WO2024027255A1 - Optical network node and optical network system - Google Patents

Optical network node and optical network system Download PDF

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Publication number
WO2024027255A1
WO2024027255A1 PCT/CN2023/093028 CN2023093028W WO2024027255A1 WO 2024027255 A1 WO2024027255 A1 WO 2024027255A1 CN 2023093028 W CN2023093028 W CN 2023093028W WO 2024027255 A1 WO2024027255 A1 WO 2024027255A1
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WIPO (PCT)
Prior art keywords
optical
optical network
optical signal
signal
wavelength
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PCT/CN2023/093028
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French (fr)
Chinese (zh)
Inventor
熊迪
张楷
吴波
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华为技术有限公司
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Publication of WO2024027255A1 publication Critical patent/WO2024027255A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems

Definitions

  • the present application relates to the field of optical communication technology, and in particular to an optical network node and an optical network system.
  • wavelength division multiplexing (WDM) optical network systems business information is usually modulated on different wavelength channels for transmission.
  • the wavelength division multiplexing optical signal of the target band such as C-band
  • each wavelength channel in the wavelength division multiplexing optical signal affects each other, if a certain wavelength of the wavelength division multiplexing optical signal
  • the power of the channel changes greatly.
  • a certain wavelength channel has a wave drop or gain.
  • SRS stimulated Raman scattering
  • This application provides an optical network node and an optical network system. This application can reduce the impact of wave addition or wave loss on the performance of the optical network system.
  • the technical solutions provided by this application are as follows:
  • this application provides an optical network node.
  • the optical network node includes a target optical amplification component and an optical splitting device.
  • the optical splitting device is coupled to the input end and the output end of the target optical amplification component respectively, so that a loop is formed between the output end and the input end of the target optical amplification component.
  • the optical splitting device is used to divide the optical signal from the output end of the target optical amplification component into multiple channels.
  • the optical signal is output and one of the optical signals is transmitted to the target optical amplification component through the loop.
  • the optical network node generates a control optical signal in the loop through the target optical amplification component, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component.
  • a loop is formed between the input end and the output end of the target optical amplification component, and the optical network node can generate a control optical signal in the loop through the target optical amplification component.
  • the control optical signal can adjust the power of the optical signal input to the target optical amplification component, and can solve the problem of residual wave signals caused by power transfer caused by the stimulated Raman scattering effect.
  • the performance fluctuation problem and the transient overshoot problem of the target optical amplification component reduce the impact of wave addition or wave loss on the performance of the optical network system.
  • the control optical signal includes: a first control optical signal and/or a second control optical signal, the wavelength of the first control optical signal is smaller than the wavelength of all service optical signals output by the target optical amplification component, and the wavelength of the second control optical signal is larger than The wavelength of all service optical signals output by the target optical amplification component.
  • the control optical signal does not occupy the wavelength channel of the service optical signal and is distributed at both ends of the wavelength of the service optical signal. It does not occupy the wavelength channel of the service optical signal and will not affect the performance of the optical network system.
  • the optical network node further includes: a lasing capability adjuster, the input end of the lasing capability adjuster is coupled to the output end of the optical splitting device , and the lasing capability adjuster is located in the loop, and the lasing capability adjuster is used to adjust the lasing capability of the control light signal.
  • the purpose of adjusting the lasing ability of the control light signal is to balance the lasing ability of the control light signal of different wavelengths, so that the molecules used to form the control light signal of different wavelengths have basically the same probability of being stimulated and emitted.
  • the pump energy can be transferred to the control optical signals of multiple wavelengths in a relatively even manner, so that the power of the control optical signals of multiple wavelengths is basically equal.
  • the first control optical signal and the second control optical signal have basically the same ability to compensate for power fluctuations caused by wave addition or wave drop, and can maintain the performance stability of the optical network system to a large extent.
  • the lasing capability adjuster is an optical amplifier.
  • the lasing capability adjuster 103 is also used to amplify the received optical signal.
  • the optical amplifier may be a semiconductor optical amplifier, or the optical amplifier may be a fiber amplifier, such as an erbium-doped fiber amplifier.
  • the optical network node also includes: an optical attenuator, the input end of the optical attenuator is coupled to the output end of the optical splitting device, and the optical attenuator is located in the loop, and the optical attenuator is used to adjust the optical power of the received optical signal. Attenuation to reduce the loss of optical signals.
  • the purpose of setting up an optical attenuator in an optical network node is to ensure that the gain of the optical signal is greater than the loss of the optical signal, so that a control optical signal can be generated in the loop.
  • the light attenuator may be a variable light attenuator.
  • the optical network node also includes: a filter device, the input end of the filter device is coupled to the output end of the optical splitter device, and the filter device is located in the loop, and the filter device is used to filter out the control light from the optical signal from the optical splitter device.
  • signal and provides a control light signal to the target light amplification component.
  • the optical signal from the optical splitting device is the optical signal output by the target optical amplification component.
  • the optical signal includes a control optical signal and a service optical signal.
  • the control optical signal is used to adjust the power of the service optical signal input to the target optical amplification component.
  • the control optical signal is an optical signal that needs to be circulated in the loop. Therefore, the control optical signal needs to be filtered out from the optical signal from the optical splitter device, and the service optical signal needs to be filtered out.
  • the filter device can be any optical device with filtering function. Moreover, the position of the filter device in the optical network node can be set according to application requirements. Let's take the following implementation methods as examples to explain them respectively:
  • the filter device can be located in the loop and in the transmission path through which the optical network node transmits optical signals with other optical network nodes. That is, the filter device is located in the part of the loop that belongs to the transmission path.
  • the filters device can have multiple input terminals, and the multiple input terminals include: output terminals with other optical network nodes The coupled input terminal, and the input terminal coupled to the output terminal of the spectroscopic device.
  • the filter device Since the input end of the filter device is also coupled with the output end of other optical network nodes, the filter device is also used to filter out the service optical signal of the specified wavelength from the optical signals from other optical network nodes and transmit it to the target optical amplification component. Provides filtered service optical signals.
  • the input end of the filter device can also be coupled with the output end of other optical devices located outside the loop and belonging to the optical network node, and the other optical devices can provide optical signals.
  • the filter device is also used to filter out the service optical signal of a specified wavelength from the optical signal from other optical devices, and provide the filtered service optical signal to the target optical amplification component.
  • the filter device can be located in the loop and outside the transmission path through which the optical network node and other optical network nodes transmit optical signals. That is, the filter device is located in a part of the loop that does not belong to the transmission path.
  • the filter device may have at least one input terminal, and the at least one input terminal includes: an input terminal coupled with the output terminal of the optical splitting device.
  • the filter device may also include an input end coupled to the output end of other optical devices.
  • the filter device is also used to filter out the service optical signal of a specified wavelength from the optical signal from other optical devices, and provide the filtered service optical signal to the target optical amplification component.
  • other optical devices are optical devices located outside the loop.
  • the optical signal output by the filter device can have multiple input terminals, and can output signals from the multiple input terminals through the output terminal.
  • the optical device may be an optical device such as a wavelength division multiplexer or a wavelength selector.
  • the optical network node may further include: a first wavelength division multiplexer.
  • the input terminal of the first wavelength division multiplexer is coupled with the output terminal of the filter device.
  • the input terminal of the first wavelength division multiplexer is also used to couple with the output terminals of other optical devices.
  • the output end of the first wavelength division multiplexer is coupled with the input end of the target optical amplification component.
  • the first wavelength division multiplexer may be located in a transmission path for transmitting optical signals between the optical network node and other optical network nodes.
  • the first wavelength division multiplexer is used to provide the control optical signal from the filter device to the target optical amplification component.
  • the first wavelength division multiplexer is also used to provide the target optical amplification component with service optical signals from other optical devices.
  • the optical network node may also include: a first wavelength selector.
  • the input terminal of the first wavelength selector is used for coupling with the output terminals of other optical network nodes.
  • the output terminal of the first wavelength selector is coupled to the input terminal of the first wavelength division multiplexer.
  • the first wavelength selector is used to filter out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provide the filtered service optical signals to the first wavelength division multiplexer.
  • the first wavelength division multiplexer is used to converge the filtered control optical signal and service optical signal to the target optical amplification component.
  • the optical network node further includes: a second wavelength selector.
  • the input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop.
  • the second wavelength selector has the function of selecting wavelengths. Therefore, the second wavelength selector can filter out the control optical signal from the optical signal from the spectroscopic device and provide the control optical signal to the target optical amplification component.
  • the input end of the second wavelength selector is also used to couple with the output end of other optical network nodes, and the second wavelength selector is also used to filter out the specified wavelength from the optical signals from other optical network nodes.
  • service optical signal and provides the filtered service optical signal to the target optical amplification component.
  • the optical network node includes: an optical amplifier, the optical amplifier includes multiple optical amplification components, and the target optical amplification component is one of the multiple optical amplification components.
  • the optical amplifier is also used to receive false optical signals.
  • the false optical signals are optical signals that do not carry service information.
  • the false optical signal can be filled in the wavelength channel where the drop occurs, so that the service optical signal after filling the false optical signal remains in a full wave state, thereby making the control optical signal
  • the power is adaptively adjusted to the power when the service optical signal is at full wave to maintain the stability of power transfer caused by the stimulated Raman scattering effect.
  • the false optical signal can be pre-filled in the wavelength channel that needs to be increased, and the service optical signal to be filled with the false optical signal is transmitted to the optical network node that needs to be increased. At this time, the false optical signal is removed and the false optical signal is added to the service optical signal to maintain the stability of power transfer caused by the stimulated Raman scattering effect.
  • the optical network node further includes: a third wavelength selector.
  • the output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier.
  • the third wavelength selector is used to receive the false optical signal and provide the false optical signal to the optical amplifier.
  • the third wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating. There are many ways to implement the third wavelength selector. The following examples are used to illustrate them:
  • the third wavelength selector may be located in the loop. At this time, the input end of the third wavelength selector is also coupled with the output end of the optical splitting device, and the third wavelength selector is also used to provide the optical amplifier with the control optical signal generated in the loop.
  • the implementation of the third wavelength selector can also be distinguished based on whether the third wavelength selector is located in a transmission path between an optical network node and other optical network nodes for transmitting optical signals.
  • the two implementations are described below:
  • the third wavelength selector is located in the loop and is located in the transmission path between the optical network node and other optical network nodes for transmitting optical signals. That is, the third wavelength selector is located in the loop and belongs to the optical network node. transmission path part. At this time, the input end of the third wavelength selector can also be coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier.
  • the third wavelength selector may be located in the loop and outside the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. That is, the third wavelength selector may be located in the loop. Parts that do not belong to the transmission path.
  • the third wavelength selector may have at least two input terminals, and the at least two input terminals include: an input terminal for receiving the false optical signal and an input terminal coupled to the output terminal of the optical splitting device.
  • the third wavelength selector may also include an input terminal coupled to the output terminals of other optical devices.
  • the third wavelength selector may be located in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, and located outside the loop.
  • the input end of the third wavelength selector is also coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier.
  • the setting position and setting method of the third wavelength selector need to ensure that the false optical signal provided by the third wavelength selector will not be filtered out by filter devices and wavelength selectors. It is necessary to ensure that the input of the third wavelength selector
  • the false optical signal can be transmitted to the optical amplifier.
  • the input end of the third wavelength selector can be coupled with the output end of the filter device.
  • the filter device filters the optical signal from the spectroscopic device, it also needs to filter out the false optical signal so that it can be directed to the target light amplification component. Provides false light signals.
  • the optical network node also includes: a second wavelength division multiplexer, the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier, the second wavelength division multiplexer is used to receive the false optical signal, and Provides a false optical signal to the optical amplifier.
  • the optical network node 10 may further include: a fourth wavelength selector.
  • the input end of the fourth wavelength selector is used to couple with the output ends of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component 101 .
  • the fourth wavelength selector is used to filter out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provide the filtered optical signals to the target optical amplification component 101 .
  • control optical signals generated by other optical network nodes enter the optical network node 10 , the control optical signals generated by the other optical network nodes will interfere with the control optical signals in the optical network node 10 , affecting the optical network node 10 . Control the power of the optical signal, thereby affecting the role of the controlled optical signal in maintaining the stability of the optical network system. Therefore, by setting the fourth wavelength selector, control optical signals from other optical network nodes can be filtered, thereby ensuring the stability of the optical network system.
  • this application provides a power adjustment method for an optical network node.
  • the method includes: an optical network node receives a service optical signal provided by other optical network nodes, a target optical amplification component amplifies and outputs the service optical signal, and an optical splitting device divides the amplified optical signal into multiple optical signals and outputs one of them.
  • the optical signal is transmitted to the target optical amplification component through the loop; the optical network node generates a control optical signal in the loop through the target optical amplification component, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component; the optical network node is based on Control the optical signal to adjust the power of the service optical signal.
  • control optical signal includes: a first control optical signal and/or a second control optical signal, the wavelength of the first control optical signal is smaller than the wavelength of all service optical signals output by the target optical amplification component, and the second control optical signal has The wavelength is greater than the wavelength of all service optical signals output by the target optical amplification component.
  • the optical network node when the control optical signal includes: a first control optical signal and a second control optical signal, the optical network node further includes: a lasing capability adjuster.
  • the input end of the lasing ability adjuster is coupled with the output end of the spectroscopic device, and the lasing ability adjuster is located in the loop.
  • the method also includes: the lasing capability adjuster receives the optical signal from the spectroscopic device, and adjusts the lasing capability of the optical signal to control the optical signal.
  • the lasing capability adjuster is an optical amplifier.
  • the optical network node also includes: an optical attenuator.
  • the input end of the optical attenuator is coupled with the output end of the optical splitting device, and the optical attenuator is located in the loop.
  • the method also includes: the optical attenuator receives the optical signal from the spectroscopic device, and attenuates the optical power of the optical signal.
  • the optical network node further includes: a filter device.
  • the input end of the filter device is coupled to the output end of the optical splitter device, and the filter device is located in the loop.
  • the method also includes: the filter device receives the optical signal from the spectroscopic device, filters the control light signal from the optical signal, and provides the filtered control light signal to the target light amplification component.
  • the optical network node further includes: a first wavelength division multiplexer.
  • the input end of the first wavelength division multiplexer is coupled to the output end of the filter device and the output end of other optical network nodes respectively, and the output end of the first wavelength division multiplexer is coupled to the input end of the target optical amplification component.
  • the method also includes: the first wavelength division multiplexer receives the control optical signal from the filter device and the optical signal from other optical network nodes, and provides the control optical signal from the filter device and the control optical signal from other optical network nodes to the target optical amplification component.
  • Optical signals from optical network nodes are used to transmit business optical signals in the optical network system.
  • the optical network node also includes: a first wavelength selector.
  • the input end of the first wavelength selector is used for coupling with the output ends of other optical network nodes, and the output end of the first wavelength selector is coupled with the input end of the first wavelength division multiplexer.
  • the method also includes: the first wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the first wavelength division multiplexer.
  • the optical network node further includes: a second wavelength selector.
  • the input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop.
  • the method further includes: the second wavelength selector filters out the control light signal from the light signal from the spectroscopic device, and provides the control light signal to the target light amplification component.
  • the input end of the second wavelength selector is coupled with the output end of other optical network nodes.
  • the method also includes: the second wavelength selector filters out the service optical signal of the specified wavelength from the optical signal from other optical network nodes, and provides the filtered service optical signal to the target optical amplification component.
  • the optical network node may include: an optical amplifier.
  • the optical amplifier includes multiple optical amplification components.
  • the target light amplification component is one of a plurality of light amplification components.
  • the method further includes: the optical amplifier receives the false optical signal, and fills the false optical signal in the designated wavelength channel.
  • Fake optical signals are optical signals that do not carry business information.
  • the optical network node further includes: a third wavelength selector.
  • the output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier.
  • the method also includes: the third wavelength selector receives the false optical signal and provides the false optical signal to the optical amplifier.
  • the input end of the third wavelength selector is also coupled to the output end of the spectroscopic device, and the third wavelength selector is located in the loop.
  • the method further includes: the third wavelength selector providing the control optical signal generated in the loop to the optical amplifier.
  • the input end of the third wavelength selector is also coupled with the output end of other optical network nodes.
  • the method also includes: the third wavelength selector provides optical signals from other optical network nodes to the optical amplifier.
  • the method further includes: the third wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the optical amplifier.
  • the optical network node further includes: a second wavelength division multiplexer, and the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier.
  • the method also includes: the second wavelength division multiplexer receives the false optical signal and provides the false optical signal to the optical amplifier.
  • the optical network node further includes: a fourth wavelength selector.
  • the input end of the fourth wavelength selector is coupled with the output end of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component.
  • the method also includes: the fourth wavelength selector filters out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provides the filtered optical signal to the target optical amplification component.
  • this application provides an optical network system.
  • the optical network system includes multiple optical network nodes.
  • the multiple optical network nodes include one or more of the first aspect and any of its possible implementations.
  • this application provides a computer device, including a memory and a processor.
  • the memory stores program instructions
  • the processor runs the program instructions to execute the method provided in the second aspect of this application and any possible implementation thereof. .
  • this application provides a computer cluster, including multiple computer devices.
  • the multiple computer devices include multiple processors and multiple memories.
  • Program instructions are stored in the multiple memories, and the multiple processors run the program instructions.
  • the computer cluster is caused to execute the method provided in the second aspect of this application and any possible implementation manner thereof.
  • the application provides a computer-readable storage medium.
  • the computer-readable storage medium is a non-volatile computer-readable storage medium.
  • the computer-readable storage medium includes program instructions. When the program instructions are stored on a computer device, When running, the computer device is caused to execute the method provided in the second aspect of the application and any possible implementation manner thereof.
  • this application provides a computer program product containing instructions.
  • the computer program product When the computer program product is run on a computer, it causes the computer to execute the method provided in the second aspect of this application and any possible implementation thereof.
  • Figure 1 is a power spectrum of an optical signal before and after the power of the optical signal is transferred under the influence of the stimulated Raman scattering effect provided by an embodiment of the present application;
  • Figure 2 is a schematic diagram of an optical network system provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of an optical network node provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of the power of the service optical signal and the control optical signal when the optical signal received by the optical network node according to the embodiment of the present application does not increase or drop;
  • Figure 5 shows the power of the service optical signal and the control optical signal when the optical signal received by an optical network node according to the embodiment of the present application drops.
  • Figure 6 is a schematic diagram of the residual wave signal power fluctuation caused by the stimulated Raman scattering effect when the service optical signal is dropped and the control optical signal is generated and the control optical signal is not generated according to the embodiment of the present application. ;
  • Figure 7 is a schematic diagram illustrating the transient effect of light amplification of the target optical amplification component when the service optical signal drops and no control optical signal is generated according to the embodiment of the present application;
  • Figure 8 is an optical amplification transient effect of a target optical amplification component when a service optical signal drops and a control optical signal is generated according to an embodiment of the present application;
  • Figure 9 is a schematic diagram of an optical network node including a lasing capability adjuster provided by an embodiment of the present application.
  • Figure 10 is a schematic diagram of an optical network node including an optical attenuator provided by an embodiment of the present application.
  • Figure 11 is a schematic diagram of an optical network node including a filter device provided by an embodiment of the present application.
  • Figure 12 is a schematic diagram of another optical network node including a filter device provided by an embodiment of the present application.
  • Figure 13 is a schematic diagram of an optical network node including a first wavelength division multiplexer provided by an embodiment of the present application
  • Figure 14 is a schematic diagram of realizing the function of the first wavelength selector through a second wavelength selective switch according to an embodiment of the present application
  • Figure 15 is a schematic diagram of a method of realizing the function of a first wavelength division multiplexer through a second wavelength selective switch according to an embodiment of the present application
  • Figure 16 is a schematic diagram of realizing the function of a second wavelength selector through a second wavelength selective switch according to an embodiment of the present application
  • Figure 17 shows a situation where the service optical signal received by the optical network node drops out according to the embodiment of the present application. After the wavelength channel where the dropout occurs is filled with false optical signals, the service optical signal, the false optical signal and the control optical signal Schematic diagram of the signal;
  • FIG. 18 is a schematic diagram of realizing the function of a third wavelength selector through a second wavelength selective switch according to an embodiment of the present application.
  • FIG. 19 is a schematic diagram of realizing the function of a third wavelength selector through a first wavelength selective switch according to an embodiment of the present application.
  • Figure 20 is a schematic diagram of realizing the function of the second wavelength division multiplexer through the first wavelength division multiplexer provided by the embodiment of the present application;
  • Figure 21 is a schematic diagram of an optical network node that does not include a first wavelength selective switch and a second wavelength selective switch provided by an embodiment of the present application;
  • Figure 22 is a flow chart of a power adjustment method for an optical network node provided by an embodiment of the present application.
  • Figure 23 is a flow chart of a method for realizing power adjustment of an optical network node through the optical network node shown in Figure 18 provided by an embodiment of the present application;
  • Figure 24 is a flow chart of a method for realizing power adjustment of an optical network node through the optical network node shown in Figure 20 provided by an embodiment of the present application;
  • Figure 25 is a schematic diagram of another optical network system provided by an embodiment of the present application.
  • Figure 26 is a schematic structural diagram of a computer device provided by an embodiment of the present application.
  • the Stimulated Raman Scattering (SRS) effect shows that the power of optical signals transmitted by short-wavelength channels will transfer to optical signals transmitted by long-wavelength channels.
  • the magnitude of the power transfer of the optical signal is related to the channel position and the number of channels in the same optical fiber. For example, when the optical spectrum expands from the C-band to the C+L band, the power transfer caused by the stimulated Raman scattering effect will increase by approximately 4 times.
  • C-band and C+L-band are different transmission frequency bands.
  • Figure 1 shows the power spectrum of the optical signal before and after the power of the optical signal is transferred under the influence of stimulated Raman scattering effect.
  • the vertical axis of the coordinate axis represents the power of the optical signal
  • the horizontal axis of the coordinate axis represents the wavelength of the optical signal
  • the curve with an arrow represents the power transfer direction, and for the convenience of viewing, all power transfers are not shown in Figure 1 direction.
  • the power of the seven wavelength optical signals is the same.
  • the power of the smaller wavelength optical signal becomes smaller, and the power of the larger wavelength optical signal becomes larger.
  • the slope of the power spectrum of the seven-wavelength optical signal changes from 0 to a positive number, that is, the power spectrum becomes tilted.
  • FIG. 2 is a schematic diagram of an optical network system provided by an embodiment of the present application.
  • an optical network system usually includes multiple optical network nodes, and optical signals can be transmitted between two adjacent optical network nodes through communication optical fibers.
  • the optical network node may be a reconfigurable optical add-drop multiplexer (ROADM) site.
  • the optical network node may include a first wavelength selective switch (wavelength selective switch, WSS), a second wavelength selective switch and an optical amplifier. Both the first wavelength selective switch and the second wavelength selective switch can be coupled to multiple optical network nodes, and both the first wavelength selective switch and the second wavelength selective switch are used to select the wavelength of the received optical signal.
  • WSS wavelength selective switch
  • WSS wavelength selective switch
  • Both the first wavelength selective switch and the second wavelength selective switch can be coupled to multiple optical network nodes, and both the first wavelength selective switch and the second wavelength selective switch are used to select the wavelength of the received optical signal.
  • the long selective switch is close to other optical network nodes that transmit optical signals to the optical network node to which the first wavelength selective switch belongs.
  • the first wavelength selective switch can be regarded as the receiving optical device of the other optical network nodes, so the first wavelength Selective switches are also often called receiving end wavelength selective switches.
  • the second wavelength selective switch is also commonly referred to as the transmitting wavelength selective switch.
  • an optical amplifier (not shown in Figure 2) can also be provided between two adjacent optical network nodes to amplify the optical signal. So that the optical signal transmitted to the destination can meet the usage requirements.
  • both the first wavelength selective switch and the second wavelength selective switch may have multiple input terminals, and the arrows pointing to the first wavelength selective switch and the second wavelength selective switch in FIG. 2 are used to indicate the input terminals.
  • wavelength division multiplexing optical network system business information is usually modulated and transmitted on different channels, and the optical signals transmitted on different channels have different wavelengths.
  • the target band such as C-band
  • the target band such as C-band
  • Large power changes such as a wave drop or gain in a certain channel, will cause the optical transmission performance of the remaining channels in the optical signal to deteriorate under the influence of the optical amplifier of the optical network system and the stimulated Raman scattering effect of the optical fiber. , leading to unstable performance of the optical network system and affecting the performance of the optical network system.
  • Wave increase means: the number of channels included in the optical signal transmitted by the current optical network node is increased compared to the number of channels included in the optical signal transmitted by the adjacent optical network node located in front of the optical network node.
  • wave dropping means that the number of channels included in the optical signal transmitted by the current optical network node is reduced compared to the number of channels included in the optical signal transmitted by the adjacent optical network node located in front of the optical network node.
  • the power transferred by the short-wavelength optical signal received by the long-wavelength optical signal will be reduced, causing the long-wavelength optical signal to The power of the signal decreases relative to the power when no wave drop occurs, and the power of the short-wavelength optical signal increases relative to the power when no wave drop occurs, causing the power of the remaining wave signal to fluctuate.
  • the long-wavelength optical signal in the service optical signal drops or the service optical signal increases, the power of the remaining wave signal will fluctuate.
  • the magnitude of the power transfer of the optical signal is related to the channel position and the number of channels in the same optical fiber. Therefore, when a wave drops or increases in an optical network system, the magnitude of the power transfer caused by the stimulated Raman scattering effect will change, resulting in a change in the power of the residual wave signal transmitted by the remaining channels.
  • Optical amplifiers include pump lasers. During the operation of the optical amplifier, the optical amplifier will detect the input power and output power of the optical amplifier, calculate the actual gain value of the optical amplifier based on the input power and output power, and determine whether the actual gain value meets the set value.
  • the spectrum of optical network systems switches between bands.
  • the spectrum of optical network systems is expanded from C-band to C+L band, and automatic switching optical networks are deployed in optical network systems.
  • ASON automated switched optical network
  • reconfigurable optical add-drop multiplexer sites, etc. will cause wave addition and wave loss in the optical network system. Therefore, eliminating the performance fluctuation of the optical network system caused by wave addition or wave loss of the optical network system is a major problem currently faced.
  • the optical network node 10 includes a target optical amplification component 101 and an optical splitting device 102 .
  • the spectroscopic device 102 may be a spectroscope, a coupler, or other optical device capable of splitting light, which is not specifically limited in the embodiment of the present application.
  • the optical network node 10 includes: an optical amplifier.
  • the optical amplifier includes multiple optical amplification components, and the target optical amplification component 101 is one of the multiple optical amplification components.
  • the optical amplifier includes a plurality of optical amplification components coupled in sequence.
  • the target optical amplification component 101 can be the first or the last one of the multiple optical amplification components, or any one between the first and the last one. one.
  • the spectroscopic device 102 is coupled to the input end and the output end of the target light amplification component 101 respectively, so that a loop is formed between the output end and the input end of the target light amplification component 101 . That is, the loop includes a path passing from the output end of the target light amplification component 101 to the input end of the target light amplification component 101 .
  • the optical splitting device 102 is used to divide the optical signal from the output end of the target optical amplification component 101 into multiple optical signals and output them, wherein one optical signal is transmitted to the target optical amplification component 101 through a loop.
  • the other optical signals in the multi-channel optical signals can be determined according to the application scenario of the optical network node 10.
  • the other optical signals are the optical signals in the multi-channel optical signals except the optical signals transmitted to the target optical amplification component 101 through the loop.
  • the other optical signals may include optical signals provided to the next optical network node 10 of the optical network node 10 .
  • a ring cavity is formed in the optical network node 10.
  • the ring cavity can be excited to generate optical signals, so that the optical network node 10 can spontaneously generate optical signals under the action of the ring cavity.
  • the generated optical signal is the control optical signal. That is, the optical network node 10 can generate a control optical signal in the loop through the target optical amplification component 101 .
  • the power of the control optical signal can be determined based on the power of the service optical signal received by the target optical amplification component 101.
  • the pump laser in the target optical amplification component 101 can output pump laser energy, and the control optical signal and the service optical signal received by the target optical amplification component 101 share the pump energy.
  • the optical signal received by the optical network node 10 does not increase or drop, the state in which the control optical signal and the service optical signal share pump energy is in a stable state.
  • the optical signal received by the optical network node 10 drops, the power of the service optical signal received by the target optical amplification component 101 is reduced.
  • the pump energy consumed by the service optical signal is reduced, and the excess pump energy can be transferred to the control light signal, causing the power of the control light signal to increase.
  • the wavelength of the service optical signal occupies the channel, and the power of the control optical signal and the power of the service optical signal of each wavelength are Basically equal.
  • the number of channels included in the optical signal of the optical network node is reduced compared to the number of channels shown in Figure 4, that is, the optical signal received by the optical network node 10 has dropped.
  • the control The power of the optical signal is greater than the power of the service optical signal in the remaining channels.
  • the ordinate in Figures 4 and 5 represents the power of the optical signal, and the abscissa represents the wavelength of the optical signal.
  • the power of the control optical signal may be determined based on the power of the service optical signal received by the target optical amplification component 101 .
  • the transfer of pump energy to optical signals refers to the energy conversion of pump light energy through effects such as energy level transitions.
  • the short-wavelength service optical signal When the service optical signal drops, if a control optical signal is generated in the optical network node 10, under the influence of the stimulated Raman scattering effect, the short-wavelength service optical signal will transfer power to the long-wavelength service optical signal. Power can also be transferred to a control optical signal with a longer wavelength than the short-wavelength service optical signal. Similarly, the long-wavelength service optical signal can also receive the transferred power of a control optical signal with a shorter wavelength than the long-wavelength service optical signal. .
  • the power of the long-wavelength service optical signal is reduced compared to the power decrease when no wave drop occurs, and the power of the short-wavelength service optical signal is also reduced relative to the power increase when no wave drop occurs, reaching In order to reduce or even eliminate the effect of fluctuations in residual wave signal power, it helps to maintain the stability of the performance of the optical network system.
  • the service optical signal increases, by controlling the optical signal Similar effects can also be achieved, which will not be described again here.
  • Figure 6 is a schematic diagram of the residual wave signal power fluctuation caused by the stimulated Raman scattering effect when the service optical signal is dropped and the control optical signal is generated and the control optical signal is not generated.
  • the thick solid line in Figure 6 represents the power fluctuation of the residual wave signal caused by the stimulated Raman scattering effect when a control light signal is generated.
  • the thick dotted line in Figure 6 represents the power fluctuation of the residual wave signal caused by the stimulated Raman scattering effect when no control light signal is generated.
  • the target optical amplification component 101 can convert the pump light energy into the energy of the service optical signal and the control optical signal through energy level transition and other effects. , causing the energy of the control light signal to increase.
  • the increase in the energy of the control optical signal makes up for the energy decrease of the service optical signal due to wave drop, so that the sum of the power of the control optical signal and the power of the service optical signal after the wave drop is compared with the power of the service optical signal after the wave drop. is closer to or equal to the power of the service optical signal before wave-dropping.
  • FIG. 7 is a schematic diagram of the transient effect of the optical amplification of the target optical amplification component 101 when the service optical signal drops and no control optical signal is generated.
  • Figure 8 shows the optical amplifier transient effect of the target optical amplification component 101 when the service optical signal drops and a control optical signal is generated.
  • the spikes appearing in Figures 7 and 8 represent transient overshoot of the optical amplifier. It can be seen from the comparison between FIG. 7 and FIG. 8 that by controlling the adaptive adjustment of the optical signal, the optical amplifier transient overshoot of the target optical amplification component 101 is greatly reduced.
  • the optical network node 10 can generate a control optical signal in the loop through the target optical amplification component 101, and increased waves appear at the optical network node 10.
  • the control optical signal can adjust the power of the optical signal input to the target optical amplification component 101, and can solve the problem of residual wave signal power fluctuation caused by power transfer caused by the stimulated Raman scattering effect, and
  • the transient overshoot problem of the target optical amplification component 101 reduces the impact of wave addition or wave drop on the performance of the optical network system.
  • the target optical amplification component 101 can generate a control optical signal based on the loop, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component 101 , the energy of the control optical signal comes from the pump energy released by the target optical amplification component 101, so that the control optical signal does not need to be injected from the outside, and the process of generating the control optical signal does not need to be executed according to whether the optical network node 10 has a wave increase or a wave drop. And this process does not need to be controlled by other devices and software. Therefore, the power adjustment process of controlling the optical signal can be regarded as an adaptive process. This adaptive process can realize rapid adjustment of power, can be applicable to various wave addition and wave drop scenarios, and can save the time of controlling the optical signal. cost and reduce the size of the optical network node 10.
  • one or more loops may be formed between the output end and the input end of the target optical amplification component 101, and the optical network node 10 may connect to each of the one or more loops through the target optical amplification component 101.
  • Generate control light signals for the implementation of the optical network node 10 generating the control optical signal in each loop through the target optical amplification component 101, reference can be made to the relevant descriptions in the embodiments of the present application, which will not be described again here.
  • the generated control light signal may be a control light signal including multiple wavelengths.
  • the control light signal includes: a first control light signal and/or a second control light signal.
  • the wavelength of the first control optical signal is smaller than the wavelength of all service optical signals output by the target optical amplification component 101 .
  • the wavelength of the second control optical signal is greater than the wavelength of all service optical signals output by the target optical amplification component 101 .
  • the control optical signal does not occupy the wavelength channel of the service optical signal and is distributed at both ends of the wavelength of the service optical signal. It does not occupy the wavelength channel of the service optical signal and will not affect the performance of the optical network system.
  • the wavelengths of the first control optical signal and the second control optical signal can be set according to application requirements. For example, by Since the energy of the control optical signal comes from the pump energy released by the target optical amplification component 101, the closer the wavelength of the control optical signal is to the wavelength of the service optical signal, the better the adaptive adjustment effect of the power of the control optical signal will be, reducing wave increase. Or the greater the ability of wave drop to affect the performance of the optical network system, therefore, you can set the wavelength of the first control optical signal to be slightly smaller than the wavelength of all service optical signals, and set the wavelength of the second control optical signal to be slightly larger than the wavelength of all service optical signals. wavelength.
  • channels C(1)-C(120) can be used to transmit the service optical signals
  • channel C(0) can be used to transmit the first control optical signal.
  • the second control optical signal is transmitted using channel C (121), where channel C (i+1) and channel C (i-1) are both adjacent channels of channel C (i).
  • control optical signal can also have other wavelengths.
  • the wavelength of the control optical signal may be smaller than the maximum wavelength of the service optical signal, and/or be larger than the minimum wavelength of the service optical signal.
  • the generated control optical signals may also include control optical signals with multiple wavelengths greater than the wavelengths of all service optical signals, and may also include control optical signals with multiple wavelengths smaller than the wavelengths of all service optical signals. This application implements The example does not specifically limit it.
  • the optical network node 10 further includes: a laser; Shooting capacity adjuster 103.
  • the input end of the lasing power adjuster 103 is coupled to the output end of the spectroscopic device 102, and the lasing power adjuster 103 is located in the loop.
  • the lasing capability adjuster 103 may be located in the loop and outside the transmission path through which the optical network node 10 and other optical network nodes transmit optical signals. That is, the lasing capability adjuster 103 located in the loop does not belong to the transmission path. part of the transmission path.
  • Optical network nodes and other optical network nodes are used to transmit business optical signals in the optical network system. That is, the optical network nodes in the optical network system except the optical network nodes are all other optical network nodes. In this way, since the lasing capability adjuster 103 is not disposed in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, interference to business signals can be reduced and the performance of the optical network system can be ensured.
  • the lasing capability adjuster 103 is used to adjust the lasing capability of the control light signal.
  • the lasing ability of controlled optical signals refers to the ability of the molecular beam used to form the controlled optical signals to be excited by the radiation field and jump to the next energy level, where stimulated emission occurs to generate the controlled optical signals.
  • the radiation field excitation mainly refers to the excitation from the pump light energy in the target optical amplification component 101.
  • the purpose of adjusting the lasing ability of the control light signal is to balance the lasing ability of the control light signal of different wavelengths, so that the molecules used to form the control light signal of different wavelengths have basically the same probability of being stimulated and emitted.
  • the pump energy can be transferred to the control optical signals of multiple wavelengths in a relatively even manner, so that the power of the control optical signals of multiple wavelengths is basically equal.
  • the control light signal includes a first control light signal and a second control light signal
  • the lasing capabilities of the first control light signal and the second control light signal are adjusted by the lasing capability adjuster 103, so that the first The power of the control light signal and the second control light signal can be substantially equal.
  • the first control optical signal and the second control optical signal have basically the same ability to compensate for power fluctuations caused by wave addition or wave drop, and can maintain the performance stability of the optical network system to a large extent.
  • the adjustment function may also include increasing or decreasing the lasing capability of the control optical signal on the basis of balancing the lasing capabilities of the control signals of different wavelengths.
  • the control optical signal includes a first control optical signal and a second control optical signal
  • the lasing capability adjuster 103 is not only used to balance the first control optical signal and the second control optical signal.
  • the lasing ability is also used to increase the lasing ability of the first control optical signal and the second control optical signal, so that the excess pump light energy due to wave drop can be directed to the first control optical signal and the second control optical signal as much as possible.
  • Optical signal transfer is also used to increase the lasing ability of the first control optical signal and the second control optical signal transfer.
  • the lasing capability adjuster 103 is not only used to balance the lasing capabilities of the first control optical signal and the second control optical signal, but is also used to reduce the first control optical signal and the second control optical signal.
  • the lasing capability enables the pump light energy to be transferred to increased business optical signals.
  • the lasing capability adjuster 103 may be an optical amplifier. At this time, the lasing capability adjuster 103 is also used to amplify the received optical signal.
  • the embodiment of this application does not limit the type of the optical amplifier, as long as The optical amplifier can adjust and control the lasing ability of the optical signal, and can amplify the signal.
  • the optical amplifier may be a semiconductor optical amplifier (semiconductor optic amplifier, SOA), or the optical amplifier may be a fiber amplifier, such as an erbium-doped optical fiber amplifier (EDFA).
  • the lasing capability adjuster 103 may be other devices capable of adjusting lasing capability.
  • the lasing capability adjuster 103 may also be a passive device such as a saturable absorber.
  • the optical network node 10 may also include: an optical attenuator 104.
  • the input end of the optical attenuator 104 is coupled with the output end of the optical splitting device 102, and the optical attenuator 104 is located in the loop.
  • the optical attenuator 104 is used to attenuate the optical power of the received optical signal to reduce the loss of the optical signal.
  • the purpose of arranging the optical attenuator 104 in the optical network node 10 is to ensure that the gain of the optical signal can be greater than the loss of the optical signal, so that a control optical signal can be generated in the loop.
  • the optical attenuator 104 may be a variable optical attenuator (VOA).
  • VOA variable optical attenuator
  • the optical attenuator 104 may be located in the loop and outside the transmission path through which the optical network node 10 and other optical network nodes transmit optical signals. That is, the optical attenuator 104 is located in a part of the loop that does not belong to the transmission path. . In this way, since the optical attenuator 104 is not disposed in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, interference to business signals can be reduced and the performance of the optical network system can be ensured.
  • the input end of the lasing capability adjuster 103 can pass through the optical attenuator 104 and the spectroscopic device 102. Output coupling.
  • the optical signal from the optical splitter in the loop is the optical signal output by the target optical amplification component 101, and the optical signal includes a control optical signal and a service optical signal.
  • the control optical signal is used to adjust the power of the service optical signal input to the target optical amplification component 101, and the control optical signal needs to circulate in the loop.
  • the service optical signal passes through the loop and then enters the target optical amplification component 101, the performance of the optical network system will be affected. Therefore, it is necessary to filter out the control optical signal and the service optical signal from the optical signal from the optical splitting device in the loop, and provide the control optical signal to the target optical amplification component 101 .
  • the optical network node 10 may also include: a filter device.
  • the input end of the filter device is coupled to the output end of the spectroscopic device 102, and the filter device is located in the loop.
  • the filter device is used to filter out the control light signal from the light signal from the spectroscopic device and provide the control light signal to the target light amplification component 101 .
  • the filter device can be any optical device with filtering function.
  • the filter device 105 may be a filter such as a bandpass filter, or may be a wavelength selector.
  • the wavelength selector can be an optical device such as a wavelength selective switch or an arrayed waveguide grating (AWG).
  • the position of the filter device in the optical network node 10 can be set according to application requirements. Let's take the following implementation methods as examples to explain them respectively:
  • the filter device 105 can be located in the loop and in the transmission path between the optical network node 10 and other optical network nodes to transmit optical signals. That is, the filter device 105 located in the loop belongs to the part of the transmission path.
  • the filter device 105 since the signals input to the filter device 105 include optical signals from other optical network nodes and optical signals from the optical splitting device, the filter device 105 may have multiple input terminals, and the multiple input terminals include: an input terminal coupled to the output terminal, and an input terminal coupled to the output terminal of the spectroscopic device 102 .
  • the filter device 105 Since the input end of the filter device 105 is also coupled with the output end of other optical network nodes, the filter device 105 is also used to filter out the service optical signal of the specified wavelength from the optical signals from other optical network nodes, and transmit it to the target optical signal.
  • Amplification component 101 provides filtered traffic light signals.
  • the input end of the filter device 105 can also be coupled with the output end of other optical devices located outside the loop, and the other optical devices can provide optical signals.
  • the filter device 105 is also used to filter out the service optical signal of a specified wavelength from the optical signals from other optical devices, and provide the filtered service optical signal to the target optical amplification component 101.
  • the service optical signal of the specified wavelength is the optical signal required by the optical network system to realize the service.
  • the optical signal of the optical device may include one or more of the following: optical signals generated by other optical devices, and optical signals received by other optical devices.
  • the other optical device may be an optical device in the optical network node 10 (such as an optical network unit (ONU)).
  • the optical signals from other optical devices are the optical signals generated by the ONU.
  • the other optical devices may be other optical network nodes.
  • the optical signals from other optical devices are optical signals received by other optical network nodes, and when other optical network nodes include optical devices capable of generating optical signals, the optical signals from other optical devices also include those generated by the optical device. light signal.
  • other optical network nodes and other optical devices located outside the loop and belonging to the optical network node 10 can be collectively referred to as other optical devices located outside the loop.
  • the filter device 105 can be located in the loop and outside the transmission path of the optical signal transmitted between the optical network node 10 and other optical network nodes. That is, the filter device 105 is located in the loop and does not belong to the loop. part of the transmission path.
  • the filter device 105 may have at least one input terminal, and the at least one input terminal includes: an input terminal coupled with the output terminal of the spectroscopic device 102 .
  • the filter device 105 may also include an input terminal coupled to the output terminals of other optical devices.
  • the filter device 105 When the filter device 105 is also coupled with the output end of other optical devices, the filter device 105 is also used to filter out the service optical signal of the specified wavelength from the optical signals from other optical devices, and provide the filtered out signal to the target optical amplification component 101.
  • business light signal may be optical devices located outside the loop.
  • other optical devices include other optical network nodes or optical devices (such as ONUs) in the optical network node 10 .
  • the optical signal output by the filter device 105 can have multiple input terminals, and can be output from the multiple input terminals through the output terminal.
  • the optical signal at the end is realized by optical devices.
  • the optical device may be an optical device such as a wavelength division multiplexer or a wavelength selector.
  • the optical network node 10 may further include: a first wavelength division multiplexer 106.
  • the input terminal of the first wavelength division multiplexer 106 is coupled with the output terminal of the filter device 105 .
  • the input terminal of the first wavelength division multiplexer 106 is also used to couple with the output terminals of other optical devices.
  • the output end of the first wavelength division multiplexer 106 is coupled with the input end of the target optical amplification component 101 .
  • the first wavelength division multiplexer 106 may be located in a transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals.
  • the first wavelength division multiplexer 106 When the input end of the first wavelength division multiplexer 106 is coupled to the output end of the filter device 105, the first wavelength division multiplexer 106 is used to provide the control optical signal from the filter device 105 to the target optical amplification component 101. When the input end of the first wavelength division multiplexer 106 is also coupled with the output end of other optical devices, the first wavelength division multiplexer 106 is also used to provide the target optical amplification component 101 with service optical signals from other optical devices.
  • other optical devices are optical devices located outside the loop. For example, other optical devices may be other optical network nodes or optical devices in the current optical network node 10 (such as ONU).
  • the optical network node may also include: a first wavelength selector.
  • the input terminal of the first wavelength selector is used for coupling with the output terminals of other optical network nodes.
  • the output terminal of the first wavelength selector is coupled to the input terminal of the first wavelength division multiplexer.
  • the first wavelength selector is used to filter out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provide the filtered service optical signals to the first wavelength division multiplexer.
  • the first wavelength division multiplexer is used to converge the filtered control optical signal and service optical signal to the target optical amplification component 101 .
  • the function of the first wavelength selector can be implemented by the first wavelength selective switch or the second wavelength selective switch in FIG. 2 .
  • FIG. 14 is a schematic diagram of realizing the function of the first wavelength selector through the second wavelength selective switch.
  • the function of the first wavelength division multiplexer 106 can also be implemented through other optical devices. This can be achieved, for example, with a wavelength selector.
  • the input terminal of the wavelength selector is coupled with the output terminal of the filter device 105 .
  • the input end of the wavelength selector is also used to couple with the output end of other optical devices.
  • the output end of the wavelength selector is coupled with the input end of the target light amplifying component 101 .
  • the wavelength selector may be located in a transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals.
  • the wavelength selector is also used to filter out the service optical signal of a specified wavelength from the optical signal from other optical devices, and provide the filtered service optical signal to the target optical amplification component 101.
  • other optical devices are optical devices located outside the loop.
  • other optical devices may be other optical network nodes or optical devices in the current optical network node 10 (such as ONU).
  • the wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating.
  • the function of the wavelength selector can be realized by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 .
  • the optical network node 10 includes a first wavelength selective switch and a second wavelength selective switch.
  • the function of the wavelength selector can be implemented by the first wavelength selective switch or the second wavelength selective switch.
  • 15 is a schematic diagram of realizing the function of the first wavelength division multiplexer through the second wavelength selective switch, and realizing the function of the first wavelength selector through the first wavelength selective switch.
  • the input end of the optical attenuator 104 can pass through the filter device 105 and the spectroscopic device 102
  • the output terminal is coupled, and the input terminal of the lasing capability adjuster 103 can be coupled with the output terminal of the filter device 105 through the optical attenuator 104 .
  • the optical network node further includes: a second wavelength selector.
  • the input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop.
  • the second wavelength selector has the function of selecting wavelengths. Therefore, the second wavelength selector can filter out the control optical signal from the optical signal from the spectroscopic device and provide the control optical signal to the target optical amplification component.
  • the input end of the second wavelength selector is also used to couple with the output end of other optical network nodes, and the second wavelength selector is also used to filter out the specified wavelength from the optical signals from other optical network nodes.
  • service optical signal and provides the filtered service optical signal to the target optical amplification component.
  • the function of the second wavelength selector can be implemented by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 .
  • the optical network node 10 includes a first wavelength selective switch and a second wavelength selective switch.
  • the function of the second wavelength selector can be implemented by the first wavelength selective switch or the second wavelength selective switch.
  • FIG. 16 is a schematic diagram of realizing the function of the second wavelength selector through the second wavelength selective switch.
  • the optical amplifier is also used to receive false optical signals.
  • Fake optical signals are optical signals that do not carry business information.
  • the false optical signal can be filled in the wavelength channel where the drop occurs, so that the service optical signal after filling the false optical signal remains in a full wave state, thereby making the control optical signal
  • the power is adaptively adjusted to the power when the service optical signal is at full wave to maintain the stability of power transfer caused by the stimulated Raman scattering effect.
  • the false optical signal can be pre-filled in the wavelength channel that needs to be increased, and the service optical signal to be filled with the false optical signal is transmitted to the optical network node that needs to be increased. At 10 hours, false optical signals are removed to maintain the stability of power transfer caused by stimulated Raman scattering effects.
  • Figure 4 is a schematic diagram of the service optical signal and the control optical signal when the service optical signal received by the optical network node 10 is full wave. It can be seen from Figure 4 that the power of the control optical signal and the service optical signal are basically the same.
  • Figure 5 is a schematic diagram of the service optical signal and the control optical signal when the service optical signal received by the optical network node 10 drops. According to Figure 5, it can be seen that when the service optical signal drops, the power of the control optical signal is adaptively adjusted, and the power of the adjusted control optical signal is greater than the power of the service optical signal.
  • Figure 17 is a schematic diagram of the service optical signal, the fake optical signal and the control optical signal after the wavelength channel where the wave drop occurs is filled with false optical signals when the service optical signal received by the optical network node 10 drops. It can be seen from Figure 17 that compared with Figure 5, the power of the control optical signal has been adaptively adjusted based on the power shown in Figure 5. The adjusted power of the control optical signal and the service optical signal are basically the same.
  • the optical network node 10 further includes: a third wavelength selector.
  • the output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier.
  • the third wavelength selector is used to receive the false optical signal and provide the false optical signal to the optical amplifier.
  • the third wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating. There are many ways to implement the third wavelength selector. The following examples are used to illustrate them:
  • the third wavelength selector may be located in the loop. At this time, the input end of the third wavelength selector is also coupled with the output end of the spectroscopic device 102, and the third wavelength selector is also used to provide the optical amplifier with the control optical signal generated in the loop.
  • the implementation of the third wavelength selector can also be distinguished based on whether the third wavelength selector is located in the transmission path between the optical network node 10 and other optical network nodes transmitting optical signals.
  • the two implementations are described below:
  • the third wavelength selector is located in the loop and is located in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. That is, the third wavelength selector is located in the loop and belongs to part of the transmission path.
  • the input end of the third wavelength selector can also be coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier.
  • the third wavelength selector is also used to filter out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provide the filtered service optical signals to the optical amplifier.
  • the optical signals received by the third wavelength selector include: false optical signals, optical signals from the optical splitting device, and optical signals from other optical network nodes. Therefore, the third wavelength selector may be an optical device having a plurality of input terminals and at least one output terminal.
  • the plurality of input terminals include: an input terminal for receiving the false optical signal, and an input terminal coupled with the output terminals of other optical network nodes. terminal, and an input terminal coupled to the output terminal of the spectroscopic device 102.
  • the third wavelength selector may further include an input terminal coupled to the output terminals of other optical devices.
  • Other optical devices are optical devices located outside the loop in the optical network node 10 (such as ONU).
  • the function of the third wavelength selector can be implemented by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 .
  • the optical device used to realize the functions of the first wavelength selector and the third wavelength selector may be the same optical device, or the optical device used to realize the functions of the second wavelength selector and the third wavelength selector may be The same optical device.
  • the third wavelength selector may be an additional optical device added in a transmission path for transmitting optical signals between the optical network node 10 and other optical network nodes.
  • the third wavelength selector may be an additional optical device added after the second wavelength selective switch in FIG. 2 .
  • the optical network node 10 includes a first wavelength selective switch and a second wavelength selective switch.
  • the function of the third wavelength selector can be implemented through the first wavelength selective switch or the second wavelength selective switch.
  • FIG. 18 it is a schematic diagram of realizing the function of the third wavelength selector through the second wavelength selective switch.
  • the second wavelength selective switch in Figure 18 is also used to implement the function of the second wavelength selector.
  • Figure 19 it is a schematic diagram of realizing the function of the third wavelength selector through the first wavelength selective switch.
  • the third wavelength selector may be located in the loop and outside the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. That is, the third wavelength selector may be located in the loop. Parts that do not belong to the transmission path.
  • the third wavelength selector may have at least two input terminals, and the at least two input terminals include: an input terminal for receiving the false optical signal and an input terminal coupled to the output terminal of the optical splitting device.
  • the third wavelength selector may also include an input terminal coupled to the output terminals of other optical devices.
  • the third wavelength selector may also include inputs coupled to outputs of other optical network nodes.
  • the third wavelength selector is also used to provide the optical amplifier with the Optical signals from other optical network nodes.
  • the third wavelength selector may be located in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, and located outside the loop.
  • the input end of the third wavelength selector is also coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier.
  • the third wavelength selector may be an optical device having a plurality of input terminals and at least one output terminal.
  • the plurality of input terminals include: an input terminal for receiving the false optical signal, and an output terminal for communicating with other optical network nodes. Coupled input.
  • the third wavelength selector may also include an input terminal coupled to the output terminals of other optical devices in the optical network node 10 .
  • Other optical devices are optical devices located outside the loop in the optical network node 10 (such as ONU).
  • the function of the third wavelength selector can be realized by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 .
  • the first wavelength selective switch can also be used to implement the function of the third wavelength selector.
  • the third wavelength selector may be an additional optical device added in a transmission path for transmitting optical signals between the optical network node 10 and other optical network nodes.
  • the setting position and setting method of the third wavelength selector need to ensure that the false optical signal provided by the third wavelength selector will not be filtered out by filter devices and wavelength selectors. It is necessary to ensure that the input of the third wavelength selector
  • the false optical signal can be transmitted to the optical amplifier.
  • the input end of the third wavelength selector can be coupled with the output end of the filter device.
  • the filter device filters the optical signal from the spectroscopic device, it also needs to filter out the false optical signal so that it can be directed to the target light amplification component. 101 provides a false light signal.
  • the optical network node also includes: a second wavelength division multiplexer, the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier, the second wavelength division multiplexer is used to receive the false optical signal, and Provides a false optical signal to the optical amplifier.
  • the implementation of the second wavelength division multiplexer may refer to the implementation of the first wavelength division multiplexer.
  • the function of the second wavelength division multiplexer can also be realized by the first wavelength division multiplexer.
  • the optical network node 10 may also include: a light source.
  • the light source is used to generate a fake optical signal of a specified wavelength and/or a specified power, and provide the fake optical signal to the third wavelength selector or the second wavelength division multiplexer.
  • the optical network node 10 may also include: a control component used to determine the wavelength and/or power of the false optical signal required by the optical amplifier, and control the light source to generate false light of the wavelength and/or power. Signal.
  • the optical network node 10 may also include: a detection component, the detection component is used to detect the channel that does not transmit the service optical signal, and notifies the control component of the wavelength of the channel, and/or is used to detect the optical amplifier.
  • the required false light signal is used to facilitate the control component to determine the false light signal required by the optical amplifier.
  • a false optical signal may also be input between the output end of the optical amplifier and other optical devices in the optical network node 10, which is not specifically limited in the embodiment of the present application.
  • the optical network node 10 may further include: a fourth wavelength selector.
  • the input end of the fourth wavelength selector is used to couple with the output ends of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component 101 .
  • the fourth wavelength selector is used to filter out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provide the filtered optical signals to the target optical amplification component 101 .
  • control optical signals generated by other optical network nodes enter the optical network node 10 , the control optical signals generated by the other optical network nodes will interfere with the control optical signals in the optical network node 10 , affecting the optical network node 10 . Control the power of the optical signal, thereby affecting the role of the controlled optical signal in maintaining the stability of the optical network system. Therefore, by setting the fourth wavelength selector, control optical signals from other optical network nodes can be filtered, thereby ensuring the stability of the optical network system.
  • the function of the fourth wavelength selector can be achieved by not connecting the input end of the target light amplification component 101 When a loop is formed between the optical network node 10 and the output end, the original optical device in the optical network node 10 is implemented.
  • the first wavelength selective switch in FIG. 2 can be used to implement the function of the fourth wavelength selector.
  • the fourth wavelength selector may be an additional optical device added in a transmission path for transmitting optical signals between the optical network node 10 and other optical network nodes.
  • the fourth wavelength selector may be an optical device added after the second wavelength selective switch.
  • the optical network node 10 is also called an optical amplifier.
  • the optical network node 10 when the optical network node 10 does not include the first wavelength selective switch and the second wavelength selective switch, its schematic diagram is as shown in Figure 21, and the optical network node 10 is also called an optical amplifier.
  • the fourth wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating. It should be noted that the optical network node 10 may not include the fourth wavelength selector. In this case, other devices with filtering functions may be used to filter out the control light from other optical network nodes from the optical signals from other optical network nodes. signal, and provides the filtered optical signal to the target optical amplification component 101.
  • a loop is formed between the input end and the output end of the target optical amplification component, and the optical network node can generate a control optical signal in the loop through the target optical amplification component.
  • the control optical signal can adjust the power of the optical signal input to the target optical amplification component, and can solve the problem of residual wave signals caused by power transfer caused by the stimulated Raman scattering effect.
  • the performance fluctuation problem and the transient overshoot problem of the target optical amplification component reduce the impact of wave addition or wave loss on the performance of the optical network system.
  • the target optical amplification component can generate a control optical signal based on the loop.
  • the energy of the control optical signal comes from the target optical amplification when the service optical signal increases or drops.
  • the excess pump energy released by the component the control optical signal does not need to be injected externally.
  • the process of generating the control optical signal does not need to be performed based on whether the optical signal of the optical network node increases or drops, and the process does not need to be through other devices and Software controls.
  • the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component. Therefore, the power adjustment process of controlling the optical signal can be regarded as an adaptive process. This adaptive process can achieve rapid adjustment of power, can be applied to various wave addition and wave drop scenarios, and saves the time of controlling the optical signal. cost and reduce the size of optical network nodes.
  • the order of setting the optical components in the optical network node can be appropriately adjusted.
  • the order of the lasing capability adjuster, optical attenuator and filter components can be adjusted according to application requirements, and Optical devices can also be added or deleted according to the situation. For example, when the gain of the optical signal from the optical splitting device is greater than the loss of the optical signal, the optical network node does not need to include a laser capability adjuster and an optical attenuator.
  • the optical network node may also not include filter components, lasing capability adjusters and optical attenuators accordingly.
  • An embodiment of the present application also provides a power adjustment method for an optical network node. As shown in Figure 22, the method includes:
  • Step 2201 The optical network node receives the service optical signal provided by other optical network nodes.
  • the target optical amplification component amplifies and outputs the service optical signal.
  • the optical splitting device divides the amplified optical signal into multiple optical signals and outputs them. One of the optical signals is The signal is transmitted through the loop to the target optical amplification component.
  • Step 2202 The optical network node generates a control optical signal in the loop through the target optical amplification component, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component.
  • Step 2203 The optical network node adjusts the power of the service optical signal based on the control optical signal.
  • control light signal includes: a first control light signal and/or a second control light signal, a wave of the first control light signal The length is smaller than the wavelength of all service optical signals output by the target optical amplification component, and the wavelength of the second control optical signal is greater than the wavelength of all service optical signals output by the target optical amplification component.
  • the optical network node when the control optical signal includes: a first control optical signal and a second control optical signal, the optical network node further includes: a lasing capability adjuster.
  • the input end of the lasing ability adjuster is coupled with the output end of the spectroscopic device, and the lasing ability adjuster is located in the loop.
  • the method also includes: the lasing capability adjuster receives the optical signal from the spectroscopic device, and adjusts the lasing capability of the optical signal to control the optical signal.
  • the lasing capability adjuster is an optical amplifier.
  • the optical network node also includes: an optical attenuator.
  • the input end of the optical attenuator is coupled with the output end of the optical splitting device, and the optical attenuator is located in the loop.
  • the method also includes: the optical attenuator receives the optical signal from the spectroscopic device, and attenuates the optical power of the optical signal.
  • the optical network node further includes: a filter device.
  • the input end of the filter device is coupled to the output end of the optical splitter device, and the filter device is located in the loop.
  • the method also includes: the filter device receives the optical signal from the spectroscopic device, filters the control light signal from the optical signal, and provides the filtered control light signal to the target light amplification component.
  • the optical network node further includes: a first wavelength division multiplexer.
  • the input end of the first wavelength division multiplexer is coupled to the output end of the filter device and the output end of other optical network nodes respectively, and the output end of the first wavelength division multiplexer is coupled to the input end of the target optical amplification component.
  • the method also includes: the first wavelength division multiplexer receives the control optical signal from the filter device and the optical signal from other optical network nodes, and provides the control optical signal from the filter device and the control optical signal from other optical network nodes to the target optical amplification component.
  • Optical signals from optical network nodes are used to transmit business optical signals in the optical network system.
  • the optical network node also includes: a first wavelength selector.
  • the input end of the first wavelength selector is used for coupling with the output ends of other optical network nodes, and the output end of the first wavelength selector is coupled with the input end of the first wavelength division multiplexer.
  • the method also includes: the first wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the first wavelength division multiplexer.
  • the optical network node further includes: a second wavelength selector.
  • the input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop.
  • the method further includes: the second wavelength selector filters out the control light signal from the light signal from the spectroscopic device, and provides the control light signal to the target light amplification component.
  • the input end of the second wavelength selector is coupled with the output end of other optical network nodes.
  • the method also includes: the second wavelength selector filters out the service optical signal of the specified wavelength from the optical signal from other optical network nodes, and provides the filtered service optical signal to the target optical amplification component.
  • the optical network node may include: an optical amplifier.
  • the optical amplifier includes multiple optical amplification components.
  • the target light amplification component is one of a plurality of light amplification components.
  • the method further includes: the optical amplifier receives the false optical signal, and fills the false optical signal in the designated wavelength channel.
  • Fake optical signals are optical signals that do not carry business information.
  • the optical network node further includes: a third wavelength selector.
  • the output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier.
  • the method also includes: the third wavelength selector receives the false optical signal and provides the false optical signal to the optical amplifier.
  • the input end of the third wavelength selector is also coupled to the output end of the spectroscopic device, and the third wavelength selector is located in the loop.
  • the method further includes: the third wavelength selector providing the control optical signal generated in the loop to the optical amplifier.
  • the input end of the third wavelength selector is also coupled with the output end of other optical network nodes.
  • the method also includes: the third wavelength selector provides optical signals from other optical network nodes to the optical amplifier.
  • the method further includes: the third wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the optical amplifier.
  • the optical network node further includes: a second wavelength division multiplexer, and the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier.
  • the method also includes: the second wavelength division multiplexer receives the false optical signal and provides the false optical signal to the optical amplifier.
  • the optical network node further includes: a fourth wavelength selector.
  • the input end of the fourth wavelength selector is coupled with the output end of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component.
  • the method also includes: the fourth wavelength selector filters out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provides the filtered optical signal to the target optical amplification component.
  • the optical network node includes: a first wavelength selective switch, a second wavelength selective switch, a target optical amplification component, a spectroscopic device, a lasing capability adjuster and an optical attenuator.
  • the first wavelength selective switch and the optical splitting device are coupled with other optical network nodes, and the second wavelength selective switch is also used to implement the functions of the filter device and the third wavelength selector, and the first wavelength selective switch is also used to implement the fourth Wavelength selector function.
  • the method includes:
  • the first wavelength selective switch receives the optical signal provided by other optical network nodes, filters out the service optical signal of the specified wavelength from the optical signal, filters out the control optical signal from the optical signal, and outputs the filtered optical signal. Signal. It should be noted that when the first wavelength selective switch is also coupled to other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
  • Step 2302 The second wavelength selective switch receives the service optical signal provided by the first wavelength selective switch and the optical signal provided by the lasing capability adjuster, and filters out the control optical signal from the optical signal provided by the lasing capability adjuster. , and then output the filtered control optical signal and the received service optical signal.
  • the control optical signal is generated in the loop by the optical network node through the target optical amplification component.
  • the second wavelength selective switch when the second wavelength selective switch is also coupled with other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
  • Step 2303 When the target optical amplification component does not receive a false optical signal, it amplifies the received service optical signal and control optical signal according to the preset gain, and on the basis of amplifying the control optical signal according to the preset gain, According to the power of the received business optical signal, adjust the power of the control optical signal, and then output the amplified business optical signal and control optical signal; after receiving the false optical signal, the target optical amplification component fills the false optical signal in the designated wavelength channel , amplify the received business optical signal, false optical signal and control optical signal according to the preset gain, and on the basis of amplifying the control optical signal according to the preset gain, according to the received business optical signal and false optical signal The power of the control optical signal is adjusted, and then the amplified service optical signal, false optical signal and control optical signal are output.
  • Step 2304 The optical splitting device divides the received optical signal into multiple optical signals, and then outputs the multiple optical signals.
  • Step 2305 The optical attenuator receives the optical signal from the spectroscopic device, attenuates the optical power of the optical signal, and then outputs the attenuated optical signal.
  • Step 2306 The lasing capability adjuster receives the optical signal from the optical attenuator, adjusts the lasing capability of the control optical signal in the optical signal, and then outputs the service optical signal in the optical signal and the control optical signal after adjusting the lasing capability. .
  • the optical signal output by the lasing capability adjuster will enter the second wavelength selective switch, and the second wavelength selective switch will continue to perform step 2302 based on the received optical signal.
  • the optical network node includes: a first wavelength selective switch, a second wavelength selective switch, a first wavelength division multiplexer, a target optical amplification component, a splitting device, a lasing capability adjuster, an optical attenuator and a filter device.
  • the first wavelength selective switch and the optical splitting device are coupled with other optical network nodes, and the first wavelength division multiplexer is also used to realize the function of the third wavelength selector, and the first wavelength selective switch is also used to realize the fourth wavelength Selector function.
  • the method includes:
  • the first wavelength selective switch receives the optical signal provided by other optical network nodes, filters out the service optical signal of the specified wavelength from the optical signal, filters out the control optical signal from the optical signal, and outputs the filtered optical signal.
  • the first wavelength selective switch when it is also coupled to other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
  • Step 2402 The second wavelength selective switch receives the service optical signal provided by the first wavelength selective switch, and then outputs the received service optical signal. It should be noted that when the second wavelength selective switch is also coupled to other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
  • Step 2403 When the first wavelength division multiplexer does not receive a false optical signal, the first wavelength division multiplexer receives the control optical signal provided by the lasing capability adjuster and receives the service optical signal provided by the second wavelength selection switch. , and output the received service optical signal and control optical signal; when the first wavelength division multiplexer receives the false optical signal, the first wavelength division multiplexer receives the control optical signal provided by the lasing capability adjuster, and receives the second wavelength division multiplexer.
  • the two-wavelength selective switch provides the service optical signal, receives the false optical signal, fills the false optical signal in the designated wavelength channel, and outputs the received business optical signal, control optical signal and false optical signal.
  • the control optical signal is generated in the loop by the optical network node through the target optical amplification component.
  • Step 2404 When the target optical amplification component does not receive a false optical signal, it amplifies the received service optical signal and control optical signal according to the preset gain, and on the basis of amplifying the control optical signal according to the preset gain, According to the power of the received business optical signal, the power of the control optical signal is adjusted, and then the amplified business optical signal and control optical signal are output; after receiving the false optical signal, the target optical amplification component adjusts the received business optical signal according to the preset gain.
  • the optical signal, false optical signal and control optical signal are amplified, and on the basis of amplifying the control optical signal according to the preset gain, the power of the control optical signal is adjusted according to the power of the received business optical signal and false optical signal. Then the amplified service optical signal, false optical signal and control optical signal are output.
  • Step 2405 The optical splitting device divides the received optical signal into multiple optical signals, and then outputs the multiple optical signals.
  • Step 2406 The filter device receives the optical signal from the spectroscopic device, filters out the control light signal from the optical signal from the spectroscopic device, and then outputs the filtered control light signal.
  • Step 2407 The optical attenuator receives the control optical signal from the filter device, attenuates the optical power of the control optical signal, and then outputs the attenuated control optical signal.
  • Step 2408 The lasing capability adjuster receives the control light signal from the optical attenuator, adjusts the lasing capability of the control light signal, and then outputs the control light signal after adjusting the lasing capability. Among them, the control optical signal output by the lasing capability adjuster will enter the first wavelength division multiplexer, and the first wavelength division multiplexer will continue to perform step 2403 based on the received control optical signal.
  • a loop is formed between the input end and the output end of the target optical amplification component, and the optical network node generates a control optical signal in the loop through the target optical amplification component.
  • the control optical signal can adjust the power of the optical signal input to the target optical amplification component, and can solve the problem of residual wave signal performance fluctuations caused by power transfer caused by the stimulated Raman scattering effect. , as well as the transient overshoot problem of the target optical amplification component, and reduce the impact of wave addition or wave loss on the performance of the optical network system.
  • the target optical amplification component can be based on the loop.
  • the energy of the control optical signal comes from the excess pump energy released by the target optical amplification component when the service optical signal increases or drops.
  • the control optical signal does not need to be injected from the outside.
  • the process of generating the control optical signal There is no need to perform the operation based on whether the optical signal of the optical network node increases or drops, and the process does not need to be controlled by other devices and software.
  • the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component. Therefore, the power adjustment process of controlling the optical signal can be regarded as an adaptive process. This adaptive process can achieve rapid adjustment of power, can be applied to various wave addition and wave drop scenarios, and saves the time of controlling the optical signal. cost and reduce the size of optical network nodes.
  • an embodiment of the present application also provides an optical network system.
  • the optical network system includes multiple optical network nodes 10.
  • the plurality of optical network nodes include one or more optical network nodes provided by embodiments of the present application.
  • each optical network node in the plurality of optical network nodes may be an optical network node provided by the embodiment of the present application.
  • an optical amplifier 11 may be provided between two adjacent optical network nodes. Different optical devices in the optical network system can be coupled through communication optical fibers 12 .
  • the optical network system may also include a receiving device.
  • the receiving device receives the optical signal from the optical network node and provides the optical signal to the client side.
  • the receiving device may be an optical transform unit (OTU).
  • FIG. 26 is a schematic structural diagram of a computer device provided by an embodiment of the present application.
  • the computer device 2600 includes a processor 2601, a memory 2602, a communication interface 2603 and a bus 2604.
  • the processor 2601, the memory 2602, and the communication interface 2603 implement communication connections between each other through the bus 2604.
  • Processor 2601 may include a general-purpose processor and/or a special-purpose hardware chip.
  • General-purpose processors can include: central processing unit (CPU), microprocessor or graphics processing unit (GPU).
  • the CPU is, for example, a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • a dedicated hardware chip is a high-performance processing hardware module.
  • Specialized hardware chips include at least one of a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a network processor (NP) One item.
  • the processor 2601 may also be an integrated circuit chip with signal processing capabilities. During the implementation process, part or all of the functions of the optical network node of the present application can be completed by instructions in the form of hardware integrated logic circuits or software in the processor 2601.
  • the memory 2602 is used to store computer programs, which include an operating system 2602a and executable codes (ie, program instructions) 2602b.
  • the memory 2602 is, for example, a read-only memory or other type of static storage device that can store static information and instructions, or a random access memory or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable memory device.
  • the memory 2602 is used to store outbound port queues, etc.
  • the memory 2602 exists independently, for example, and is connected to the processor 2601 through a bus 2604. Or the memory 2602 and the processor 2601 are integrated together.
  • the memory 2602 can store executable code.
  • the processor 2601 is used to execute part or all of the functions of the method provided by the embodiment of the present application. Please refer to the relevant descriptions in the foregoing method embodiments for how the processor 2601 executes this process.
  • the memory 2602 may also include operating systems and other software modules and data required for running processes.
  • the communication interface 2603 uses a transceiver module such as but not limited to a transceiver to implement communication with other devices or communication networks.
  • a transceiver module such as but not limited to a transceiver to implement communication with other devices or communication networks.
  • the communication interface 2603 can be any one or any combination of the following devices: a network interface (such as an Ethernet interface), a wireless network card, and other devices with network access functions.
  • Bus 2604 is any type of communication bus used to interconnect internal components of a computer device (eg, memory 2602, processor 2601, communication interface 2603).
  • a computer device eg, memory 2602, processor 2601, communication interface 2603.
  • system bus e.g., system bus.
  • This embodiment of the present application takes as an example the interconnection of the above-mentioned devices inside the computer device through the bus 2604.
  • the above-mentioned devices inside the computer device 2600 may also communicate with each other using other connection methods besides the bus 2604.
  • the above-mentioned devices inside the computer device 2600 are interconnected through internal logical interfaces.
  • the above-mentioned plurality of devices can be respectively arranged on independent chips, or at least part or all of them can be arranged on the same chip. Whether each device is independently installed on different chips or integrated on one or more chips often depends on the needs of product design.
  • the embodiments of this application do not limit the specific implementation forms of the above devices.
  • the descriptions of the processes corresponding to each of the above drawings have different emphases. For parts that are not detailed in a certain process, you can refer to the relevant descriptions of other processes.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product that provides a program development platform includes one or more computer instructions. When these computer program instructions are loaded and executed on a computer device, the process or function of the method provided by the embodiment of the present application is fully or partially implemented.
  • computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another.
  • computer instructions may be transmitted over a wired connection from a website, computer, server or data center. (such as coaxial cable, optical fiber, digital subscriber line or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website, computer, server or data center.
  • the computer-readable storage medium stores information that provides a program development platform Computer program instructions.
  • An embodiment of the present application also provides a computer cluster.
  • the computer cluster includes multiple computer devices.
  • the multiple computer devices include multiple processors and multiple memories.
  • Program instructions are stored in the multiple memories.
  • the multiple processors run the program instructions, so that the computer cluster executes as provided in the embodiments of the present application.
  • Methods for the implementation method of each computer device in the computer cluster, please refer to the implementation method of the aforementioned computer equipment accordingly, which will not be described again here.
  • Embodiments of the present application also provide a computer-readable storage medium.
  • the computer-readable storage medium is a non-volatile computer-readable storage medium.
  • the computer-readable storage medium includes program instructions. When the program instructions are run on a computer device When the computer device is executed, the method provided by the embodiment of the present application is caused.
  • Embodiments of the present application also provide a computer program product containing instructions.
  • the computer program product When the computer program product is run on a computer, it causes the computer to execute the method provided by the embodiments of the present application.
  • the information including but not limited to user equipment information, user personal information, etc.
  • data including but not limited to data used for analysis, stored data, displayed data, etc.
  • signals involved in this application All are authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.
  • the original data and executable code involved in this application were obtained with full authorization.
  • the terms “first”, “second” and “third” are only used for description purposes and cannot be understood as indicating or implying relative importance.
  • the term “at least one” refers to one or more, and the term “plurality” refers to two or more, unless expressly limited otherwise.

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Abstract

The present application belongs to the technical field of optical communications. Disclosed are an optical network node and an optical network system. The optical network node comprises a target optical amplification assembly and a light-splitting device, wherein the light-splitting device is coupled to both an input end and an output end of the target optical amplification assembly, such that a loop is formed between the output end and the input end of the target optical amplification assembly; the light-splitting device is used for splitting an optical signal from the output end of the target optical amplification assembly into multiple optical signals, and outputting same, one optical signal being transmitted to the target optical amplification assembly by means of the loop; and the optical network node generates a control optical signal in the loop by means of the target optical amplification assembly, and the power of the control optical signal is determined on the basis of the power of a service optical signal received by the target optical amplification assembly. The present application can reduce the effect of wave enhancement or wave loss on the performance of an optical network system.

Description

光网络节点及光网络***Optical network nodes and optical network systems
本申请要求于2022年7月30日提交中国国家知识产权局、申请号为202210912311.X、申请名称为“光网络节点及光网络***”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on July 30, 2022, with application number 202210912311. in this application.
技术领域Technical field
本申请涉及光通信技术领域，特别涉及一种光网络节点及光网络***。The present application relates to the field of optical communication technology, and in particular to an optical network node and an optical network system.
背景技术Background technique
在波分复用(wavelength division multiplexing，WDM)的光网络***中，业务信息通常被调制在不同波长波道上进行传输。当业务信息通过目标波段(如C波段)的波分复用光信号传输时，由于波分复用光信号中的各个波长波道是相互影响的，若波分复用光信号的某一波长波道的功率变化较大，例如某一波长波道出现掉波或增波，在光网络***的光放大器以及光纤的受激拉曼散射(stimulated raman scattering，SRS)效应等作用下，会导致光信号中剩余波道的光传输性能劣化。其中，剩余波道为光信号中除该某一波长波道之外的波长波道。In wavelength division multiplexing (WDM) optical network systems, business information is usually modulated on different wavelength channels for transmission. When business information is transmitted through the wavelength division multiplexing optical signal of the target band (such as C-band), since each wavelength channel in the wavelength division multiplexing optical signal affects each other, if a certain wavelength of the wavelength division multiplexing optical signal The power of the channel changes greatly. For example, a certain wavelength channel has a wave drop or gain. Under the action of the optical amplifier of the optical network system and the stimulated Raman scattering (SRS) effect of the optical fiber, it will cause The optical transmission performance of the remaining channels in the optical signal is degraded. The remaining channels are wavelength channels in the optical signal other than the certain wavelength channel.
发明内容Contents of the invention
本申请提供了一种光网络节点及光网络***。本申请能够减轻增波或掉波对光网络***的性能的影响。本申请提供的技术方案如下：This application provides an optical network node and an optical network system. This application can reduce the impact of wave addition or wave loss on the performance of the optical network system. The technical solutions provided by this application are as follows:
第一方面，本申请提供了一种光网络节点，光网络节点包括目标光放大组件和分光器件。分光器件分别与目标光放大组件的输入端和输出端耦合，使得目标光放大组件的输出端与输入端之间形成回路，分光器件用于将来自目标光放大组件的输出端的光信号分成多路光信号并输出，其中一路光信号通过回路传输到目标光放大组件。光网络节点通过目标光放大组件在回路中生成控制光信号，控制光信号的功率基于目标光放大组件接收的业务光信号的功率确定。In a first aspect, this application provides an optical network node. The optical network node includes a target optical amplification component and an optical splitting device. The optical splitting device is coupled to the input end and the output end of the target optical amplification component respectively, so that a loop is formed between the output end and the input end of the target optical amplification component. The optical splitting device is used to divide the optical signal from the output end of the target optical amplification component into multiple channels. The optical signal is output and one of the optical signals is transmitted to the target optical amplification component through the loop. The optical network node generates a control optical signal in the loop through the target optical amplification component, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component.
在该光网络节点中，目标光放大组件的输入端和输出端之间形成有回路，光网络节点能够通过目标光放大组件在回路中生成控制光信号。在光网络节点出现增波或掉波时，该控制光信号能够对输入目标光放大组件的光信号的功率进行调节，能够解决因受激拉曼散射效应带来的功率转移等导致剩余波信号性能波动问题，以及目标光放大组件的瞬态过冲问题，减轻增波或掉波对光网络***的性能的影响。In the optical network node, a loop is formed between the input end and the output end of the target optical amplification component, and the optical network node can generate a control optical signal in the loop through the target optical amplification component. When an optical network node has a wave increase or drop, the control optical signal can adjust the power of the optical signal input to the target optical amplification component, and can solve the problem of residual wave signals caused by power transfer caused by the stimulated Raman scattering effect. The performance fluctuation problem and the transient overshoot problem of the target optical amplification component reduce the impact of wave addition or wave loss on the performance of the optical network system.
其中，控制光信号包括：第一控制光信号和/或第二控制光信号，第一控制光信号的波长小于目标光放大组件输出的所有业务光信号的波长，第二控制光信号的波长大于目标光放大组件输出的所有业务光信号的波长。此时，控制光信号不占用业务光信号波长通道，分布在业务光信号的波长两端，不占用业务光信号的波长信道，不会影响光网络***的性能。Wherein, the control optical signal includes: a first control optical signal and/or a second control optical signal, the wavelength of the first control optical signal is smaller than the wavelength of all service optical signals output by the target optical amplification component, and the wavelength of the second control optical signal is larger than The wavelength of all service optical signals output by the target optical amplification component. At this time, the control optical signal does not occupy the wavelength channel of the service optical signal and is distributed at both ends of the wavelength of the service optical signal. It does not occupy the wavelength channel of the service optical signal and will not affect the performance of the optical network system.
可选地，当控制光信号包括：第一控制光信号和第二控制光信号时，光网络节点还包括：激射能力调整器，激射能力调整器的输入端与分光器件的输出端耦合，且激射能力调整器位于回路中，激射能力调整器用于调整控制光信号的激射能力。 Optionally, when the control optical signal includes: a first control optical signal and a second control optical signal, the optical network node further includes: a lasing capability adjuster, the input end of the lasing capability adjuster is coupled to the output end of the optical splitting device , and the lasing capability adjuster is located in the loop, and the lasing capability adjuster is used to adjust the lasing capability of the control light signal.
调整控制光信号的激射能力的目的，是对不同波长的控制光信号的激射能力进行平衡，使得用于形成不同波长的控制光信号的分子受激被发射的几率基本相同。这样一来，在业务光信号出现增波或掉波时，泵浦能量能够较均衡地向多个波长的控制光信号进行转移，使得多个波长的控制光信号的功率基本相等。此时，第一控制光信号和第二控制光信号对增波或掉波引起的功率波动的弥补能力基本相同，能够较大程度地维持光网络***的性能稳定性。The purpose of adjusting the lasing ability of the control light signal is to balance the lasing ability of the control light signal of different wavelengths, so that the molecules used to form the control light signal of different wavelengths have basically the same probability of being stimulated and emitted. In this way, when the service optical signal increases or drops, the pump energy can be transferred to the control optical signals of multiple wavelengths in a relatively even manner, so that the power of the control optical signals of multiple wavelengths is basically equal. At this time, the first control optical signal and the second control optical signal have basically the same ability to compensate for power fluctuations caused by wave addition or wave drop, and can maintain the performance stability of the optical network system to a large extent.
在一种实现方式中，激射能力调整器为光放大器。此时，该激射能力调整器103还用于对接收到的光信号进行放大。该光放大器可以为半导体光放大器，或者，该光放大器可以为光纤放大器，如掺铒光纤放大器。In one implementation, the lasing capability adjuster is an optical amplifier. At this time, the lasing capability adjuster 103 is also used to amplify the received optical signal. The optical amplifier may be a semiconductor optical amplifier, or the optical amplifier may be a fiber amplifier, such as an erbium-doped fiber amplifier.
可选地，光网络节点还包括：光衰减器，光衰减器的输入端与分光器件的输出端耦合，且光衰减器位于回路中，光衰减器用于对接收到的光信号的光功率进行衰减，以减小光信号的损耗。在光网络节点中设置光衰减器的目的，是为了保证光信号的增益能够大于光信号的损耗，使得在回路中能够生成控制光信号。在一种可实现方式中，该光衰减器可以为可变光衰减器。Optionally, the optical network node also includes: an optical attenuator, the input end of the optical attenuator is coupled to the output end of the optical splitting device, and the optical attenuator is located in the loop, and the optical attenuator is used to adjust the optical power of the received optical signal. Attenuation to reduce the loss of optical signals. The purpose of setting up an optical attenuator in an optical network node is to ensure that the gain of the optical signal is greater than the loss of the optical signal, so that a control optical signal can be generated in the loop. In an implementation manner, the light attenuator may be a variable light attenuator.
可选地，光网络节点还包括：滤波器件，滤波器件的输入端与分光器件的输出端耦合，且滤波器件位于回路中，滤波器件用于从来自分光器件的光信号中，滤出控制光信号，并向目标光放大组件提供控制光信号。来自分光器件的光信号是目标光放大组件输出的光信号，该光信号包括控制光信号和业务光信号，而控制光信号用于对输入目标光放大组件的业务光信号的功率进行调节，该控制光信号是需要在回路中循环的光信号，因此需要从来自分光器件的光信号中滤出控制光信号，并滤除业务光信号。Optionally, the optical network node also includes: a filter device, the input end of the filter device is coupled to the output end of the optical splitter device, and the filter device is located in the loop, and the filter device is used to filter out the control light from the optical signal from the optical splitter device. signal and provides a control light signal to the target light amplification component. The optical signal from the optical splitting device is the optical signal output by the target optical amplification component. The optical signal includes a control optical signal and a service optical signal. The control optical signal is used to adjust the power of the service optical signal input to the target optical amplification component. The control optical signal is an optical signal that needs to be circulated in the loop. Therefore, the control optical signal needs to be filtered out from the optical signal from the optical splitter device, and the service optical signal needs to be filtered out.
滤波器件可以为任何具有滤波功能的光器件。并且，滤波器件在光网络节点中的位置可以根据应用需求进行设置。下面以以下几种实现方式为例，分别对其进行说明：The filter device can be any optical device with filtering function. Moreover, the position of the filter device in the optical network node can be set according to application requirements. Let's take the following implementation methods as examples to explain them respectively:
在第一种实现方式中，滤波器件可以位于回路中，且位于光网络节点与其他光网络节点传输光信号的传输通路中，即滤波器件位于回路中属于该传输通路的部分。此时，由于输入滤波器件的信号包括来自其他光网络节点的光信号和来自分光器件的光信号，滤波器件可以具有多个输入端，该多个输入端包括：与其他光网络节点的输出端耦合的输入端，及与分光器件的输出端耦合的输入端。由于该滤波器件的输入端还与其他光网络节点的输出端耦合，则滤波器件还用于从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向目标光放大组件提供滤出的业务光信号。In the first implementation manner, the filter device can be located in the loop and in the transmission path through which the optical network node transmits optical signals with other optical network nodes. That is, the filter device is located in the part of the loop that belongs to the transmission path. At this time, since the signals input to the filter device include optical signals from other optical network nodes and optical signals from the optical splitting device, the filter device can have multiple input terminals, and the multiple input terminals include: output terminals with other optical network nodes The coupled input terminal, and the input terminal coupled to the output terminal of the spectroscopic device. Since the input end of the filter device is also coupled with the output end of other optical network nodes, the filter device is also used to filter out the service optical signal of the specified wavelength from the optical signals from other optical network nodes and transmit it to the target optical amplification component. Provides filtered service optical signals.
可选的，在该实现方式中，滤波器件的输入端还可以与位于回路外且属于该光网络节点的其他光器件的输出端耦合，该其他光器件可以提供光信号。则滤波器件还用于从来自其他光器件的光信号中，滤出指定波长的业务光信号，并向目标光放大组件提供滤出的业务光信号。Optionally, in this implementation, the input end of the filter device can also be coupled with the output end of other optical devices located outside the loop and belonging to the optical network node, and the other optical devices can provide optical signals. The filter device is also used to filter out the service optical signal of a specified wavelength from the optical signal from other optical devices, and provide the filtered service optical signal to the target optical amplification component.
在第二种实现方式中，滤波器件可以位于回路中，且位于光网络节点与其他光网络节点传输光信号的传输通路外，即滤波器件位于回路中不属于该传输通路的部分。此时，滤波器件可以具有至少一个输入端，该至少一个输入端包括：与分光器件的输出端耦合的输入端。可选的，该滤波器件还可以包括与其他光器件的输出端耦合的输入端。此时，滤波器件还用于从来自其他光器件的光信号中，滤出指定波长的业务光信号，并向目标光放大组件提供滤出的业务光信号。其中，其他光器件为位于回路外的光器件。In the second implementation manner, the filter device can be located in the loop and outside the transmission path through which the optical network node and other optical network nodes transmit optical signals. That is, the filter device is located in a part of the loop that does not belong to the transmission path. At this time, the filter device may have at least one input terminal, and the at least one input terminal includes: an input terminal coupled with the output terminal of the optical splitting device. Optionally, the filter device may also include an input end coupled to the output end of other optical devices. At this time, the filter device is also used to filter out the service optical signal of a specified wavelength from the optical signal from other optical devices, and provide the filtered service optical signal to the target optical amplification component. Among them, other optical devices are optical devices located outside the loop.
由于该滤波器位于光网络节点与其他光网络节点传输光信号的传输通路外，则该滤波器件输出的光信号可以通过具有多个输入端，且能够通过输出端输出来自该多个输入端的信号的光器件实现。可选地，该光器件可以为波分复用器或波长选择器等光器件。 Since the filter is located outside the transmission path between the optical network node and other optical network nodes, the optical signal output by the filter device can have multiple input terminals, and can output signals from the multiple input terminals through the output terminal. Optical device implementation. Optionally, the optical device may be an optical device such as a wavelength division multiplexer or a wavelength selector.
例如，光网络节点还可以包括：第一波分复用器。第一波分复用器的输入端与滤波器件的输出端耦合。且第一波分复用器的输入端还用于与其他光器件的输出端耦合。第一波分复用器的输出端与目标光放大组件的输入端耦合。且第一波分复用器可以位于光网络节点与其他光网络节点传输光信号的传输通路中。当第一波分复用器的输入端与滤波器件的输出端耦合时，第一波分复用器用于向目标光放大组件提供来自滤波器件的控制光信号。当第一波分复用器的输入端还与其他光器件的输出端耦合时，第一波分复用器还用于向目标光放大组件提供来自其他光器件的业务光信号。For example, the optical network node may further include: a first wavelength division multiplexer. The input terminal of the first wavelength division multiplexer is coupled with the output terminal of the filter device. And the input terminal of the first wavelength division multiplexer is also used to couple with the output terminals of other optical devices. The output end of the first wavelength division multiplexer is coupled with the input end of the target optical amplification component. And the first wavelength division multiplexer may be located in a transmission path for transmitting optical signals between the optical network node and other optical network nodes. When the input end of the first wavelength division multiplexer is coupled to the output end of the filter device, the first wavelength division multiplexer is used to provide the control optical signal from the filter device to the target optical amplification component. When the input end of the first wavelength division multiplexer is also coupled with the output end of other optical devices, the first wavelength division multiplexer is also used to provide the target optical amplification component with service optical signals from other optical devices.
此时，光网络节点还可以包括：第一波长选择器。第一波长选择器的输入端用于与其他光网络节点的输出端耦合。第一波长选择器的输出端与第一波分复用器的输入端耦合。第一波长选择器用于从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向第一波分复用器提供滤出的业务光信号。此时，第一波分复用器用于将滤出的控制光信号和业务光信号汇聚至目标光放大组件。At this time, the optical network node may also include: a first wavelength selector. The input terminal of the first wavelength selector is used for coupling with the output terminals of other optical network nodes. The output terminal of the first wavelength selector is coupled to the input terminal of the first wavelength division multiplexer. The first wavelength selector is used to filter out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provide the filtered service optical signals to the first wavelength division multiplexer. At this time, the first wavelength division multiplexer is used to converge the filtered control optical signal and service optical signal to the target optical amplification component.
在滤出控制光信号的第二种实现方式中，光网络节点还包括：第二波长选择器。第二波长选择器的输入端与分光器件的输出端耦合，且第二波长选择器位于回路中。第二波长选择器具有对波长进行选择的作用，因此，第二波长选择器能够从来自分光器件的光信号中，滤出控制光信号，并向目标光放大组件提供控制光信号。In the second implementation manner of filtering out the control optical signal, the optical network node further includes: a second wavelength selector. The input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop. The second wavelength selector has the function of selecting wavelengths. Therefore, the second wavelength selector can filter out the control optical signal from the optical signal from the spectroscopic device and provide the control optical signal to the target optical amplification component.
可选的，第二波长选择器的输入端还用于与其他光网络节点的输出端耦合，则第二波长选择器还用于从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向目标光放大组件提供滤出的业务光信号。Optionally, the input end of the second wavelength selector is also used to couple with the output end of other optical network nodes, and the second wavelength selector is also used to filter out the specified wavelength from the optical signals from other optical network nodes. service optical signal, and provides the filtered service optical signal to the target optical amplification component.
在一种实现方式中，光网络节点包括：光放大器，光放大器包括多个光放大组件，目标光放大组件为多个光放大组件中的一个。In an implementation manner, the optical network node includes: an optical amplifier, the optical amplifier includes multiple optical amplification components, and the target optical amplification component is one of the multiple optical amplification components.
在本申请的一种可能的实现场景中，光放大器还用于接收假光信号，假光信号为未携带业务信息的光信号。在光网络节点接收的业务光信号出现掉波时，可以在出现掉波的波长波道中填充假光信号，使得填充假光信号后的业务光信号维持为满波状态，进而使控制光信号的功率自适应地调整为业务光信号处于满波时的功率，以维持因受激拉曼散射效应引起的功率转移的稳定性。类似的，在光网络***会出现增波的情况下，可以预先在需要增波的波长波道中预填充假光信号，待填充有假光信号的业务光信号传输至需要增波的光网络节点时，去除假光信号，并向业务光信号添加假光信号，以维持因受激拉曼散射效应引起的功率转移的稳定性。In a possible implementation scenario of this application, the optical amplifier is also used to receive false optical signals. The false optical signals are optical signals that do not carry service information. When the service optical signal received by the optical network node drops, the false optical signal can be filled in the wavelength channel where the drop occurs, so that the service optical signal after filling the false optical signal remains in a full wave state, thereby making the control optical signal The power is adaptively adjusted to the power when the service optical signal is at full wave to maintain the stability of power transfer caused by the stimulated Raman scattering effect. Similarly, when the optical network system will have increased wavelength, the false optical signal can be pre-filled in the wavelength channel that needs to be increased, and the service optical signal to be filled with the false optical signal is transmitted to the optical network node that needs to be increased. At this time, the false optical signal is removed and the false optical signal is added to the service optical signal to maintain the stability of power transfer caused by the stimulated Raman scattering effect.
可选地，光网络节点还包括：第三波长选择器。第三波长选择器的输出端与光放大器的输入端耦合。第三波长选择器用于接收假光信号，并向光放大器提供假光信号。可选地，第三波长选择器可以为波长选择开关或阵列波导光栅等光器件。该第三波长选择器的实现方式有多种，下面以以下几种为例为其进行说明：Optionally, the optical network node further includes: a third wavelength selector. The output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier. The third wavelength selector is used to receive the false optical signal and provide the false optical signal to the optical amplifier. Optionally, the third wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating. There are many ways to implement the third wavelength selector. The following examples are used to illustrate them:
在第一种实现方式中，第三波长选择器可以位于回路中。此时，第三波长选择器的输入端还与分光器件的输出端耦合，第三波长选择器还用于向光放大器提供回路中生成的控制光信号。In a first implementation, the third wavelength selector may be located in the loop. At this time, the input end of the third wavelength selector is also coupled with the output end of the optical splitting device, and the third wavelength selector is also used to provide the optical amplifier with the control optical signal generated in the loop.
可选地，在该实现方式中，该第三波长选择器的实现方式还可以根据第三波长选择器是否位于光网络节点与其他光网络节点传输光信号的传输通路中进行区分。下面分别对其两种实现情况进行说明：Optionally, in this implementation, the implementation of the third wavelength selector can also be distinguished based on whether the third wavelength selector is located in a transmission path between an optical network node and other optical network nodes for transmitting optical signals. The two implementations are described below:
在该实现方式的第一种实现情况中，第三波长选择器位于回路中，且位于光网络节点与其他光网络节点传输光信号的传输通路中，即第三波长选择器位于回路中属于该传输通路的 部分。此时，第三波长选择器的输入端还可以与其他光网络节点的输出端耦合，第三波长选择器还用于向光放大器提供来自其他光网络节点的光信号。In the first implementation of this implementation, the third wavelength selector is located in the loop and is located in the transmission path between the optical network node and other optical network nodes for transmitting optical signals. That is, the third wavelength selector is located in the loop and belongs to the optical network node. transmission path part. At this time, the input end of the third wavelength selector can also be coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier.
在该实现方式的第二种实现情况中，第三波长选择器可以位于回路中，且位于光网络节点10与其他光网络节点传输光信号的传输通路外，即第三波长选择器位于回路中不属于该传输通路的部分。此时，第三波长选择器可以具有至少两个输入端，该至少两个输入端包括：用于接收假光信号的输入端和与分光器件的输出端耦合的输入端。可选的，该第三波长选择器还可以包括与其他光器件的输出端耦合的输入端。In a second implementation of this implementation, the third wavelength selector may be located in the loop and outside the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. That is, the third wavelength selector may be located in the loop. Parts that do not belong to the transmission path. At this time, the third wavelength selector may have at least two input terminals, and the at least two input terminals include: an input terminal for receiving the false optical signal and an input terminal coupled to the output terminal of the optical splitting device. Optionally, the third wavelength selector may also include an input terminal coupled to the output terminals of other optical devices.
在第二种实现方式中，第三波长选择器可以位于光网络节点10与其他光网络节点传输光信号的传输通路中，且位于回路外。此时，第三波长选择器的输入端还与其他光网络节点的输出端耦合，第三波长选择器还用于向光放大器提供来自其他光网络节点的光信号。In the second implementation manner, the third wavelength selector may be located in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, and located outside the loop. At this time, the input end of the third wavelength selector is also coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier.
需要说明的是，第三波长选择器的设置位置和设置方式需要保证第三波长选择器提供的假光信号不会被滤波器件和波长选择器等器件过滤掉，需要保证第三波长选择器输入的假光信号能够传输至光放大器。例如，当第三波长选择器和滤波器件均位于回路中时，第三波长选择器的输入端可以与滤波器件的输出端耦合。或者，当第三波长选择器的输出端与滤波器件的输入端耦合时，滤波器件在对来自分光器件的光信号进行过滤时，还需要滤出假光信号，以便于能够向目标光放大组件提供假光信号。It should be noted that the setting position and setting method of the third wavelength selector need to ensure that the false optical signal provided by the third wavelength selector will not be filtered out by filter devices and wavelength selectors. It is necessary to ensure that the input of the third wavelength selector The false optical signal can be transmitted to the optical amplifier. For example, when both the third wavelength selector and the filter device are located in the loop, the input end of the third wavelength selector can be coupled with the output end of the filter device. Or, when the output end of the third wavelength selector is coupled to the input end of the filter device, when the filter device filters the optical signal from the spectroscopic device, it also needs to filter out the false optical signal so that it can be directed to the target light amplification component. Provides false light signals.
可选的，光网络节点还包括：第二波分复用器，第二波分复用器的输出端与光放大器的输入端耦合，第二波分复用器用于接收假光信号，并向光放大器提供假光信号。Optionally, the optical network node also includes: a second wavelength division multiplexer, the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier, the second wavelength division multiplexer is used to receive the false optical signal, and Provides a false optical signal to the optical amplifier.
可选地，光网络节点10还可以包括：第四波长选择器。第四波长选择器的输入端用于与其他光网络节点的输出端耦合，第四波长选择器的输出端与目标光放大组件101的输入端耦合。第四波长选择器用于从来自其他光网络节点的光信号中，滤除来自其他光网络节点的控制光信号，并向目标光放大组件101提供经过过滤的光信号。Optionally, the optical network node 10 may further include: a fourth wavelength selector. The input end of the fourth wavelength selector is used to couple with the output ends of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component 101 . The fourth wavelength selector is used to filter out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provide the filtered optical signals to the target optical amplification component 101 .
若其他光网络节点产生的控制光信号进入该光网络节点10，该其他光网络节点产生的控制光信号会与该光网络节点10中的控制光信号产生干扰，影响该光网络节点10中的控制光信号的功率，从而影响该控制光信号对维护光网络***的稳定性所起的作用。因此，通过设置该第四波长选择器，能够滤除来自其他光网络节点的控制光信号，从而保证光网络***的稳定性。If the control optical signals generated by other optical network nodes enter the optical network node 10 , the control optical signals generated by the other optical network nodes will interfere with the control optical signals in the optical network node 10 , affecting the optical network node 10 . Control the power of the optical signal, thereby affecting the role of the controlled optical signal in maintaining the stability of the optical network system. Therefore, by setting the fourth wavelength selector, control optical signals from other optical network nodes can be filtered, thereby ensuring the stability of the optical network system.
第二方面，本申请提供了一种光网络节点的功率调节方法。该方法包括：光网络节点接收其他光网络节点提供的业务光信号，目标光放大组件对该业务光信号进行放大并输出，分光器件将经过放大的光信号分成多路光信号并输出，其中一路光信号通过回路传输到目标光放大组件；光网络节点通过目标光放大组件在回路中生成控制光信号，控制光信号的功率基于目标光放大组件接收的业务光信号的功率确定；光网络节点基于控制光信号调整业务光信号的功率。In a second aspect, this application provides a power adjustment method for an optical network node. The method includes: an optical network node receives a service optical signal provided by other optical network nodes, a target optical amplification component amplifies and outputs the service optical signal, and an optical splitting device divides the amplified optical signal into multiple optical signals and outputs one of them. The optical signal is transmitted to the target optical amplification component through the loop; the optical network node generates a control optical signal in the loop through the target optical amplification component, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component; the optical network node is based on Control the optical signal to adjust the power of the service optical signal.
可选地，控制光信号包括：第一控制光信号和/或第二控制光信号，第一控制光信号的波长小于目标光放大组件输出的所有业务光信号的波长，第二控制光信号的波长大于目标光放大组件输出的所有业务光信号的波长。Optionally, the control optical signal includes: a first control optical signal and/or a second control optical signal, the wavelength of the first control optical signal is smaller than the wavelength of all service optical signals output by the target optical amplification component, and the second control optical signal has The wavelength is greater than the wavelength of all service optical signals output by the target optical amplification component.
可选地，当控制光信号包括：第一控制光信号和第二控制光信号时，光网络节点还包括：激射能力调整器。激射能力调整器的输入端与分光器件的输出端耦合，且激射能力调整器位于回路中。此时，该方法还包括：激射能力调整器接收来自分光器件的光信号，调整光信号中控制光信号的激射能力。Optionally, when the control optical signal includes: a first control optical signal and a second control optical signal, the optical network node further includes: a lasing capability adjuster. The input end of the lasing ability adjuster is coupled with the output end of the spectroscopic device, and the lasing ability adjuster is located in the loop. At this time, the method also includes: the lasing capability adjuster receives the optical signal from the spectroscopic device, and adjusts the lasing capability of the optical signal to control the optical signal.
在一种实现方式中，激射能力调整器为光放大器。 In one implementation, the lasing capability adjuster is an optical amplifier.
可选地，光网络节点还包括：光衰减器。光衰减器的输入端与分光器件的输出端耦合，且光衰减器位于回路中。此时，该方法还包括：光衰减器接收来自分光器件的光信号，对该光信号的光功率进行衰减。Optionally, the optical network node also includes: an optical attenuator. The input end of the optical attenuator is coupled with the output end of the optical splitting device, and the optical attenuator is located in the loop. At this time, the method also includes: the optical attenuator receives the optical signal from the spectroscopic device, and attenuates the optical power of the optical signal.
在滤出控制光信号的一种实现方式中，光网络节点还包括：滤波器件。滤波器件的输入端与分光器件的输出端耦合，且滤波器件位于回路中。此时，该方法还包括：滤波器件接收来自分光器件的光信号，从该光信号中滤出控制光信号，并向目标光放大组件提供滤出的控制光信号。In an implementation manner of filtering out the control optical signal, the optical network node further includes: a filter device. The input end of the filter device is coupled to the output end of the optical splitter device, and the filter device is located in the loop. At this time, the method also includes: the filter device receives the optical signal from the spectroscopic device, filters the control light signal from the optical signal, and provides the filtered control light signal to the target light amplification component.
可选地，光网络节点还包括：第一波分复用器。第一波分复用器的输入端分别与滤波器件的输出端、其他光网络节点的输出端耦合，第一波分复用器的输出端与目标光放大组件的输入端耦合。此时，该方法还包括：第一波分复用器接收来自滤波器件的控制光信号和来自其他光网络节点的光信号，向目标光放大组件提供来自滤波器件的控制光信号，及来自其他光网络节点的光信号。其中，光网络节点和其他光网络节点均用于在光网络***中传输业务光信号。Optionally, the optical network node further includes: a first wavelength division multiplexer. The input end of the first wavelength division multiplexer is coupled to the output end of the filter device and the output end of other optical network nodes respectively, and the output end of the first wavelength division multiplexer is coupled to the input end of the target optical amplification component. At this time, the method also includes: the first wavelength division multiplexer receives the control optical signal from the filter device and the optical signal from other optical network nodes, and provides the control optical signal from the filter device and the control optical signal from other optical network nodes to the target optical amplification component. Optical signals from optical network nodes. Among them, optical network nodes and other optical network nodes are used to transmit business optical signals in the optical network system.
可选的，光网络节点还包括：第一波长选择器。第一波长选择器的输入端用于与其他光网络节点的输出端耦合，第一波长选择器的输出端与第一波分复用器的输入端耦合。此时，该方法还包括：第一波长选择器从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向第一波分复用器提供滤出的业务光信号。Optionally, the optical network node also includes: a first wavelength selector. The input end of the first wavelength selector is used for coupling with the output ends of other optical network nodes, and the output end of the first wavelength selector is coupled with the input end of the first wavelength division multiplexer. At this time, the method also includes: the first wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the first wavelength division multiplexer.
在滤出控制光信号的另一种实现方式中，光网络节点还包括：第二波长选择器。第二波长选择器的输入端与分光器件的输出端耦合，且第二波长选择器位于回路中。此时，该方法还包括：第二波长选择器从来自分光器件的光信号中，滤出控制光信号，并向目标光放大组件提供控制光信号。In another implementation manner of filtering out the control optical signal, the optical network node further includes: a second wavelength selector. The input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop. At this time, the method further includes: the second wavelength selector filters out the control light signal from the light signal from the spectroscopic device, and provides the control light signal to the target light amplification component.
可选的，第二波长选择器的输入端与其他光网络节点的输出端耦合。此时，该方法还包括：第二波长选择器从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向目标光放大组件提供滤出的业务光信号。Optionally, the input end of the second wavelength selector is coupled with the output end of other optical network nodes. At this time, the method also includes: the second wavelength selector filters out the service optical signal of the specified wavelength from the optical signal from other optical network nodes, and provides the filtered service optical signal to the target optical amplification component.
可选地，光网络节点可以包括：光放大器。光放大器包括多个光放大组件。在一种实现方式中，目标光放大组件为多个光放大组件中的一个。Optionally, the optical network node may include: an optical amplifier. The optical amplifier includes multiple optical amplification components. In one implementation, the target light amplification component is one of a plurality of light amplification components.
可选地，该方法还包括：光放大器接收假光信号，并在指定波长波道中填充假光信号。假光信号为未携带业务信息的光信号。Optionally, the method further includes: the optical amplifier receives the false optical signal, and fills the false optical signal in the designated wavelength channel. Fake optical signals are optical signals that do not carry business information.
可选地，光网络节点还包括：第三波长选择器。第三波长选择器的输出端与光放大器的输入端耦合。此时，该方法还包括：第三波长选择器接收假光信号，并向光放大器提供假光信号。Optionally, the optical network node further includes: a third wavelength selector. The output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier. At this time, the method also includes: the third wavelength selector receives the false optical signal and provides the false optical signal to the optical amplifier.
在一种实现方式中，第三波长选择器的输入端还与分光器件的输出端耦合，且第三波长选择器位于回路中。此时，该方法还包括：第三波长选择器向光放大器提供在回路中生成的控制光信号。In one implementation, the input end of the third wavelength selector is also coupled to the output end of the spectroscopic device, and the third wavelength selector is located in the loop. At this time, the method further includes: the third wavelength selector providing the control optical signal generated in the loop to the optical amplifier.
可选地，第三波长选择器的输入端还与其他光网络节点的输出端耦合。此时，该方法还包括：第三波长选择器向光放大器提供来自其他光网络节点的光信号。例如，该方法还包括：第三波长选择器从来自其他光网络节点的光信号中滤出指定波长的业务光信号，并向光放大器提供滤出的业务光信号。Optionally, the input end of the third wavelength selector is also coupled with the output end of other optical network nodes. At this time, the method also includes: the third wavelength selector provides optical signals from other optical network nodes to the optical amplifier. For example, the method further includes: the third wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the optical amplifier.
在另一种实现方式中，光网络节点还包括：第二波分复用器，第二波分复用器的输出端与光放大器的输入端耦合。此时，该方法还包括：第二波分复用器接收假光信号，并向光放大器提供假光信号。 In another implementation manner, the optical network node further includes: a second wavelength division multiplexer, and the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier. At this time, the method also includes: the second wavelength division multiplexer receives the false optical signal and provides the false optical signal to the optical amplifier.
可选地，光网络节点还包括：第四波长选择器。第四波长选择器的输入端与其他光网络节点的输出端耦合，第四波长选择器的输出端与目标光放大组件的输入端耦合。此时，该方法还包括：第四波长选择器从来自其他光网络节点的光信号中，滤除来自其他光网络节点的控制光信号，并向目标光放大组件提供经过过滤的光信号。Optionally, the optical network node further includes: a fourth wavelength selector. The input end of the fourth wavelength selector is coupled with the output end of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component. At this time, the method also includes: the fourth wavelength selector filters out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provides the filtered optical signal to the target optical amplification component.
第三方面，本申请提供了一种光网络***，光网络***包括多个光网络节点，多个光网络节点包括一个或多个第一方面以及其任一种可能的实现方式中任一的光网络节点。In a third aspect, this application provides an optical network system. The optical network system includes multiple optical network nodes. The multiple optical network nodes include one or more of the first aspect and any of its possible implementations. Optical network nodes.
第四方面，本申请提供了一种计算机设备，包括存储器和处理器，存储器存储有程序指令，处理器运行程序指令以执行本申请第二方面以及其任一种可能的实现方式中提供的方法。In the fourth aspect, this application provides a computer device, including a memory and a processor. The memory stores program instructions, and the processor runs the program instructions to execute the method provided in the second aspect of this application and any possible implementation thereof. .
第五方面，本申请提供了一种计算机集群，包括多个计算机设备，多个计算机设备包括多个处理器和多个存储器，多个存储器中存储有程序指令，多个处理器运行程序指令，使得计算机集群执行本申请第二方面以及其任一种可能的实现方式中提供的方法。In a fifth aspect, this application provides a computer cluster, including multiple computer devices. The multiple computer devices include multiple processors and multiple memories. Program instructions are stored in the multiple memories, and the multiple processors run the program instructions. The computer cluster is caused to execute the method provided in the second aspect of this application and any possible implementation manner thereof.
第六方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质为非易失性计算机可读存储介质，该计算机可读存储介质包括程序指令，当程序指令在计算机设备上运行时，使得计算机设备执行本申请第二方面以及其任一种可能的实现方式中提供的方法。In a sixth aspect, the application provides a computer-readable storage medium. The computer-readable storage medium is a non-volatile computer-readable storage medium. The computer-readable storage medium includes program instructions. When the program instructions are stored on a computer device, When running, the computer device is caused to execute the method provided in the second aspect of the application and any possible implementation manner thereof.
第七方面，本申请提供了一种包含指令的计算机程序产品，当计算机程序产品在计算机上运行时，使得计算机执行本申请第二方面以及其任一种可能的实现方式中提供的方法。In a seventh aspect, this application provides a computer program product containing instructions. When the computer program product is run on a computer, it causes the computer to execute the method provided in the second aspect of this application and any possible implementation thereof.
附图说明Description of the drawings
图1是本申请实施例提供的一种在受激拉曼散射效应的影响下，光信号的功率发生转移前后光信号的功率谱；Figure 1 is a power spectrum of an optical signal before and after the power of the optical signal is transferred under the influence of the stimulated Raman scattering effect provided by an embodiment of the present application;
图2是本申请实施例提供的一种光网络***的示意图；Figure 2 is a schematic diagram of an optical network system provided by an embodiment of the present application;
图3是本申请实施例提供的一种光网络节点的示意图；Figure 3 is a schematic diagram of an optical network node provided by an embodiment of the present application;
图4是本申请实施例提供的一种光网络节点接收到的光信号未出现增波或掉波时，业务光信号和控制光信号的功率示意图；Figure 4 is a schematic diagram of the power of the service optical signal and the control optical signal when the optical signal received by the optical network node according to the embodiment of the present application does not increase or drop;
图5是本申请实施例提供的一种光网络节点接收到的光信号出现掉波时，业务光信号和控制光信号的功率；Figure 5 shows the power of the service optical signal and the control optical signal when the optical signal received by an optical network node according to the embodiment of the present application drops.
图6是本申请实施例提供的一种当业务光信号发生掉波，生成控制光信号和未生成控制光信号两种情况下，因受激拉曼散射效应导致的剩余波信号功率波动的示意图；Figure 6 is a schematic diagram of the residual wave signal power fluctuation caused by the stimulated Raman scattering effect when the service optical signal is dropped and the control optical signal is generated and the control optical signal is not generated according to the embodiment of the present application. ;
图7是本申请实施例提供的一种当业务光信号发生掉波，且未生成控制光信号时，目标光放大组件的光放瞬态效应的示意图；Figure 7 is a schematic diagram illustrating the transient effect of light amplification of the target optical amplification component when the service optical signal drops and no control optical signal is generated according to the embodiment of the present application;
图8是本申请实施例提供的一种当业务光信号发生掉波，生成控制光信号时，目标光放大组件的光放瞬态效应；Figure 8 is an optical amplification transient effect of a target optical amplification component when a service optical signal drops and a control optical signal is generated according to an embodiment of the present application;
图9是本申请实施例提供的一种光网络节点包括激射能力调整器的示意图；Figure 9 is a schematic diagram of an optical network node including a lasing capability adjuster provided by an embodiment of the present application;
图10是本申请实施例提供的一种光网络节点包括光衰减器的示意图；Figure 10 is a schematic diagram of an optical network node including an optical attenuator provided by an embodiment of the present application;
图11是本申请实施例提供的一种光网络节点包括滤波器件的示意图；Figure 11 is a schematic diagram of an optical network node including a filter device provided by an embodiment of the present application;
图12是本申请实施例提供的另一种光网络节点包括滤波器件的示意图；Figure 12 is a schematic diagram of another optical network node including a filter device provided by an embodiment of the present application;
图13是本申请实施例提供的一种光网络节点包括第一波分复用器的示意图；Figure 13 is a schematic diagram of an optical network node including a first wavelength division multiplexer provided by an embodiment of the present application;
图14是本申请实施例提供的一种通过第二波长选择开关实现第一波长选择器的功能的示意图；Figure 14 is a schematic diagram of realizing the function of the first wavelength selector through a second wavelength selective switch according to an embodiment of the present application;
图15是本申请实施例提供的一种通过第二波长选择开关实现第一波分复用器的功能的示意图； Figure 15 is a schematic diagram of a method of realizing the function of a first wavelength division multiplexer through a second wavelength selective switch according to an embodiment of the present application;
图16是本申请实施例提供的一种通过第二波长选择开关实现第二波长选择器的功能的示意图；Figure 16 is a schematic diagram of realizing the function of a second wavelength selector through a second wavelength selective switch according to an embodiment of the present application;
图17是本申请实施例提供的一种光网络节点接收到的业务光信号掉波的情况下，在出现掉波的波长波道中填充假光信号后，业务光信号、假光信号和控制光信号的示意图；Figure 17 shows a situation where the service optical signal received by the optical network node drops out according to the embodiment of the present application. After the wavelength channel where the dropout occurs is filled with false optical signals, the service optical signal, the false optical signal and the control optical signal Schematic diagram of the signal;
图18是本申请实施例提供的一种通过第二波长选择开关实现第三波长选择器的功能的示意图；FIG. 18 is a schematic diagram of realizing the function of a third wavelength selector through a second wavelength selective switch according to an embodiment of the present application;
图19是本申请实施例提供的一种通过第一波长选择开关实现第三波长选择器的功能的示意图；FIG. 19 is a schematic diagram of realizing the function of a third wavelength selector through a first wavelength selective switch according to an embodiment of the present application;
图20是本申请实施例提供的一种通过第一波分复用器实现该第二波分复用器的功能的示意图；Figure 20 is a schematic diagram of realizing the function of the second wavelength division multiplexer through the first wavelength division multiplexer provided by the embodiment of the present application;
图21是本申请实施例提供的一种光网络节点不包括第一波长选择开关和第二波长选择开关的示意图；Figure 21 is a schematic diagram of an optical network node that does not include a first wavelength selective switch and a second wavelength selective switch provided by an embodiment of the present application;
图22是本申请实施例提供的一种光网络节点的功率调节方法的流程图；Figure 22 is a flow chart of a power adjustment method for an optical network node provided by an embodiment of the present application;
图23是本申请实施例提供的一种通过图18所示的光网络节点实现光网络节点的功率调节方法的流程图；Figure 23 is a flow chart of a method for realizing power adjustment of an optical network node through the optical network node shown in Figure 18 provided by an embodiment of the present application;
图24是本申请实施例提供的一种通过图20所示的光网络节点实现光网络节点的功率调节方法的流程图；Figure 24 is a flow chart of a method for realizing power adjustment of an optical network node through the optical network node shown in Figure 20 provided by an embodiment of the present application;
图25是本申请实施例提供的另一种光网络***的示意图；Figure 25 is a schematic diagram of another optical network system provided by an embodiment of the present application;
图26是本申请实施例提供的一种计算机设备的结构示意图。Figure 26 is a schematic structural diagram of a computer device provided by an embodiment of the present application.
具体实施方式Detailed ways
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.
为便于理解，下面先对本申请实施例中涉及的相关原理进行介绍。For ease of understanding, the relevant principles involved in the embodiments of this application are first introduced below.
受激拉曼散射(Stimulated Raman Scattering，SRS)效应表现为短波长波道传输的光信号的功率会向长波长波道传输的光信号转移。在受激拉曼散射效应的影响下，光信号的功率发生转移的大小与波道位置和同一光纤中的波道数目相关。例如，当光频谱由C波段扩展为C+L波段，受激拉曼散射效应导致的功率转移将增大约4倍。其中，C波段和C+L波段分别为不同的传输频带。图1为在受激拉曼散射效应的影响下，光信号的功率发生转移前后光信号的功率谱。在图1中，坐标轴的纵轴表示光信号的功率，坐标轴的横轴表示光信号的波长，带箭头的曲线表示功率转移方向，且为便于查看，图1中未示出所有功率转移方向。根据该图1可以看出，在功率转移前，七个波长的光信号的功率相同，在功率转移后，较小波长的光信号的功率变小，较大波长的光信号的功率变大，七个波长的光信号的功率谱的斜率由0变成正数，即功率谱出现了倾斜的情况。The Stimulated Raman Scattering (SRS) effect shows that the power of optical signals transmitted by short-wavelength channels will transfer to optical signals transmitted by long-wavelength channels. Under the influence of the stimulated Raman scattering effect, the magnitude of the power transfer of the optical signal is related to the channel position and the number of channels in the same optical fiber. For example, when the optical spectrum expands from the C-band to the C+L band, the power transfer caused by the stimulated Raman scattering effect will increase by approximately 4 times. Among them, C-band and C+L-band are different transmission frequency bands. Figure 1 shows the power spectrum of the optical signal before and after the power of the optical signal is transferred under the influence of stimulated Raman scattering effect. In Figure 1, the vertical axis of the coordinate axis represents the power of the optical signal, the horizontal axis of the coordinate axis represents the wavelength of the optical signal, and the curve with an arrow represents the power transfer direction, and for the convenience of viewing, all power transfers are not shown in Figure 1 direction. According to Figure 1, it can be seen that before the power transfer, the power of the seven wavelength optical signals is the same. After the power transfer, the power of the smaller wavelength optical signal becomes smaller, and the power of the larger wavelength optical signal becomes larger. The slope of the power spectrum of the seven-wavelength optical signal changes from 0 to a positive number, that is, the power spectrum becomes tilted.
图2为本申请实施例提供的一种光网络***的示意图。如图2所示，光网络***通常包括多个光网络节点，相邻设置的两个光网络节点之间可以通过通信光纤传输光信号。在一种可实现方式中，光网络节点可以为可重构光分插复用器(reconfigurable optical add-drop multiplexer，ROADM)站点。如图2所示，光网络节点可以包括第一波长选择开关(wavelength selective switch，WSS)、第二波长选择开关和光放大器。第一波长选择开关和第二波长选择开关均能够与多个光网络节点耦合，第一波长选择开关和第二波长选择开关均用于对接收到的光信号进行波长选择。其中，在第一波长选择开关和第二波长选择开关中，由于第一波 长选择开关距离向该第一波长选择开关所属的光网络节点传输光信号的其他光网络节点较近，第一波长选择开关可视为该其他光网络节点的收端光器件，因此第一波长选择开关通常也称为收端波长选择开关。类似地，第二波长选择开关通常也称为发端波长选择开关。并且，由于光信号在传输过程中会出现信号衰减的情况，因此，相邻设置两个光网络节点之间还可以设置有光放大器(图2中未示出)，以对光信号进行放大，使得传输至目的地的光信号能够满足使用需求。并且，第一波长选择开关和第二波长选择开关均可以具有多个输入端，该图2中指向第一波长选择开关和第二波长选择开关的箭头均用于指示输入端。Figure 2 is a schematic diagram of an optical network system provided by an embodiment of the present application. As shown in Figure 2, an optical network system usually includes multiple optical network nodes, and optical signals can be transmitted between two adjacent optical network nodes through communication optical fibers. In an implementation manner, the optical network node may be a reconfigurable optical add-drop multiplexer (ROADM) site. As shown in Figure 2, the optical network node may include a first wavelength selective switch (wavelength selective switch, WSS), a second wavelength selective switch and an optical amplifier. Both the first wavelength selective switch and the second wavelength selective switch can be coupled to multiple optical network nodes, and both the first wavelength selective switch and the second wavelength selective switch are used to select the wavelength of the received optical signal. Among them, in the first wavelength selective switch and the second wavelength selective switch, due to the first wave The long selective switch is close to other optical network nodes that transmit optical signals to the optical network node to which the first wavelength selective switch belongs. The first wavelength selective switch can be regarded as the receiving optical device of the other optical network nodes, so the first wavelength Selective switches are also often called receiving end wavelength selective switches. Similarly, the second wavelength selective switch is also commonly referred to as the transmitting wavelength selective switch. Moreover, since optical signals may suffer signal attenuation during transmission, an optical amplifier (not shown in Figure 2) can also be provided between two adjacent optical network nodes to amplify the optical signal. So that the optical signal transmitted to the destination can meet the usage requirements. Furthermore, both the first wavelength selective switch and the second wavelength selective switch may have multiple input terminals, and the arrows pointing to the first wavelength selective switch and the second wavelength selective switch in FIG. 2 are used to indicate the input terminals.
在波分复用的光网络***中，业务信息通常调制在不同波道上进行传输，不同波道传输的光信号的波长不同。当业务信息通过目标波段(如C波段)的波分复用光信号传输时，由于波分复用的光信号中各个波道相互影响，若波分复用的光信号中某一波道的功率变化较大，例如某一波道出现掉波或增波，在光网络***的光放大器以及光纤的受激拉曼散射效应等作用下，会导致光信号中剩余波道的光传输性能劣化，导致光网络***的性能不稳定，影响光网络***的性能。剩余波道为光信号中除功率出现变化的波道之外的波道。增波是指：当前光网络节点传输的光信号包括的波道数目，相较于位于该光网络节点前的相邻光网络节点传输的光信号包括的波道数目增加了。类似的，掉波是指：当前光网络节点传输的光信号包括的波道数目，相较于位于该光网络节点前的相邻光网络节点传输的光信号包括的波道数目减少了。In a wavelength division multiplexing optical network system, business information is usually modulated and transmitted on different channels, and the optical signals transmitted on different channels have different wavelengths. When business information is transmitted through wavelength division multiplexed optical signals in the target band (such as C-band), due to the mutual influence of each channel in the wavelength division multiplexed optical signal, if a certain channel in the wavelength division multiplexed optical signal Large power changes, such as a wave drop or gain in a certain channel, will cause the optical transmission performance of the remaining channels in the optical signal to deteriorate under the influence of the optical amplifier of the optical network system and the stimulated Raman scattering effect of the optical fiber. , leading to unstable performance of the optical network system and affecting the performance of the optical network system. The remaining channels are the channels in the optical signal other than the channels where the power changes. Wave increase means: the number of channels included in the optical signal transmitted by the current optical network node is increased compared to the number of channels included in the optical signal transmitted by the adjacent optical network node located in front of the optical network node. Similarly, wave dropping means that the number of channels included in the optical signal transmitted by the current optical network node is reduced compared to the number of channels included in the optical signal transmitted by the adjacent optical network node located in front of the optical network node.
当业务光信号中短波长的光信号掉波时，在受激拉曼散射效应的影响下，长波长的光信号接收到的短波长的光信号转移的功率会减小，导致长波长的光信号的功率相对于未出现掉波时的功率降低，短波长的光信号的功率相对于未出现掉波时的功率增加，从而导致剩余波信号的功率发生波动。类似的，在业务光信号中长波长的光信号掉波和业务光信号出现增波时，均会导致剩余波信号的功率发生波动。并且，光信号的功率发生转移的大小与波道位置、及同一光纤中的波道数目均相关。因此，当光网络***发生出现掉波或增波时，会导致受激拉曼散射效应引起的功率转移大小发生变化，导致剩余波道传输的剩余波信号的功率发生变化。When the short-wavelength optical signal in the service optical signal drops, under the influence of the stimulated Raman scattering effect, the power transferred by the short-wavelength optical signal received by the long-wavelength optical signal will be reduced, causing the long-wavelength optical signal to The power of the signal decreases relative to the power when no wave drop occurs, and the power of the short-wavelength optical signal increases relative to the power when no wave drop occurs, causing the power of the remaining wave signal to fluctuate. Similarly, when the long-wavelength optical signal in the service optical signal drops or the service optical signal increases, the power of the remaining wave signal will fluctuate. Moreover, the magnitude of the power transfer of the optical signal is related to the channel position and the number of channels in the same optical fiber. Therefore, when a wave drops or increases in an optical network system, the magnitude of the power transfer caused by the stimulated Raman scattering effect will change, resulting in a change in the power of the residual wave signal transmitted by the remaining channels.
当光网络***发生增波或掉波时，除了受激拉曼散射效应会带来剩余波信号功率的变化外，光网络***中光放大器还会出现瞬态过冲，该瞬态过冲也会导致剩余波信号在短时间内出现较大功率波动的现象。光放大器包括泵浦激光器。在光放大器的工作过程中，光放大器会检测光放大器的输入功率和输出功率，根据该输入功率和输出功率计算光放大器的实际增益值，并判断该实际增益值是否符合设置值，在实际增益值不符合设置值时，调节泵浦激光器输出的泵浦功率，以通过调节后的泵浦功率调节输出功率，使得光放大器的实际增益值符合设置值，从而进入稳定状态。但是，当光网络***发生增波或掉波时，光放大器的输入功率会发生变化，由于光放大器检测输入功率和泵浦调节的过程存在滞后，使得光放大器在保持下一个稳定状态之前，输出功率仍会出现上下冲的现象，仍会导致光网络***的性能不稳定，影响光网络***的性能。When a wave increases or drops in an optical network system, in addition to the change in residual wave signal power caused by the stimulated Raman scattering effect, a transient overshoot will also occur in the optical amplifier in the optical network system. This transient overshoot will also cause This will cause the residual wave signal to have large power fluctuations in a short period of time. Optical amplifiers include pump lasers. During the operation of the optical amplifier, the optical amplifier will detect the input power and output power of the optical amplifier, calculate the actual gain value of the optical amplifier based on the input power and output power, and determine whether the actual gain value meets the set value. When the value does not meet the set value, adjust the pump power output by the pump laser to adjust the output power through the adjusted pump power so that the actual gain value of the optical amplifier meets the set value, thereby entering a stable state. However, when the optical network system increases or drops waves, the input power of the optical amplifier will change. Due to the lag in the process of detecting the input power and pumping adjustment of the optical amplifier, the output of the optical amplifier will decrease before maintaining the next stable state. The power will still surge up and down, which will still lead to unstable performance of the optical network system and affect the performance of the optical network system.
并且，随着光通信网络容量不断提升，光网络***的频谱在波段上的切换，如光网络***的频谱由C波段扩展为C+L波段，以及，在光网络***中部署自动交换光网络(automatically switched optical network，ASON)和可重构光分插复用器站点等，均会使光网络***出现增波和掉波的情况。因此，消除光网络***的增波或掉波带来的光网络***的性能波动，是当前面临的重大难题。 Moreover, as the capacity of optical communication networks continues to increase, the spectrum of optical network systems switches between bands. For example, the spectrum of optical network systems is expanded from C-band to C+L band, and automatic switching optical networks are deployed in optical network systems. (automatically switched optical network, ASON) and reconfigurable optical add-drop multiplexer sites, etc., will cause wave addition and wave loss in the optical network system. Therefore, eliminating the performance fluctuation of the optical network system caused by wave addition or wave loss of the optical network system is a major problem currently faced.
本申请实施例提供了一种光网络节点10。如图3所示，光网络节点10包括目标光放大组件101和分光器件102。其中，分光器件102可以是分光器、耦合器或其他能够进行分光的光器件，本申请实施例对其不做具体限定。光网络节点10包括：光放大器。光放大器包括多个光放大组件，目标光放大组件101为多个光放大组件中的一个。例如，光放大器包括依次耦合的多个光放大组件，目标光放大组件101可以为该多个光放大组件中的第一个或最后一个，也可以为该第一个和最后一个之间的任一个。This embodiment of the present application provides an optical network node 10. As shown in FIG. 3 , the optical network node 10 includes a target optical amplification component 101 and an optical splitting device 102 . The spectroscopic device 102 may be a spectroscope, a coupler, or other optical device capable of splitting light, which is not specifically limited in the embodiment of the present application. The optical network node 10 includes: an optical amplifier. The optical amplifier includes multiple optical amplification components, and the target optical amplification component 101 is one of the multiple optical amplification components. For example, the optical amplifier includes a plurality of optical amplification components coupled in sequence. The target optical amplification component 101 can be the first or the last one of the multiple optical amplification components, or any one between the first and the last one. one.
分光器件102分别与目标光放大组件101的输入端和输出端耦合，使得目标光放大组件101的输出端与输入端之间形成回路。也即是，该回路包括从目标光放大组件101的输出端到目标光放大组件101的输入端之间经过的通路。分光器件102用于将来自目标光放大组件101的输出端的光信号分成多路光信号并输出，其中一路光信号通过回路传输到目标光放大组件101。该多路光信号中的其他路光信号可以根据光网络节点10的应用场景确定，该其他路光信号为多路光信号中除通过回路传输到目标光放大组件101的光信号外的光信号。可选地，该其他路光信号可以包括向该光网络节点10的下一光网络节点10提供的光信号。The spectroscopic device 102 is coupled to the input end and the output end of the target light amplification component 101 respectively, so that a loop is formed between the output end and the input end of the target light amplification component 101 . That is, the loop includes a path passing from the output end of the target light amplification component 101 to the input end of the target light amplification component 101 . The optical splitting device 102 is used to divide the optical signal from the output end of the target optical amplification component 101 into multiple optical signals and output them, wherein one optical signal is transmitted to the target optical amplification component 101 through a loop. The other optical signals in the multi-channel optical signals can be determined according to the application scenario of the optical network node 10. The other optical signals are the optical signals in the multi-channel optical signals except the optical signals transmitted to the target optical amplification component 101 through the loop. . Optionally, the other optical signals may include optical signals provided to the next optical network node 10 of the optical network node 10 .
由于目标光放大组件101的输出端与输入端之间存在回路，使得光网络节点10中形成了环形腔。该环形腔能够激发生成光信号，使得光网络节点10在该环形腔的作用下，能够自发地生成光信号。该生成的光信号即为控制光信号。也即是，光网络节点10能够通过目标光放大组件101在回路中生成控制光信号。Since there is a loop between the output end and the input end of the target optical amplification component 101, a ring cavity is formed in the optical network node 10. The ring cavity can be excited to generate optical signals, so that the optical network node 10 can spontaneously generate optical signals under the action of the ring cavity. The generated optical signal is the control optical signal. That is, the optical network node 10 can generate a control optical signal in the loop through the target optical amplification component 101 .
并且，由于该回路形成在目标光放大组件101的输出端和输入端之间，则控制光信号的功率可以基于目标光放大组件101接收的业务光信号的功率确定。目标光放大组件101中的泵浦激光器能够输出泵浦激光能量，控制光信号和目标光放大组件101接收到的业务光信号共享该泵浦能量。当光网络节点10接收到的光信号未出现增波或掉波时，控制光信号和业务光信号共享泵浦能量的状态处于稳定状态。当光网络节点10接收到的光信号出现掉波时，目标光放大组件101接收到的业务光信号的功率减小，此时，业务光信号耗费的泵浦能量减少，多余的泵浦能量可以转移到控制光信号上，使得控制光信号的功率增加。例如，如图4所示，当光网络节点10接收到的光信号未出现增波或掉波时，业务光信号的波长占满通道，控制光信号的功率与各个波长的业务光信号的功率基本相等。如图5所示，光网络节点的光信号包括的波道数目相较于图4所示的波道数目减少了，即光网络节点10接收到的光信号出现了掉波，此时，控制光信号的功率大于剩余波道中业务光信号的功率。其中，该图4和图5中纵坐标表示光信号的功率，横坐标表示光信号的波长。Moreover, since the loop is formed between the output end and the input end of the target optical amplification component 101, the power of the control optical signal can be determined based on the power of the service optical signal received by the target optical amplification component 101. The pump laser in the target optical amplification component 101 can output pump laser energy, and the control optical signal and the service optical signal received by the target optical amplification component 101 share the pump energy. When the optical signal received by the optical network node 10 does not increase or drop, the state in which the control optical signal and the service optical signal share pump energy is in a stable state. When the optical signal received by the optical network node 10 drops, the power of the service optical signal received by the target optical amplification component 101 is reduced. At this time, the pump energy consumed by the service optical signal is reduced, and the excess pump energy can be transferred to the control light signal, causing the power of the control light signal to increase. For example, as shown in Figure 4, when the optical signal received by the optical network node 10 does not increase or drop, the wavelength of the service optical signal occupies the channel, and the power of the control optical signal and the power of the service optical signal of each wavelength are Basically equal. As shown in Figure 5, the number of channels included in the optical signal of the optical network node is reduced compared to the number of channels shown in Figure 4, that is, the optical signal received by the optical network node 10 has dropped. At this time, the control The power of the optical signal is greater than the power of the service optical signal in the remaining channels. The ordinate in Figures 4 and 5 represents the power of the optical signal, and the abscissa represents the wavelength of the optical signal.
类似的，当光网络节点10接收到的光信号出现增波时，目标光放大组件101接收到的业务光信号的功率增加，此时，业务光信号耗费的泵浦能量增加，导致分到控制光信号的泵浦能量减少，使得控制光信号的功率减少。因此，控制光信号的功率可以基于目标光放大组件101接收的业务光信号的功率确定。其中，泵浦能量转移到光信号是指泵浦光能量通过能级跃迁等效应进行能量转化实现。Similarly, when the optical signal received by the optical network node 10 increases, the power of the service optical signal received by the target optical amplification component 101 increases. At this time, the pump energy consumed by the service optical signal increases, resulting in distribution control. The pump energy of the optical signal is reduced, which reduces the power of the controlled optical signal. Therefore, the power of the control optical signal may be determined based on the power of the service optical signal received by the target optical amplification component 101 . Among them, the transfer of pump energy to optical signals refers to the energy conversion of pump light energy through effects such as energy level transitions.
在业务光信号出现掉波时，若光网络节点10中生成有控制光信号，在受激拉曼散射效应的影响下，短波长的业务光信号除了向长波长的业务光信号进行功率转移，还可以向波长比该短波长的业务光信号长的控制光信号进行功率转移，类似的，长波长的业务光信号还可以接收波长比该长波长的业务光信号短的控制光信号转移的功率。这样一来，长波长的业务光信号的功率相对于未出现掉波时的功率降低量减小，短波长的业务光信号的功率相对于未出现掉波时的功率增加量也减小，达到了减小甚至消除剩余波信号功率发生波动的幅度的效果，有助于保持光网络***的性能的稳定。类似的，在业务光信号出现增波时，通过控制光信号 也能够达到类似的效果，此处对其不再赘述。When the service optical signal drops, if a control optical signal is generated in the optical network node 10, under the influence of the stimulated Raman scattering effect, the short-wavelength service optical signal will transfer power to the long-wavelength service optical signal. Power can also be transferred to a control optical signal with a longer wavelength than the short-wavelength service optical signal. Similarly, the long-wavelength service optical signal can also receive the transferred power of a control optical signal with a shorter wavelength than the long-wavelength service optical signal. . In this way, the power of the long-wavelength service optical signal is reduced compared to the power decrease when no wave drop occurs, and the power of the short-wavelength service optical signal is also reduced relative to the power increase when no wave drop occurs, reaching In order to reduce or even eliminate the effect of fluctuations in residual wave signal power, it helps to maintain the stability of the performance of the optical network system. Similarly, when the service optical signal increases, by controlling the optical signal Similar effects can also be achieved, which will not be described again here.
图6为当业务光信号发生掉波，生成控制光信号和未生成控制光信号两种情况下，因受激拉曼散射效应导致的剩余波信号功率波动的示意图。图6中粗实线表示生成控制光信号的情况下，因受激拉曼散射效应导致的剩余波信号功率波动的情况。图6中粗虚线表示未生成控制光信号的情况下，因受激拉曼散射效应导致的剩余波信号功率波动的情况。根据图6可以看到，在生成控制光信号的情况下，由于控制光信号的自适应调整，补偿了掉波时业务光信号的功率变化，使得剩余波信号的功率波动程度显著降低，维持了掉波时光网络***的性能稳定。Figure 6 is a schematic diagram of the residual wave signal power fluctuation caused by the stimulated Raman scattering effect when the service optical signal is dropped and the control optical signal is generated and the control optical signal is not generated. The thick solid line in Figure 6 represents the power fluctuation of the residual wave signal caused by the stimulated Raman scattering effect when a control light signal is generated. The thick dotted line in Figure 6 represents the power fluctuation of the residual wave signal caused by the stimulated Raman scattering effect when no control light signal is generated. According to Figure 6, it can be seen that when the control optical signal is generated, the adaptive adjustment of the control optical signal compensates for the power change of the service optical signal when the wave is dropped, so that the power fluctuation of the remaining wave signal is significantly reduced, maintaining the The performance of the optical network system is stable even if the wave is dropped.
在业务光信号出现掉波时，若光网络节点10中生成有控制光信号，目标光放大组件101能够通过能级跃迁等效应，将泵浦光能量转化为业务光信号和控制光信号的能量，使得控制光信号能量增加。控制光信号能量的增加弥补了业务光信号光由于掉波导致的能量降低，使得控制光信号的功率与掉波后业务光信号的功率的总和，相较于掉波后业务光信号的功率，更接近或等于掉波前业务光信号的功率，因此，减小甚至消除了目标光放大组件101输入端光功率的变化程度，有助于维持目标光放大组件101输入端的功率稳定，进而消除光放瞬态效应。图7为当业务光信号发生掉波，且未生成控制光信号时，目标光放大组件101的光放瞬态效应的示意图。图8为当业务光信号发生掉波，生成控制光信号时，目标光放大组件101的光放瞬态效应。图7和图8中出现的尖峰表示光放大器的瞬态过冲。根据图7和图8的对比可以看到，通过控制光信号的自适应调整，较大幅度地减小了目标光放大组件101的光放瞬态过冲。When the service optical signal drops, if a control optical signal is generated in the optical network node 10, the target optical amplification component 101 can convert the pump light energy into the energy of the service optical signal and the control optical signal through energy level transition and other effects. , causing the energy of the control light signal to increase. The increase in the energy of the control optical signal makes up for the energy decrease of the service optical signal due to wave drop, so that the sum of the power of the control optical signal and the power of the service optical signal after the wave drop is compared with the power of the service optical signal after the wave drop. is closer to or equal to the power of the service optical signal before wave-dropping. Therefore, the change degree of the optical power at the input end of the target optical amplification component 101 is reduced or even eliminated, which helps to maintain the stability of the power at the input end of the target optical amplification component 101, thereby eliminating the optical Release transient effects. FIG. 7 is a schematic diagram of the transient effect of the optical amplification of the target optical amplification component 101 when the service optical signal drops and no control optical signal is generated. Figure 8 shows the optical amplifier transient effect of the target optical amplification component 101 when the service optical signal drops and a control optical signal is generated. The spikes appearing in Figures 7 and 8 represent transient overshoot of the optical amplifier. It can be seen from the comparison between FIG. 7 and FIG. 8 that by controlling the adaptive adjustment of the optical signal, the optical amplifier transient overshoot of the target optical amplification component 101 is greatly reduced.
由上可知，通过在目标光放大组件101的输入端和输出端之间形成回路，使得光网络节点10能够通过目标光放大组件101在回路中生成控制光信号，在光网络节点10出现增波或掉波时，该控制光信号能够对输入目标光放大组件101的光信号的功率进行调节，能够解决因受激拉曼散射效应带来的功率转移等导致剩余波信号功率波动的问题，以及目标光放大组件101的瞬态过冲问题，减轻了增波或掉波对光网络***的性能的影响。It can be seen from the above that by forming a loop between the input end and the output end of the target optical amplification component 101, the optical network node 10 can generate a control optical signal in the loop through the target optical amplification component 101, and increased waves appear at the optical network node 10. Or when the wave is dropped, the control optical signal can adjust the power of the optical signal input to the target optical amplification component 101, and can solve the problem of residual wave signal power fluctuation caused by power transfer caused by the stimulated Raman scattering effect, and The transient overshoot problem of the target optical amplification component 101 reduces the impact of wave addition or wave drop on the performance of the optical network system.
并且，在光放大器的输入端和输出端之间形成回路后，目标光放大组件101就能够基于回路生成控制光信号，控制光信号的功率基于目标光放大组件101接收的业务光信号的功率确定，控制光信号的能量来自于目标光放大组件101释放的泵浦能量，使得该控制光信号无需通过外部注入，生成控制光信号的过程无需根据光网络节点10是否出现增波或掉波执行，且该过程也无需通过其他装置和软件进行控制。因此，该控制光信号的功率调节过程能够看成是自适应过程，该自适应过程能够实现功率的快速调节，能够适用于各种增波和掉波场景，且能够节省对光信号进行控制的成本，减小光网络节点10的体积。Moreover, after a loop is formed between the input end and the output end of the optical amplifier, the target optical amplification component 101 can generate a control optical signal based on the loop, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component 101 , the energy of the control optical signal comes from the pump energy released by the target optical amplification component 101, so that the control optical signal does not need to be injected from the outside, and the process of generating the control optical signal does not need to be executed according to whether the optical network node 10 has a wave increase or a wave drop. And this process does not need to be controlled by other devices and software. Therefore, the power adjustment process of controlling the optical signal can be regarded as an adaptive process. This adaptive process can realize rapid adjustment of power, can be applicable to various wave addition and wave drop scenarios, and can save the time of controlling the optical signal. cost and reduce the size of the optical network node 10.
需要说明的是，目标光放大组件101的输出端与输入端之间可以形成有一条或多条回路，光网络节点10可以通过目标光放大组件101在该一条或多条回路中的每条回路中生成控制光信号。且光网络节点10通过目标光放大组件101在每条回路中生成控制光信号的实现方式，均可以参考本申请实施例中的相关描述，此处不再赘述。It should be noted that one or more loops may be formed between the output end and the input end of the target optical amplification component 101, and the optical network node 10 may connect to each of the one or more loops through the target optical amplification component 101. Generate control light signals. In addition, for the implementation of the optical network node 10 generating the control optical signal in each loop through the target optical amplification component 101, reference can be made to the relevant descriptions in the embodiments of the present application, which will not be described again here.
其中，生成的控制光信号可以为包括多个波长的控制光信号。在一种实现方式中，控制光信号包括：第一控制光信号和/或第二控制光信号。第一控制光信号的波长小于目标光放大组件101输出的所有业务光信号的波长。第二控制光信号的波长大于目标光放大组件101输出的所有业务光信号的波长。此时，控制光信号不占用业务光信号波长通道，分布在业务光信号的波长两端，不占用业务光信号的波长信道，不会影响光网络***的性能。The generated control light signal may be a control light signal including multiple wavelengths. In one implementation, the control light signal includes: a first control light signal and/or a second control light signal. The wavelength of the first control optical signal is smaller than the wavelength of all service optical signals output by the target optical amplification component 101 . The wavelength of the second control optical signal is greater than the wavelength of all service optical signals output by the target optical amplification component 101 . At this time, the control optical signal does not occupy the wavelength channel of the service optical signal and is distributed at both ends of the wavelength of the service optical signal. It does not occupy the wavelength channel of the service optical signal and will not affect the performance of the optical network system.
并且，第一控制光信号和第二控制光信号的波长可以根据应用需求进行设置。例如，由 于控制光信号的能量来自于目标光放大组件101释放的泵浦能量，控制光信号的波长与业务光信号的波长越靠近时，控制光信号对功率的自适应调整效果越好，减轻增波或掉波对光网络***性能的影响的能力越大，因此，可以设置第一控制光信号的波长稍小于所有业务光信号的波长，设置第二控制光信号的波长稍大于所有业务光信号的波长。例如，当相邻波道传输的光信号的波长相差0.4纳米时，可以使用波道C(1)-C(120)传输业务光信号，使用波道C(0)传输第一控制光信号，使用波道C(121)传输第二控制光信号，其中，波道C(i+1)和波道C(i-1)均为波道C(i)的相邻波道。Moreover, the wavelengths of the first control optical signal and the second control optical signal can be set according to application requirements. For example, by Since the energy of the control optical signal comes from the pump energy released by the target optical amplification component 101, the closer the wavelength of the control optical signal is to the wavelength of the service optical signal, the better the adaptive adjustment effect of the power of the control optical signal will be, reducing wave increase. Or the greater the ability of wave drop to affect the performance of the optical network system, therefore, you can set the wavelength of the first control optical signal to be slightly smaller than the wavelength of all service optical signals, and set the wavelength of the second control optical signal to be slightly larger than the wavelength of all service optical signals. wavelength. For example, when the wavelengths of optical signals transmitted by adjacent channels differ by 0.4 nanometers, channels C(1)-C(120) can be used to transmit the service optical signals, and channel C(0) can be used to transmit the first control optical signal. The second control optical signal is transmitted using channel C (121), where channel C (i+1) and channel C (i-1) are both adjacent channels of channel C (i).
需要说明的是，控制光信号还可以具有其他波长。例如，控制光信号的波长还可以小于业务光信号的最大波长，和/或，大于业务光信号的最小波长。并且，生成的控制光信号还可以包括多种波长均大于所有业务光信号的波长的控制光信号，以及，还可以包括多种波长均小于所有业务光信号的波长的控制光信号，本申请实施例对其不做具体限定。It should be noted that the control optical signal can also have other wavelengths. For example, the wavelength of the control optical signal may be smaller than the maximum wavelength of the service optical signal, and/or be larger than the minimum wavelength of the service optical signal. Moreover, the generated control optical signals may also include control optical signals with multiple wavelengths greater than the wavelengths of all service optical signals, and may also include control optical signals with multiple wavelengths smaller than the wavelengths of all service optical signals. This application implements The example does not specifically limit it.
可选地，当控制光信号包括多种波长的控制光信号时，例如控制光信号包括第一控制光信号和第二控制光信号时，如图9所示，光网络节点10还包括：激射能力调整器103。激射能力调整器103的输入端与分光器件102的输出端耦合，且激射能力调整器103位于回路中。Optionally, when the control optical signal includes control optical signals of multiple wavelengths, for example, when the control optical signal includes a first control optical signal and a second control optical signal, as shown in FIG. 9 , the optical network node 10 further includes: a laser; Shooting capacity adjuster 103. The input end of the lasing power adjuster 103 is coupled to the output end of the spectroscopic device 102, and the lasing power adjuster 103 is located in the loop.
在一种实现方式中，激射能力调整器103可以位于回路中，且位于光网络节点10与其他光网络节点传输光信号的传输通路外，即激射能力调整器103位于回路中不属于该传输通路的部分。光网络节点和其他光网络节点均用于在光网络***中传输业务光信号，即光网络***中除光网络节点外的光网络节点均为其他光网络节点。这样一来，由于激射能力调整器103不设置在光网络节点10与其他光网络节点传输光信号的传输通路中，能够减小对业务信号的干扰，保证光网络***的性能。In one implementation, the lasing capability adjuster 103 may be located in the loop and outside the transmission path through which the optical network node 10 and other optical network nodes transmit optical signals. That is, the lasing capability adjuster 103 located in the loop does not belong to the transmission path. part of the transmission path. Optical network nodes and other optical network nodes are used to transmit business optical signals in the optical network system. That is, the optical network nodes in the optical network system except the optical network nodes are all other optical network nodes. In this way, since the lasing capability adjuster 103 is not disposed in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, interference to business signals can be reduced and the performance of the optical network system can be ensured.
激射能力调整器103用于调整控制光信号的激射能力。控制光信号的激射能力指用于形成控制光信号的分子束被辐射场激励跃迁到下一能级，发生受激发射生成控制光信号的能力。在该光网络节点10中，辐射场激励主要指来自目标光放大组件101中泵浦光能量的激励。调整控制光信号的激射能力的目的，是对不同波长的控制光信号的激射能力进行平衡，使得用于形成不同波长的控制光信号的分子受激被发射的几率基本相同。这样一来，在业务光信号出现增波或掉波时，泵浦能量能够较均衡地向多个波长的控制光信号进行转移，使得多个波长的控制光信号的功率基本相等。例如，当控制光信号包括第一控制光信号和第二控制光信号时，通过激射能力调整器103对该第一控制光信号和第二控制光信号的激射能力进行调节，使得第一控制光信号和第二控制光信号的功率能够基本相等。此时，第一控制光信号和第二控制光信号对增波或掉波引起的功率波动的弥补能力基本相同，能够较大程度地维持光网络***的性能稳定性。The lasing capability adjuster 103 is used to adjust the lasing capability of the control light signal. The lasing ability of controlled optical signals refers to the ability of the molecular beam used to form the controlled optical signals to be excited by the radiation field and jump to the next energy level, where stimulated emission occurs to generate the controlled optical signals. In the optical network node 10, the radiation field excitation mainly refers to the excitation from the pump light energy in the target optical amplification component 101. The purpose of adjusting the lasing ability of the control light signal is to balance the lasing ability of the control light signal of different wavelengths, so that the molecules used to form the control light signal of different wavelengths have basically the same probability of being stimulated and emitted. In this way, when the service optical signal increases or drops, the pump energy can be transferred to the control optical signals of multiple wavelengths in a relatively even manner, so that the power of the control optical signals of multiple wavelengths is basically equal. For example, when the control light signal includes a first control light signal and a second control light signal, the lasing capabilities of the first control light signal and the second control light signal are adjusted by the lasing capability adjuster 103, so that the first The power of the control light signal and the second control light signal can be substantially equal. At this time, the first control optical signal and the second control optical signal have basically the same ability to compensate for power fluctuations caused by wave addition or wave drop, and can maintain the performance stability of the optical network system to a large extent.
并且，调整作用还可以包括在平衡不同波长的控制信号的激射能力的基础上，增大或减小控制光信号的激射能力。例如，当控制光信号包括第一控制光信号和第二控制光信号时，若业务光信号出现掉波，激射能力调整器103不仅用于平衡第一控制光信号和第二控制光信号的激射能力，还用于增大第一控制光信号和第二控制光信号的激射能力，使得因掉波而多余的泵浦光能量能够尽量多地向第一控制光信号和第二控制光信号转移。若业务光信号出现增波，激射能力调整器103不仅用于平衡第一控制光信号和第二控制光信号的激射能力，还用于减小第一控制光信号和第二控制光信号的激射能力，使得泵浦光能量能够向增加的业务光信号转移。Moreover, the adjustment function may also include increasing or decreasing the lasing capability of the control optical signal on the basis of balancing the lasing capabilities of the control signals of different wavelengths. For example, when the control optical signal includes a first control optical signal and a second control optical signal, if the service optical signal drops, the lasing capability adjuster 103 is not only used to balance the first control optical signal and the second control optical signal. The lasing ability is also used to increase the lasing ability of the first control optical signal and the second control optical signal, so that the excess pump light energy due to wave drop can be directed to the first control optical signal and the second control optical signal as much as possible. Optical signal transfer. If the service optical signal increases, the lasing capability adjuster 103 is not only used to balance the lasing capabilities of the first control optical signal and the second control optical signal, but is also used to reduce the first control optical signal and the second control optical signal. The lasing capability enables the pump light energy to be transferred to increased business optical signals.
在一种可实现方式中，激射能力调整器103可以为光放大器。此时，该激射能力调整器103还用于对接收到的光信号进行放大。本申请实施例对该光放大器的类型不做限定，只要 该光放大器能够调整控制光信号的激射能力，且能够对信号进行放大即可。例如，该光放大器可以为半导体光放大器(semiconductor opticai amplifier，SOA)，或者，该光放大器可以为光纤放大器，如掺铒光纤放大器(erbium-doped optical fiber amplifier，EDFA)。In an implementation manner, the lasing capability adjuster 103 may be an optical amplifier. At this time, the lasing capability adjuster 103 is also used to amplify the received optical signal. The embodiment of this application does not limit the type of the optical amplifier, as long as The optical amplifier can adjust and control the lasing ability of the optical signal, and can amplify the signal. For example, the optical amplifier may be a semiconductor optical amplifier (semiconductor optic amplifier, SOA), or the optical amplifier may be a fiber amplifier, such as an erbium-doped optical fiber amplifier (EDFA).
或者，激射能力调整器103可以为其他能够调整激射能力的器件。例如，激射能力调整器103还可以为是饱和吸收体等无源器件。Alternatively, the lasing capability adjuster 103 may be other devices capable of adjusting lasing capability. For example, the lasing capability adjuster 103 may also be a passive device such as a saturable absorber.
可选地，如图10所示，光网络节点10还可以包括：光衰减器104。光衰减器104的输入端与分光器件102的输出端耦合，且光衰减器104位于回路中。光衰减器104用于对接收到的光信号的光功率进行衰减，以减小光信号的损耗。在光网络节点10中设置光衰减器104的目的，是为了保证光信号的增益能够大于光信号的损耗，使得在回路中能够生成控制光信号。在一种可实现方式中，该光衰减器104可以为可变光衰减器(variable optical attenuator，VOA)。Optionally, as shown in Figure 10, the optical network node 10 may also include: an optical attenuator 104. The input end of the optical attenuator 104 is coupled with the output end of the optical splitting device 102, and the optical attenuator 104 is located in the loop. The optical attenuator 104 is used to attenuate the optical power of the received optical signal to reduce the loss of the optical signal. The purpose of arranging the optical attenuator 104 in the optical network node 10 is to ensure that the gain of the optical signal can be greater than the loss of the optical signal, so that a control optical signal can be generated in the loop. In an implementation manner, the optical attenuator 104 may be a variable optical attenuator (VOA).
在一种实现方式中，光衰减器104可以位于回路中，且位于光网络节点10与其他光网络节点传输光信号的传输通路外，即光衰减器104位于回路中不属于该传输通路的部分。这样一来，由于光衰减器104不设置在光网络节点10与其他光网络节点传输光信号的传输通路中，能够减小对业务信号的干扰，保证光网络***的性能。需要说明的是，当光衰减器104和激射能力调整器103均位于回路中不属于该传输通路的部分时，激射能力调整器103的输入端可以通过光衰减器104与分光器件102的输出端耦合。In one implementation, the optical attenuator 104 may be located in the loop and outside the transmission path through which the optical network node 10 and other optical network nodes transmit optical signals. That is, the optical attenuator 104 is located in a part of the loop that does not belong to the transmission path. . In this way, since the optical attenuator 104 is not disposed in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, interference to business signals can be reduced and the performance of the optical network system can be ensured. It should be noted that when the optical attenuator 104 and the lasing capability adjuster 103 are located in a part of the loop that does not belong to the transmission path, the input end of the lasing capability adjuster 103 can pass through the optical attenuator 104 and the spectroscopic device 102. Output coupling.
回路中来自分光器件的光信号是目标光放大组件101输出的光信号，该光信号包括控制光信号和业务光信号。控制光信号用于对输入目标光放大组件101的业务光信号的功率进行调节，该控制光信号需要在回路中循环。但若业务光信号经过回路再进入目标光放大组件101，会对光网络***的性能产生影响。因此，需要从回路中来自分光器件的光信号中，滤出控制光信号，滤除业务光信号，并向目标光放大组件101提供该控制光信号。该滤除业务光信号的实现方式有多种，下面以以下两种实现方式为例进行说明：The optical signal from the optical splitter in the loop is the optical signal output by the target optical amplification component 101, and the optical signal includes a control optical signal and a service optical signal. The control optical signal is used to adjust the power of the service optical signal input to the target optical amplification component 101, and the control optical signal needs to circulate in the loop. However, if the service optical signal passes through the loop and then enters the target optical amplification component 101, the performance of the optical network system will be affected. Therefore, it is necessary to filter out the control optical signal and the service optical signal from the optical signal from the optical splitting device in the loop, and provide the control optical signal to the target optical amplification component 101 . There are many ways to implement the filtering of service optical signals. The following two implementation ways are used as examples for explanation:
在滤出控制光信号的第一种实现方式中，光网络节点10还可以包括：滤波器件。滤波器件的输入端与分光器件102的输出端耦合，且滤波器件位于回路中。滤波器件用于从来自分光器件的光信号中，滤出控制光信号，并向目标光放大组件101提供控制光信号。其中，滤波器件可以为任何具有滤波功能的光器件。例如，该滤波器件105可以为带通滤波器等滤波器(filter)，或者，可以为波长选择器。波长选择器可以为波长选择开关或阵列波导光栅(arrayed waveguide grating，AWG)等光器件。并且，滤波器件在光网络节点10中的位置可以根据应用需求进行设置。下面以以下几种实现方式为例，分别对其进行说明：In the first implementation manner of filtering out the control optical signal, the optical network node 10 may also include: a filter device. The input end of the filter device is coupled to the output end of the spectroscopic device 102, and the filter device is located in the loop. The filter device is used to filter out the control light signal from the light signal from the spectroscopic device and provide the control light signal to the target light amplification component 101 . Wherein, the filter device can be any optical device with filtering function. For example, the filter device 105 may be a filter such as a bandpass filter, or may be a wavelength selector. The wavelength selector can be an optical device such as a wavelength selective switch or an arrayed waveguide grating (AWG). Moreover, the position of the filter device in the optical network node 10 can be set according to application requirements. Let's take the following implementation methods as examples to explain them respectively:
在第一种实现方式中，如图11所示，滤波器件105可以位于回路中，且位于光网络节点10与其他光网络节点传输光信号的传输通路中，即滤波器件105位于回路中属于该传输通路的部分。此时，由于输入滤波器件105的信号包括来自其他光网络节点的光信号和来自分光器件的光信号，滤波器件105可以具有多个输入端，该多个输入端包括：与其他光网络节点的输出端耦合的输入端，及与分光器件102的输出端耦合的输入端。由于该滤波器件105的输入端还与其他光网络节点的输出端耦合，则滤波器件105还用于从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向目标光放大组件101提供滤出的业务光信号。In the first implementation, as shown in Figure 11, the filter device 105 can be located in the loop and in the transmission path between the optical network node 10 and other optical network nodes to transmit optical signals. That is, the filter device 105 located in the loop belongs to the part of the transmission path. At this time, since the signals input to the filter device 105 include optical signals from other optical network nodes and optical signals from the optical splitting device, the filter device 105 may have multiple input terminals, and the multiple input terminals include: an input terminal coupled to the output terminal, and an input terminal coupled to the output terminal of the spectroscopic device 102 . Since the input end of the filter device 105 is also coupled with the output end of other optical network nodes, the filter device 105 is also used to filter out the service optical signal of the specified wavelength from the optical signals from other optical network nodes, and transmit it to the target optical signal. Amplification component 101 provides filtered traffic light signals.
可选的，在该实现方式中，滤波器件105的输入端还可以与位于回路外的其他光器件的输出端耦合，该其他光器件可以提供光信号。则滤波器件105还用于从来自其他光器件的光信号中，滤出指定波长的业务光信号，并向目标光放大组件101提供滤出的业务光信号。其中，指定波长的业务光信号为光网络***实现业务所需的光信号。需要说明的是，来自其他 光器件的光信号可以包括以下一种或多种：由其他光器件生成的光信号，及其他光器件接收到的光信号。例如，该其他光器件可以为该光网络节点10中的光器件(如光网络单元(optical network unit，ONU))。此时，来自其他光器件的光信号为ONU生成的光信号。又例如，该其他光器件可以为其他光网络节点。此时，来自其他光器件的光信号为其他光网络节点接收到的光信号，且当其他光网络节点包括能够生成光信号的光器件时，来自其他光器件的光信号还包括该光器件生成的光信号。其中，其他光网络节点和位于回路外且属于该光网络节点10的其他光器件，均可以统称为位于回路外的其他光器件。Optionally, in this implementation, the input end of the filter device 105 can also be coupled with the output end of other optical devices located outside the loop, and the other optical devices can provide optical signals. The filter device 105 is also used to filter out the service optical signal of a specified wavelength from the optical signals from other optical devices, and provide the filtered service optical signal to the target optical amplification component 101. Among them, the service optical signal of the specified wavelength is the optical signal required by the optical network system to realize the service. It should be noted that from other The optical signal of the optical device may include one or more of the following: optical signals generated by other optical devices, and optical signals received by other optical devices. For example, the other optical device may be an optical device in the optical network node 10 (such as an optical network unit (ONU)). At this time, the optical signals from other optical devices are the optical signals generated by the ONU. For another example, the other optical devices may be other optical network nodes. At this time, the optical signals from other optical devices are optical signals received by other optical network nodes, and when other optical network nodes include optical devices capable of generating optical signals, the optical signals from other optical devices also include those generated by the optical device. light signal. Among them, other optical network nodes and other optical devices located outside the loop and belonging to the optical network node 10 can be collectively referred to as other optical devices located outside the loop.
在第二种实现方式中，如图12所示，滤波器件105可以位于回路中，且位于光网络节点10与其他光网络节点传输光信号的传输通路外，即滤波器件105位于回路中不属于该传输通路的部分。此时，滤波器件105可以具有至少一个输入端，该至少一个输入端包括：与分光器件102的输出端耦合的输入端。可选的，该滤波器件105还可以包括与其他光器件的输出端耦合的输入端。当滤波器件105还与其他光器件的输出端耦合时，滤波器件105还用于从来自其他光器件的光信号中，滤出指定波长的业务光信号，并向目标光放大组件101提供滤出的业务光信号。其中，其他光器件可以为位于回路外的光器件。例如，其他光器件包括其他光网络节点或该光网络节点10中的光器件(如ONU)。In the second implementation, as shown in Figure 12, the filter device 105 can be located in the loop and outside the transmission path of the optical signal transmitted between the optical network node 10 and other optical network nodes. That is, the filter device 105 is located in the loop and does not belong to the loop. part of the transmission path. At this time, the filter device 105 may have at least one input terminal, and the at least one input terminal includes: an input terminal coupled with the output terminal of the spectroscopic device 102 . Optionally, the filter device 105 may also include an input terminal coupled to the output terminals of other optical devices. When the filter device 105 is also coupled with the output end of other optical devices, the filter device 105 is also used to filter out the service optical signal of the specified wavelength from the optical signals from other optical devices, and provide the filtered out signal to the target optical amplification component 101. business light signal. Among them, other optical devices may be optical devices located outside the loop. For example, other optical devices include other optical network nodes or optical devices (such as ONUs) in the optical network node 10 .
由于该滤波器位于光网络节点10与其他光网络节点传输光信号的传输通路外，则该滤波器件105输出的光信号可以通过具有多个输入端，且能够通过输出端输出来自该多个输入端的光信号的光器件实现。可选地，该光器件可以为波分复用器或波长选择器等光器件。Since the filter is located outside the transmission path of optical signals between the optical network node 10 and other optical network nodes, the optical signal output by the filter device 105 can have multiple input terminals, and can be output from the multiple input terminals through the output terminal. The optical signal at the end is realized by optical devices. Optionally, the optical device may be an optical device such as a wavelength division multiplexer or a wavelength selector.
例如，如图13所示，光网络节点10还可以包括：第一波分复用器106。第一波分复用器106的输入端与滤波器件105的输出端耦合。且第一波分复用器106的输入端还用于与其他光器件的输出端耦合。第一波分复用器106的输出端与目标光放大组件101的输入端耦合。且第一波分复用器106可以位于光网络节点10与其他光网络节点传输光信号的传输通路中。当第一波分复用器106的输入端与滤波器件105的输出端耦合时，第一波分复用器106用于向目标光放大组件101提供来自滤波器件105的控制光信号。当第一波分复用器106的输入端还与其他光器件的输出端耦合时，第一波分复用器106还用于向目标光放大组件101提供来自其他光器件的业务光信号。其中，其他光器件为位于回路外的光器件。例如，其他光器件可以为其他光网络节点或当前光网络节点10中的光器件(如ONU)。For example, as shown in Figure 13, the optical network node 10 may further include: a first wavelength division multiplexer 106. The input terminal of the first wavelength division multiplexer 106 is coupled with the output terminal of the filter device 105 . And the input terminal of the first wavelength division multiplexer 106 is also used to couple with the output terminals of other optical devices. The output end of the first wavelength division multiplexer 106 is coupled with the input end of the target optical amplification component 101 . And the first wavelength division multiplexer 106 may be located in a transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. When the input end of the first wavelength division multiplexer 106 is coupled to the output end of the filter device 105, the first wavelength division multiplexer 106 is used to provide the control optical signal from the filter device 105 to the target optical amplification component 101. When the input end of the first wavelength division multiplexer 106 is also coupled with the output end of other optical devices, the first wavelength division multiplexer 106 is also used to provide the target optical amplification component 101 with service optical signals from other optical devices. Among them, other optical devices are optical devices located outside the loop. For example, other optical devices may be other optical network nodes or optical devices in the current optical network node 10 (such as ONU).
此时，光网络节点还可以包括：第一波长选择器。第一波长选择器的输入端用于与其他光网络节点的输出端耦合。第一波长选择器的输出端与第一波分复用器的输入端耦合。第一波长选择器用于从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向第一波分复用器提供滤出的业务光信号。此时，第一波分复用器用于将滤出的控制光信号和业务光信号汇聚至目标光放大组件101。在一种实现方式中，第一波长选择器的功能可以通过图2中第一波长选择开关或第二波长选择开关实现。例如，如图14所示，图14为通过第二波长选择开关实现第一波长选择器的功能的示意图。At this time, the optical network node may also include: a first wavelength selector. The input terminal of the first wavelength selector is used for coupling with the output terminals of other optical network nodes. The output terminal of the first wavelength selector is coupled to the input terminal of the first wavelength division multiplexer. The first wavelength selector is used to filter out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provide the filtered service optical signals to the first wavelength division multiplexer. At this time, the first wavelength division multiplexer is used to converge the filtered control optical signal and service optical signal to the target optical amplification component 101 . In an implementation manner, the function of the first wavelength selector can be implemented by the first wavelength selective switch or the second wavelength selective switch in FIG. 2 . For example, as shown in FIG. 14 , FIG. 14 is a schematic diagram of realizing the function of the first wavelength selector through the second wavelength selective switch.
可选的，第一波分复用器106的功能也可以通过其他光器件实现。例如，可以通过波长选择器实现。该波长选择器的输入端与滤波器件105的输出端耦合。且该波长选择器的输入端还用于与其他光器件的输出端耦合。该波长选择器的输出端与目标光放大组件101的输入端耦合。并且，该波长选择器可以位于光网络节点10与其他光网络节点传输光信号的传输通路中。此时，该波长选择器还用于从来自其他光器件的光信号中，滤出指定波长的业务光信号，并向目标光放大组件101提供滤出的业务光信号。其中，其他光器件为位于回路外的光器件。例如，其他光器件可以为其他光网络节点或当前光网络节点10中的光器件(如ONU)。 作为一种示例，该波长选择器可以为波长选择开关或阵列波导光栅等光器件。Optionally, the function of the first wavelength division multiplexer 106 can also be implemented through other optical devices. This can be achieved, for example, with a wavelength selector. The input terminal of the wavelength selector is coupled with the output terminal of the filter device 105 . And the input end of the wavelength selector is also used to couple with the output end of other optical devices. The output end of the wavelength selector is coupled with the input end of the target light amplifying component 101 . Moreover, the wavelength selector may be located in a transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. At this time, the wavelength selector is also used to filter out the service optical signal of a specified wavelength from the optical signal from other optical devices, and provide the filtered service optical signal to the target optical amplification component 101. Among them, other optical devices are optical devices located outside the loop. For example, other optical devices may be other optical network nodes or optical devices in the current optical network node 10 (such as ONU). As an example, the wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating.
并且，该波长选择器的功能，可以通过未在目标光放大组件101的输入端和输出端之间形成回路时，该光网络节点10中原有的光器件实现。例如，如图2所示，光网络节点10包括第一波长选择开关和第二波长选择开关，波长选择器的功能可以通过第一波长选择开关或第二波长选择开关实现。其中，图15是通过第二波长选择开关实现第一波分复用器的功能，通过第一波长选择开关实现第一波长选择器的功能的示意图。当使用原有的光器件实现波长选择器的功能时，由于无需向光网络节点10中添加新的器件，减少了对光网络节点10传输的光信号产生干扰的几率，能够有效保证通信网络的性能。Moreover, the function of the wavelength selector can be realized by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 . For example, as shown in FIG. 2 , the optical network node 10 includes a first wavelength selective switch and a second wavelength selective switch. The function of the wavelength selector can be implemented by the first wavelength selective switch or the second wavelength selective switch. 15 is a schematic diagram of realizing the function of the first wavelength division multiplexer through the second wavelength selective switch, and realizing the function of the first wavelength selector through the first wavelength selective switch. When the original optical device is used to implement the function of the wavelength selector, since there is no need to add new devices to the optical network node 10, the probability of interference with the optical signal transmitted by the optical network node 10 is reduced, and the communication network can be effectively guaranteed. performance.
需要说明的是，当光衰减器104、激射能力调整器103和滤波器件105均位于回路中不属于该传输通路的部分时，光衰减器104的输入端可以通过滤波器件105与分光器件102的输出端耦合，激射能力调整器103的输入端可以通过光衰减器104与滤波器件105的输出端耦合。It should be noted that when the optical attenuator 104, the lasing capability adjuster 103 and the filter device 105 are located in a part of the loop that does not belong to the transmission path, the input end of the optical attenuator 104 can pass through the filter device 105 and the spectroscopic device 102 The output terminal is coupled, and the input terminal of the lasing capability adjuster 103 can be coupled with the output terminal of the filter device 105 through the optical attenuator 104 .
在滤出控制光信号的第二种实现方式中，光网络节点还包括：第二波长选择器。第二波长选择器的输入端与分光器件的输出端耦合，且第二波长选择器位于回路中。第二波长选择器具有对波长进行选择的作用，因此，第二波长选择器能够从来自分光器件的光信号中，滤出控制光信号，并向目标光放大组件提供控制光信号。In the second implementation manner of filtering out the control optical signal, the optical network node further includes: a second wavelength selector. The input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop. The second wavelength selector has the function of selecting wavelengths. Therefore, the second wavelength selector can filter out the control optical signal from the optical signal from the spectroscopic device and provide the control optical signal to the target optical amplification component.
可选的，第二波长选择器的输入端还用于与其他光网络节点的输出端耦合，则第二波长选择器还用于从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向目标光放大组件提供滤出的业务光信号。Optionally, the input end of the second wavelength selector is also used to couple with the output end of other optical network nodes, and the second wavelength selector is also used to filter out the specified wavelength from the optical signals from other optical network nodes. service optical signal, and provides the filtered service optical signal to the target optical amplification component.
在一种实现方式中，第二波长选择器的功能可以通过未在目标光放大组件101的输入端和输出端之间形成回路时，该光网络节点10中原有的光器件实现。例如，如图2所示，光网络节点10包括第一波长选择开关和第二波长选择开关，第二波长选择器的功能可以通过第一波长选择开关或第二波长选择开关实现。其中，图16是通过第二波长选择开关实现第二波长选择器的功能的示意图。当使用原有的光器件实现第二波长选择器的功能时，由于无需向光网络节点10中添加新的器件，减少了对光网络节点10传输的光信号产生干扰的几率，能够有效保证通信网络的性能。In an implementation manner, the function of the second wavelength selector can be implemented by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 . For example, as shown in FIG. 2 , the optical network node 10 includes a first wavelength selective switch and a second wavelength selective switch. The function of the second wavelength selector can be implemented by the first wavelength selective switch or the second wavelength selective switch. Among them, FIG. 16 is a schematic diagram of realizing the function of the second wavelength selector through the second wavelength selective switch. When the original optical device is used to implement the function of the second wavelength selector, since there is no need to add new devices to the optical network node 10, the probability of interference with the optical signal transmitted by the optical network node 10 is reduced, and communication can be effectively guaranteed. Network performance.
在本申请实施例中，光放大器还用于接收假光信号。假光信号为未携带业务信息的光信号。在光网络节点10接收的业务光信号出现掉波时，可以在出现掉波的波长波道中填充假光信号，使得填充假光信号后的业务光信号维持为满波状态，进而使控制光信号的功率自适应地调整为业务光信号处于满波时的功率，以维持因受激拉曼散射效应引起的功率转移的稳定性。类似的，在光网络***会出现增波的情况下，可以预先在需要增波的波长波道中预填充假光信号，待填充有假光信号的业务光信号传输至需要增波的光网络节点10时，去除假光信号，以维持因受激拉曼散射效应引起的功率转移的稳定性。In this embodiment of the present application, the optical amplifier is also used to receive false optical signals. Fake optical signals are optical signals that do not carry business information. When the service optical signal received by the optical network node 10 drops, the false optical signal can be filled in the wavelength channel where the drop occurs, so that the service optical signal after filling the false optical signal remains in a full wave state, thereby making the control optical signal The power is adaptively adjusted to the power when the service optical signal is at full wave to maintain the stability of power transfer caused by the stimulated Raman scattering effect. Similarly, when the optical network system will have increased wavelength, the false optical signal can be pre-filled in the wavelength channel that needs to be increased, and the service optical signal to be filled with the false optical signal is transmitted to the optical network node that needs to be increased. At 10 hours, false optical signals are removed to maintain the stability of power transfer caused by stimulated Raman scattering effects.
图4为光网络节点10接收到的业务光信号满波的情况下，业务光信号和控制光信号的示意图。根据图4可以看出，控制光信号与业务光信号的功率基本相同。图5为光网络节点10接收到的业务光信号掉波的情况下，业务光信号和控制光信号的示意图。根据该图5可以看出，当业务光信号掉波时，控制光信号的功率实现了自适应调节，调节后的控制光信号的功率大于业务光信号的功率。图17为光网络节点10接收到的业务光信号掉波的情况下，在出现掉波的波长波道中填充假光信号后，业务光信号、假光信号和控制光信号的示意图。根据该图17可以看出，相较于图5，控制光信号的功率在图5所示的功率的基础上实现了自适应调节，调节后的控制光信号与业务光信号的功率基本相同。 Figure 4 is a schematic diagram of the service optical signal and the control optical signal when the service optical signal received by the optical network node 10 is full wave. It can be seen from Figure 4 that the power of the control optical signal and the service optical signal are basically the same. Figure 5 is a schematic diagram of the service optical signal and the control optical signal when the service optical signal received by the optical network node 10 drops. According to Figure 5, it can be seen that when the service optical signal drops, the power of the control optical signal is adaptively adjusted, and the power of the adjusted control optical signal is greater than the power of the service optical signal. Figure 17 is a schematic diagram of the service optical signal, the fake optical signal and the control optical signal after the wavelength channel where the wave drop occurs is filled with false optical signals when the service optical signal received by the optical network node 10 drops. It can be seen from Figure 17 that compared with Figure 5, the power of the control optical signal has been adaptively adjusted based on the power shown in Figure 5. The adjusted power of the control optical signal and the service optical signal are basically the same.
可选地，光网络节点10还包括：第三波长选择器。第三波长选择器的输出端与光放大器的输入端耦合。第三波长选择器用于接收假光信号，并向光放大器提供假光信号。可选地，第三波长选择器可以为波长选择开关或阵列波导光栅等光器件。该第三波长选择器的实现方式有多种，下面以以下几种为例为其进行说明：Optionally, the optical network node 10 further includes: a third wavelength selector. The output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier. The third wavelength selector is used to receive the false optical signal and provide the false optical signal to the optical amplifier. Optionally, the third wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating. There are many ways to implement the third wavelength selector. The following examples are used to illustrate them:
在第一种实现方式中，第三波长选择器可以位于回路中。此时，第三波长选择器的输入端还与分光器件102的输出端耦合，第三波长选择器还用于向光放大器提供回路中生成的控制光信号。In a first implementation, the third wavelength selector may be located in the loop. At this time, the input end of the third wavelength selector is also coupled with the output end of the spectroscopic device 102, and the third wavelength selector is also used to provide the optical amplifier with the control optical signal generated in the loop.
可选地，在该实现方式中，该第三波长选择器的实现方式还可以根据第三波长选择器是否位于光网络节点10与其他光网络节点传输光信号的传输通路中进行区分。下面分别对其两种实现情况进行说明：Optionally, in this implementation, the implementation of the third wavelength selector can also be distinguished based on whether the third wavelength selector is located in the transmission path between the optical network node 10 and other optical network nodes transmitting optical signals. The two implementations are described below:
在该实现方式的第一种实现情况中，第三波长选择器位于回路中，且位于光网络节点10与其他光网络节点传输光信号的传输通路中，即第三波长选择器位于回路中属于该传输通路的部分。此时，第三波长选择器的输入端还可以与其他光网络节点的输出端耦合，第三波长选择器还用于向光放大器提供来自其他光网络节点的光信号。例如，第三波长选择器还用于从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向光放大器提供滤出的业务光信号。In the first implementation of this implementation, the third wavelength selector is located in the loop and is located in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. That is, the third wavelength selector is located in the loop and belongs to part of the transmission path. At this time, the input end of the third wavelength selector can also be coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier. For example, the third wavelength selector is also used to filter out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provide the filtered service optical signals to the optical amplifier.
在该实现情况中，第三波长选择器接收的光信号包括：假光信号、来自分光器件的光信号和来自其他光网络节点的光信号。因此，第三波长选择器可以为具有多个输入端和至少一个输出端的光器件，该多个输入端包括：用于接收假光信号的输入端，与其他光网络节点的输出端耦合的输入端，及与分光器件102的输出端耦合的输入端。并且，该第三波长选择器还可以包括与其他光器件的输出端耦合的输入端。其他光器件为该光网络节点10中位于回路外的光器件(如ONU)。In this implementation, the optical signals received by the third wavelength selector include: false optical signals, optical signals from the optical splitting device, and optical signals from other optical network nodes. Therefore, the third wavelength selector may be an optical device having a plurality of input terminals and at least one output terminal. The plurality of input terminals include: an input terminal for receiving the false optical signal, and an input terminal coupled with the output terminals of other optical network nodes. terminal, and an input terminal coupled to the output terminal of the spectroscopic device 102. Furthermore, the third wavelength selector may further include an input terminal coupled to the output terminals of other optical devices. Other optical devices are optical devices located outside the loop in the optical network node 10 (such as ONU).
在一种实现方式中，第三波长选择器的功能可以通过未在目标光放大组件101的输入端和输出端之间形成回路时，该光网络节点10中原有的光器件实现。并且，用于实现第一波长选择器和第三波长选择器的功能的光器件可以为同一光器件，或者，用于实现第二波长选择器和第三波长选择器的功能的光器件可以为同一光器件。或者，该第三波长选择器可以为在光网络节点10与其他光网络节点传输光信号的传输通路中额外添加的光器件。例如，该第三波长选择器可以为在图2中第二波长选择开关后额外添加的光器件。当使用原有的光器件实现第三波长选择器的功能时，由于无需向光网络节点10中添加新的器件，减少了对光网络节点10传输的光信号产生干扰的几率，能够有效保证通信网络的性能。In an implementation manner, the function of the third wavelength selector can be implemented by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 . Moreover, the optical device used to realize the functions of the first wavelength selector and the third wavelength selector may be the same optical device, or the optical device used to realize the functions of the second wavelength selector and the third wavelength selector may be The same optical device. Alternatively, the third wavelength selector may be an additional optical device added in a transmission path for transmitting optical signals between the optical network node 10 and other optical network nodes. For example, the third wavelength selector may be an additional optical device added after the second wavelength selective switch in FIG. 2 . When the original optical device is used to implement the function of the third wavelength selector, since there is no need to add new devices to the optical network node 10, the probability of interference with the optical signal transmitted by the optical network node 10 is reduced, and communication can be effectively guaranteed. Network performance.
如图2所示，光网络节点10包括第一波长选择开关和第二波长选择开关，可以通过第一波长选择开关或第二波长选择开关实现第三波长选择器的功能。例如，如图18所示，其为通过第二波长选择开关实现第三波长选择器的功能的示意图。其中，图18中第二波长选择开关还用于实现第二波长选择器的功能。如图19所示，其为通过第一波长选择开关实现第三波长选择器的功能的示意图。As shown in FIG. 2 , the optical network node 10 includes a first wavelength selective switch and a second wavelength selective switch. The function of the third wavelength selector can be implemented through the first wavelength selective switch or the second wavelength selective switch. For example, as shown in FIG. 18 , it is a schematic diagram of realizing the function of the third wavelength selector through the second wavelength selective switch. The second wavelength selective switch in Figure 18 is also used to implement the function of the second wavelength selector. As shown in Figure 19, it is a schematic diagram of realizing the function of the third wavelength selector through the first wavelength selective switch.
在该实现方式的第二种实现情况中，第三波长选择器可以位于回路中，且位于光网络节点10与其他光网络节点传输光信号的传输通路外，即第三波长选择器位于回路中不属于该传输通路的部分。此时，第三波长选择器可以具有至少两个输入端，该至少两个输入端包括：用于接收假光信号的输入端和与分光器件的输出端耦合的输入端。可选的，该第三波长选择器还可以包括与其他光器件的输出端耦合的输入端。例如，第三波长选择器还可以包括与其他光网络节点的输出端耦合的输入端。此时，第三波长选择器还用于向光放大器提供来自其 他光网络节点的光信号。In a second implementation of this implementation, the third wavelength selector may be located in the loop and outside the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals. That is, the third wavelength selector may be located in the loop. Parts that do not belong to the transmission path. At this time, the third wavelength selector may have at least two input terminals, and the at least two input terminals include: an input terminal for receiving the false optical signal and an input terminal coupled to the output terminal of the optical splitting device. Optionally, the third wavelength selector may also include an input terminal coupled to the output terminals of other optical devices. For example, the third wavelength selector may also include inputs coupled to outputs of other optical network nodes. At this time, the third wavelength selector is also used to provide the optical amplifier with the Optical signals from other optical network nodes.
在第二种实现方式中，第三波长选择器可以位于光网络节点10与其他光网络节点传输光信号的传输通路中，且位于回路外。此时，第三波长选择器的输入端还与其他光网络节点的输出端耦合，第三波长选择器还用于向光放大器提供来自其他光网络节点的光信号。In the second implementation manner, the third wavelength selector may be located in the transmission path between the optical network node 10 and other optical network nodes for transmitting optical signals, and located outside the loop. At this time, the input end of the third wavelength selector is also coupled with the output end of other optical network nodes, and the third wavelength selector is also used to provide optical signals from other optical network nodes to the optical amplifier.
在该实现方式中，第三波长选择器可以为具有多个输入端和至少一个输出端的光器件，该多个输入端包括：接收假光信号的输入端，及与其他光网络节点的输出端耦合的输入端。并且，该第三波长选择器还可以包括与光网络节点10中其他光器件的输出端耦合的输入端。其他光器件为该光网络节点10中位于回路外的光器件(如ONU)。In this implementation, the third wavelength selector may be an optical device having a plurality of input terminals and at least one output terminal. The plurality of input terminals include: an input terminal for receiving the false optical signal, and an output terminal for communicating with other optical network nodes. Coupled input. Moreover, the third wavelength selector may also include an input terminal coupled to the output terminals of other optical devices in the optical network node 10 . Other optical devices are optical devices located outside the loop in the optical network node 10 (such as ONU).
并且，在该实现方式中，第三波长选择器的功能可以通过未在目标光放大组件101的输入端和输出端之间形成回路时，该光网络节点10中原有的光器件实现。例如，还可以使用第一波长选择开关实现第三波长选择器的功能。或者，该第三波长选择器可以为在光网络节点10与其他光网络节点传输光信号的传输通路中额外添加的光器件。Moreover, in this implementation manner, the function of the third wavelength selector can be realized by the original optical device in the optical network node 10 when a loop is not formed between the input end and the output end of the target optical amplification component 101 . For example, the first wavelength selective switch can also be used to implement the function of the third wavelength selector. Alternatively, the third wavelength selector may be an additional optical device added in a transmission path for transmitting optical signals between the optical network node 10 and other optical network nodes.
需要说明的是，第三波长选择器的设置位置和设置方式需要保证第三波长选择器提供的假光信号不会被滤波器件和波长选择器等器件过滤掉，需要保证第三波长选择器输入的假光信号能够传输至光放大器。例如，当第三波长选择器和滤波器件均位于回路中时，第三波长选择器的输入端可以与滤波器件的输出端耦合。或者，当第三波长选择器的输出端与滤波器件的输入端耦合时，滤波器件在对来自分光器件的光信号进行过滤时，还需要滤出假光信号，以便于能够向目标光放大组件101提供假光信号。It should be noted that the setting position and setting method of the third wavelength selector need to ensure that the false optical signal provided by the third wavelength selector will not be filtered out by filter devices and wavelength selectors. It is necessary to ensure that the input of the third wavelength selector The false optical signal can be transmitted to the optical amplifier. For example, when both the third wavelength selector and the filter device are located in the loop, the input end of the third wavelength selector can be coupled with the output end of the filter device. Or, when the output end of the third wavelength selector is coupled to the input end of the filter device, when the filter device filters the optical signal from the spectroscopic device, it also needs to filter out the false optical signal so that it can be directed to the target light amplification component. 101 provides a false light signal.
可选的，光网络节点还包括：第二波分复用器，第二波分复用器的输出端与光放大器的输入端耦合，第二波分复用器用于接收假光信号，并向光放大器提供假光信号。该第二波分复用器的实现方式可以相应参考第一波分复用器的实现方式。并且，如图20所示，也可以通过第一波分复用器实现该第二波分复用器的功能。Optionally, the optical network node also includes: a second wavelength division multiplexer, the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier, the second wavelength division multiplexer is used to receive the false optical signal, and Provides a false optical signal to the optical amplifier. The implementation of the second wavelength division multiplexer may refer to the implementation of the first wavelength division multiplexer. Moreover, as shown in FIG. 20 , the function of the second wavelength division multiplexer can also be realized by the first wavelength division multiplexer.
还需要说明的是，在需要向光放大器提供假光信号的场景中，光网络节点10还可以包括：光源。该光源用于生成指定波长和/或指定功率的假光信号，并向第三波长选择器或第二波分复用器提供该假光信号。可选地，该光网络节点10还可以包括：控制组件，该控制组件用于确定光放大器所需的假光信号的波长和/或功率，并控制光源生成该波长和/或功率的假光信号。进一步的，该光网络节点10还可以包括：检测组件，该检测组件用于检测未传输业务光信号的波道，并向控制组件通知该波道的波长，和/或，用于检测光放大器所需的假光信号，以便于控制组件确定光放大器所需的假光信号。It should also be noted that in a scenario where false optical signals need to be provided to the optical amplifier, the optical network node 10 may also include: a light source. The light source is used to generate a fake optical signal of a specified wavelength and/or a specified power, and provide the fake optical signal to the third wavelength selector or the second wavelength division multiplexer. Optionally, the optical network node 10 may also include: a control component used to determine the wavelength and/or power of the false optical signal required by the optical amplifier, and control the light source to generate false light of the wavelength and/or power. Signal. Further, the optical network node 10 may also include: a detection component, the detection component is used to detect the channel that does not transmit the service optical signal, and notifies the control component of the wavelength of the channel, and/or is used to detect the optical amplifier. The required false light signal is used to facilitate the control component to determine the false light signal required by the optical amplifier.
另外，也可以在光放大器的输出端与光网络节点10中其他光器件之间输入假光信号，本申请实施例对其不做具体限定。In addition, a false optical signal may also be input between the output end of the optical amplifier and other optical devices in the optical network node 10, which is not specifically limited in the embodiment of the present application.
可选地，光网络节点10还可以包括：第四波长选择器。第四波长选择器的输入端用于与其他光网络节点的输出端耦合，第四波长选择器的输出端与目标光放大组件101的输入端耦合。第四波长选择器用于从来自其他光网络节点的光信号中，滤除来自其他光网络节点的控制光信号，并向目标光放大组件101提供经过过滤的光信号。Optionally, the optical network node 10 may further include: a fourth wavelength selector. The input end of the fourth wavelength selector is used to couple with the output ends of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component 101 . The fourth wavelength selector is used to filter out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provide the filtered optical signals to the target optical amplification component 101 .
若其他光网络节点产生的控制光信号进入该光网络节点10，该其他光网络节点产生的控制光信号会与该光网络节点10中的控制光信号产生干扰，影响该光网络节点10中的控制光信号的功率，从而影响该控制光信号对维护光网络***的稳定性所起的作用。因此，通过设置该第四波长选择器，能够滤除来自其他光网络节点的控制光信号，从而保证光网络***的稳定性。If the control optical signals generated by other optical network nodes enter the optical network node 10 , the control optical signals generated by the other optical network nodes will interfere with the control optical signals in the optical network node 10 , affecting the optical network node 10 . Control the power of the optical signal, thereby affecting the role of the controlled optical signal in maintaining the stability of the optical network system. Therefore, by setting the fourth wavelength selector, control optical signals from other optical network nodes can be filtered, thereby ensuring the stability of the optical network system.
在一种实现方式中，第四波长选择器的功能可以通过未在目标光放大组件101的输入端 和输出端之间形成回路时，该光网络节点10中原有的光器件实现。例如，可以使用图2中第一波长选择开关实现第四波长选择器的功能。或者，该第四波长选择器可以为在光网络节点10与其他光网络节点传输光信号的传输通路中额外添加的光器件。例如，该第四波长选择器可以为在第二波长选择开关后额外添加的光器件。需要说明的是，当光网络节点10不包括第一波长选择开关和第二波长选择开关时，该光网络节点10也称为光放大器。例如，对应于图14，当光网络节点10不包括第一波长选择开关和第二波长选择开关时，其示意图如图21所示，该光网络节点10也称为光放大器。In one implementation, the function of the fourth wavelength selector can be achieved by not connecting the input end of the target light amplification component 101 When a loop is formed between the optical network node 10 and the output end, the original optical device in the optical network node 10 is implemented. For example, the first wavelength selective switch in FIG. 2 can be used to implement the function of the fourth wavelength selector. Alternatively, the fourth wavelength selector may be an additional optical device added in a transmission path for transmitting optical signals between the optical network node 10 and other optical network nodes. For example, the fourth wavelength selector may be an optical device added after the second wavelength selective switch. It should be noted that when the optical network node 10 does not include the first wavelength selective switch and the second wavelength selective switch, the optical network node 10 is also called an optical amplifier. For example, corresponding to Figure 14, when the optical network node 10 does not include the first wavelength selective switch and the second wavelength selective switch, its schematic diagram is as shown in Figure 21, and the optical network node 10 is also called an optical amplifier.
可选地，第四波长选择器可以为波长选择开关或阵列波导光栅等光器件。需要说明的是，光网络节点10也可以不包括第四波长选择器，此时可以由其他具有滤波功能的器件从来自其他光网络节点的光信号中，滤除来自其他光网络节点的控制光信号，并向目标光放大组件101提供经过过滤的光信号。Optionally, the fourth wavelength selector may be an optical device such as a wavelength selective switch or an arrayed waveguide grating. It should be noted that the optical network node 10 may not include the fourth wavelength selector. In this case, other devices with filtering functions may be used to filter out the control light from other optical network nodes from the optical signals from other optical network nodes. signal, and provides the filtered optical signal to the target optical amplification component 101.
综上所述，在本申请实施例提供的光网络节点中，目标光放大组件的输入端和输出端之间形成有回路，光网络节点能够通过目标光放大组件在回路中生成控制光信号。在光网络节点出现增波或掉波时，该控制光信号能够对输入目标光放大组件的光信号的功率进行调节，能够解决因受激拉曼散射效应带来的功率转移等导致剩余波信号性能波动问题，以及目标光放大组件的瞬态过冲问题，减轻增波或掉波对光网络***的性能的影响。To sum up, in the optical network node provided by the embodiment of the present application, a loop is formed between the input end and the output end of the target optical amplification component, and the optical network node can generate a control optical signal in the loop through the target optical amplification component. When an optical network node has a wave increase or drop, the control optical signal can adjust the power of the optical signal input to the target optical amplification component, and can solve the problem of residual wave signals caused by power transfer caused by the stimulated Raman scattering effect. The performance fluctuation problem and the transient overshoot problem of the target optical amplification component reduce the impact of wave addition or wave loss on the performance of the optical network system.
并且，由于在光放大器的输入端和输出端之间形成回路，目标光放大组件就能够基于回路生成控制光信号，控制光信号的能量来自于业务光信号出现增波或掉波时目标光放大组件释放的多余的泵浦能量，该控制光信号无需通过外部注入，生成控制光信号的过程无需根据光网络节点的光信号是否出现增波或掉波执行，且该过程也无需通过其他装置和软件进行控制。另外，控制光信号的功率基于目标光放大组件接收的业务光信号的功率确定。因此，该控制光信号的功率调节过程能够看成是自适应过程，该自适应过程能够实现功率的快速调节，能够适用于各种增波和掉波场景，并节省了对光信号进行控制的成本，减小了光网络节点的体积。Moreover, since a loop is formed between the input end and the output end of the optical amplifier, the target optical amplification component can generate a control optical signal based on the loop. The energy of the control optical signal comes from the target optical amplification when the service optical signal increases or drops. The excess pump energy released by the component, the control optical signal does not need to be injected externally. The process of generating the control optical signal does not need to be performed based on whether the optical signal of the optical network node increases or drops, and the process does not need to be through other devices and Software controls. In addition, the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component. Therefore, the power adjustment process of controlling the optical signal can be regarded as an adaptive process. This adaptive process can achieve rapid adjustment of power, can be applied to various wave addition and wave drop scenarios, and saves the time of controlling the optical signal. cost and reduce the size of optical network nodes.
需要说明的是，本申请实施例提供的光网络节点的中光器件的设置顺序可以进行适当调整，例如，激射能力调整器、光衰减器和滤波器件的顺序可以根据应用需求进行调整，且光器件也可以根据情况进行相应增减，例如，当来自分光器件的光信号的增益大于光信号的损耗时，该光网络节点可以不包括激射能力调整器和光衰减器，又例如，当第二波长选择开关具有滤波功能、调整激射能力的功能、及对接收到的光信号的光功率进行衰减时，该光网络节点也可以相应的不包括滤波器件、激射能力调整器和光衰减器。任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。It should be noted that the order of setting the optical components in the optical network node provided by the embodiment of the present application can be appropriately adjusted. For example, the order of the lasing capability adjuster, optical attenuator and filter components can be adjusted according to application requirements, and Optical devices can also be added or deleted according to the situation. For example, when the gain of the optical signal from the optical splitting device is greater than the loss of the optical signal, the optical network node does not need to include a laser capability adjuster and an optical attenuator. For example, when the When the two-wavelength selective switch has the function of filtering, adjusting the lasing capability, and attenuating the optical power of the received optical signal, the optical network node may also not include filter components, lasing capability adjusters and optical attenuators accordingly. . Any person familiar with the technical field can easily think of changing methods within the technical scope disclosed in this application, which should be covered by the protection scope of this application, and therefore will not be described again.
本申请实施例还提供了一种光网络节点的功率调节方法。如图22所示，该方法包括：An embodiment of the present application also provides a power adjustment method for an optical network node. As shown in Figure 22, the method includes:
步骤2201、光网络节点接收其他光网络节点提供的业务光信号，目标光放大组件对该业务光信号进行放大并输出，分光器件将经过放大的光信号分成多路光信号并输出，其中一路光信号通过回路传输到目标光放大组件。Step 2201: The optical network node receives the service optical signal provided by other optical network nodes. The target optical amplification component amplifies and outputs the service optical signal. The optical splitting device divides the amplified optical signal into multiple optical signals and outputs them. One of the optical signals is The signal is transmitted through the loop to the target optical amplification component.
步骤2202、光网络节点通过目标光放大组件在回路中生成控制光信号，控制光信号的功率基于目标光放大组件接收的业务光信号的功率确定。Step 2202: The optical network node generates a control optical signal in the loop through the target optical amplification component, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component.
步骤2203、光网络节点基于控制光信号调整业务光信号的功率。Step 2203: The optical network node adjusts the power of the service optical signal based on the control optical signal.
可选地，控制光信号包括：第一控制光信号和/或第二控制光信号，第一控制光信号的波 长小于目标光放大组件输出的所有业务光信号的波长，第二控制光信号的波长大于目标光放大组件输出的所有业务光信号的波长。Optionally, the control light signal includes: a first control light signal and/or a second control light signal, a wave of the first control light signal The length is smaller than the wavelength of all service optical signals output by the target optical amplification component, and the wavelength of the second control optical signal is greater than the wavelength of all service optical signals output by the target optical amplification component.
可选地，当控制光信号包括：第一控制光信号和第二控制光信号时，光网络节点还包括：激射能力调整器。激射能力调整器的输入端与分光器件的输出端耦合，且激射能力调整器位于回路中。此时，该方法还包括：激射能力调整器接收来自分光器件的光信号，调整光信号中控制光信号的激射能力。Optionally, when the control optical signal includes: a first control optical signal and a second control optical signal, the optical network node further includes: a lasing capability adjuster. The input end of the lasing ability adjuster is coupled with the output end of the spectroscopic device, and the lasing ability adjuster is located in the loop. At this time, the method also includes: the lasing capability adjuster receives the optical signal from the spectroscopic device, and adjusts the lasing capability of the optical signal to control the optical signal.
在一种实现方式中，激射能力调整器为光放大器。In one implementation, the lasing capability adjuster is an optical amplifier.
可选地，光网络节点还包括：光衰减器。光衰减器的输入端与分光器件的输出端耦合，且光衰减器位于回路中。此时，该方法还包括：光衰减器接收来自分光器件的光信号，对该光信号的光功率进行衰减。Optionally, the optical network node also includes: an optical attenuator. The input end of the optical attenuator is coupled with the output end of the optical splitting device, and the optical attenuator is located in the loop. At this time, the method also includes: the optical attenuator receives the optical signal from the spectroscopic device, and attenuates the optical power of the optical signal.
在滤出控制光信号的一种实现方式中，光网络节点还包括：滤波器件。滤波器件的输入端与分光器件的输出端耦合，且滤波器件位于回路中。此时，该方法还包括：滤波器件接收来自分光器件的光信号，从该光信号中滤出控制光信号，并向目标光放大组件提供滤出的控制光信号。In an implementation manner of filtering out the control optical signal, the optical network node further includes: a filter device. The input end of the filter device is coupled to the output end of the optical splitter device, and the filter device is located in the loop. At this time, the method also includes: the filter device receives the optical signal from the spectroscopic device, filters the control light signal from the optical signal, and provides the filtered control light signal to the target light amplification component.
可选地，光网络节点还包括：第一波分复用器。第一波分复用器的输入端分别与滤波器件的输出端、其他光网络节点的输出端耦合，第一波分复用器的输出端与目标光放大组件的输入端耦合。此时，该方法还包括：第一波分复用器接收来自滤波器件的控制光信号和来自其他光网络节点的光信号，向目标光放大组件提供来自滤波器件的控制光信号，及来自其他光网络节点的光信号。其中，光网络节点和其他光网络节点均用于在光网络***中传输业务光信号。Optionally, the optical network node further includes: a first wavelength division multiplexer. The input end of the first wavelength division multiplexer is coupled to the output end of the filter device and the output end of other optical network nodes respectively, and the output end of the first wavelength division multiplexer is coupled to the input end of the target optical amplification component. At this time, the method also includes: the first wavelength division multiplexer receives the control optical signal from the filter device and the optical signal from other optical network nodes, and provides the control optical signal from the filter device and the control optical signal from other optical network nodes to the target optical amplification component. Optical signals from optical network nodes. Among them, optical network nodes and other optical network nodes are used to transmit business optical signals in the optical network system.
可选的，光网络节点还包括：第一波长选择器。第一波长选择器的输入端用于与其他光网络节点的输出端耦合，第一波长选择器的输出端与第一波分复用器的输入端耦合。此时，该方法还包括：第一波长选择器从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向第一波分复用器提供滤出的业务光信号。Optionally, the optical network node also includes: a first wavelength selector. The input end of the first wavelength selector is used for coupling with the output ends of other optical network nodes, and the output end of the first wavelength selector is coupled with the input end of the first wavelength division multiplexer. At this time, the method also includes: the first wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the first wavelength division multiplexer.
在滤出控制光信号的另一种实现方式中，光网络节点还包括：第二波长选择器。第二波长选择器的输入端与分光器件的输出端耦合，且第二波长选择器位于回路中。此时，该方法还包括：第二波长选择器从来自分光器件的光信号中，滤出控制光信号，并向目标光放大组件提供控制光信号。In another implementation manner of filtering out the control optical signal, the optical network node further includes: a second wavelength selector. The input end of the second wavelength selector is coupled to the output end of the optical splitting device, and the second wavelength selector is located in the loop. At this time, the method further includes: the second wavelength selector filters out the control light signal from the light signal from the spectroscopic device, and provides the control light signal to the target light amplification component.
可选的，第二波长选择器的输入端与其他光网络节点的输出端耦合。此时，该方法还包括：第二波长选择器从来自其他光网络节点的光信号中，滤出指定波长的业务光信号，并向目标光放大组件提供滤出的业务光信号。Optionally, the input end of the second wavelength selector is coupled with the output end of other optical network nodes. At this time, the method also includes: the second wavelength selector filters out the service optical signal of the specified wavelength from the optical signal from other optical network nodes, and provides the filtered service optical signal to the target optical amplification component.
可选地，光网络节点可以包括：光放大器。光放大器包括多个光放大组件。在一种实现方式中，目标光放大组件为多个光放大组件中的一个。Optionally, the optical network node may include: an optical amplifier. The optical amplifier includes multiple optical amplification components. In one implementation, the target light amplification component is one of a plurality of light amplification components.
可选地，该方法还包括：光放大器接收假光信号，并在指定波长波道中填充假光信号。假光信号为未携带业务信息的光信号。Optionally, the method further includes: the optical amplifier receives the false optical signal, and fills the false optical signal in the designated wavelength channel. Fake optical signals are optical signals that do not carry business information.
可选地，光网络节点还包括：第三波长选择器。第三波长选择器的输出端与光放大器的输入端耦合。此时，该方法还包括：第三波长选择器接收假光信号，并向光放大器提供假光信号。Optionally, the optical network node further includes: a third wavelength selector. The output terminal of the third wavelength selector is coupled with the input terminal of the optical amplifier. At this time, the method also includes: the third wavelength selector receives the false optical signal and provides the false optical signal to the optical amplifier.
在一种实现方式中，第三波长选择器的输入端还与分光器件的输出端耦合，且第三波长选择器位于回路中。此时，该方法还包括：第三波长选择器向光放大器提供在回路中生成的控制光信号。 In one implementation, the input end of the third wavelength selector is also coupled to the output end of the spectroscopic device, and the third wavelength selector is located in the loop. At this time, the method further includes: the third wavelength selector providing the control optical signal generated in the loop to the optical amplifier.
可选地，第三波长选择器的输入端还与其他光网络节点的输出端耦合。此时，该方法还包括：第三波长选择器向光放大器提供来自其他光网络节点的光信号。例如，该方法还包括：第三波长选择器从来自其他光网络节点的光信号中滤出指定波长的业务光信号，并向光放大器提供滤出的业务光信号。Optionally, the input end of the third wavelength selector is also coupled with the output end of other optical network nodes. At this time, the method also includes: the third wavelength selector provides optical signals from other optical network nodes to the optical amplifier. For example, the method further includes: the third wavelength selector filters out service optical signals of specified wavelengths from optical signals from other optical network nodes, and provides the filtered service optical signals to the optical amplifier.
在另一种实现方式中，光网络节点还包括：第二波分复用器，第二波分复用器的输出端与光放大器的输入端耦合。此时，该方法还包括：第二波分复用器接收假光信号，并向光放大器提供假光信号。In another implementation manner, the optical network node further includes: a second wavelength division multiplexer, and the output end of the second wavelength division multiplexer is coupled to the input end of the optical amplifier. At this time, the method also includes: the second wavelength division multiplexer receives the false optical signal and provides the false optical signal to the optical amplifier.
可选地，光网络节点还包括：第四波长选择器。第四波长选择器的输入端与其他光网络节点的输出端耦合，第四波长选择器的输出端与目标光放大组件的输入端耦合。此时，该方法还包括：第四波长选择器从来自其他光网络节点的光信号中，滤除来自其他光网络节点的控制光信号，并向目标光放大组件提供经过过滤的光信号。Optionally, the optical network node further includes: a fourth wavelength selector. The input end of the fourth wavelength selector is coupled with the output end of other optical network nodes, and the output end of the fourth wavelength selector is coupled with the input end of the target optical amplification component. At this time, the method also includes: the fourth wavelength selector filters out control optical signals from other optical network nodes from optical signals from other optical network nodes, and provides the filtered optical signal to the target optical amplification component.
下面以图18和图20所示的光网络节点为例，对该光网络节点的功率调节方法的实现过程进行说明。如图18所示，光网络节点包括：第一波长选择开关、第二波长选择开关、目标光放大组件、分光器件、激射能力调整器和光衰减器。其中，第一波长选择开关和分光器件均与其他光网络节点耦合，且第二波长选择开关还用于实现滤波器件和第三波长选择器的功能，第一波长选择开关还用于实现第四波长选择器的功能。如图23所示，该方法包括：Taking the optical network node shown in Figures 18 and 20 as an example, the implementation process of the power adjustment method of the optical network node will be described below. As shown in Figure 18, the optical network node includes: a first wavelength selective switch, a second wavelength selective switch, a target optical amplification component, a spectroscopic device, a lasing capability adjuster and an optical attenuator. Wherein, the first wavelength selective switch and the optical splitting device are coupled with other optical network nodes, and the second wavelength selective switch is also used to implement the functions of the filter device and the third wavelength selector, and the first wavelength selective switch is also used to implement the fourth Wavelength selector function. As shown in Figure 23, the method includes:
步骤2301、第一波长选择开关接收其他光网络节点提供的光信号，从该光信号中滤出指定波长的业务光信号，及从该光信号中滤除控制光信号，并输出经过过滤的光信号。需要说明的是，当第一波长选择开关还与该光网络节点中其他光器件耦合时，还可以接收来自该其他光器件的光信号，并根据光网络***的业务需求确定是否输出来自该其他光器件的光信号。Step 2301. The first wavelength selective switch receives the optical signal provided by other optical network nodes, filters out the service optical signal of the specified wavelength from the optical signal, filters out the control optical signal from the optical signal, and outputs the filtered optical signal. Signal. It should be noted that when the first wavelength selective switch is also coupled to other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
步骤2302、第二波长选择开关接收第一波长选择开关提供的业务光信号，以及接收激射能力调整器提供的光信号，并从激射能力调整器提供的光信号中，滤出控制光信号，然后输出滤出的控制光信号和接收到的业务光信号。其中，控制光信号由光网络节点通过目标光放大组件在回路中生成。需要说明的是，当第二波长选择开关还与该光网络节点中其他光器件耦合时，还可以接收来自该其他光器件的光信号，并根据光网络***的业务需求确定是否输出来自该其他光器件的光信号。Step 2302: The second wavelength selective switch receives the service optical signal provided by the first wavelength selective switch and the optical signal provided by the lasing capability adjuster, and filters out the control optical signal from the optical signal provided by the lasing capability adjuster. , and then output the filtered control optical signal and the received service optical signal. Among them, the control optical signal is generated in the loop by the optical network node through the target optical amplification component. It should be noted that when the second wavelength selective switch is also coupled with other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
步骤2303、目标光放大组件在未接收到假光信号时，按照预设增益对接收到的业务光信号和控制光信号进行放大，并在对控制光信号按照预设增益进行放大的基础上，根据接收到的业务光信号的功率，调整控制光信号的功率，然后输出经过放大的业务光信号和控制光信号；目标光放大组件在接收假光信号后，在指定波长波道中填充假光信号，按照预设增益对接收到的业务光信号、假光信号和控制光信号进行放大，并在对控制光信号按照预设增益进行放大的基础上，根据接收到的业务光信号和假光信号的功率，调整控制光信号的功率，然后输出经过放大的业务光信号、假光信号和控制光信号。Step 2303: When the target optical amplification component does not receive a false optical signal, it amplifies the received service optical signal and control optical signal according to the preset gain, and on the basis of amplifying the control optical signal according to the preset gain, According to the power of the received business optical signal, adjust the power of the control optical signal, and then output the amplified business optical signal and control optical signal; after receiving the false optical signal, the target optical amplification component fills the false optical signal in the designated wavelength channel , amplify the received business optical signal, false optical signal and control optical signal according to the preset gain, and on the basis of amplifying the control optical signal according to the preset gain, according to the received business optical signal and false optical signal The power of the control optical signal is adjusted, and then the amplified service optical signal, false optical signal and control optical signal are output.
步骤2304、分光器件将接收到的光信号分为多路光信号，然后输出该多路光信号。Step 2304: The optical splitting device divides the received optical signal into multiple optical signals, and then outputs the multiple optical signals.
步骤2305、光衰减器接收来自分光器件的光信号，对该光信号的光功率进行衰减，然后输出经过衰减的光信号。Step 2305: The optical attenuator receives the optical signal from the spectroscopic device, attenuates the optical power of the optical signal, and then outputs the attenuated optical signal.
步骤2306、激射能力调整器接收来自光衰减器的光信号，调整该光信号中控制光信号的激射能力，然后输出该光信号中的业务光信号和调整激射能力后的控制光信号。其中，激射能力调整器输出的光信号会进入第二波长选择开关，第二波长选择开关会基于接收到的光信号继续执行步骤2302。 Step 2306: The lasing capability adjuster receives the optical signal from the optical attenuator, adjusts the lasing capability of the control optical signal in the optical signal, and then outputs the service optical signal in the optical signal and the control optical signal after adjusting the lasing capability. . Among them, the optical signal output by the lasing capability adjuster will enter the second wavelength selective switch, and the second wavelength selective switch will continue to perform step 2302 based on the received optical signal.
如图20所示，光网络节点包括：第一波长选择开关、第二波长选择开关、第一波分复用器、目标光放大组件、分光器件、激射能力调整器、光衰减器和滤波器。其中，第一波长选择开关和分光器件均与其他光网络节点耦合，且第一波分复用器还用于实现第三波长选择器的功能，第一波长选择开关还用于实现第四波长选择器的功能。如图24所示，该方法包括：As shown in Figure 20, the optical network node includes: a first wavelength selective switch, a second wavelength selective switch, a first wavelength division multiplexer, a target optical amplification component, a splitting device, a lasing capability adjuster, an optical attenuator and a filter device. Among them, the first wavelength selective switch and the optical splitting device are coupled with other optical network nodes, and the first wavelength division multiplexer is also used to realize the function of the third wavelength selector, and the first wavelength selective switch is also used to realize the fourth wavelength Selector function. As shown in Figure 24, the method includes:
步骤2401、第一波长选择开关接收其他光网络节点提供的光信号，从该光信号中滤出指定波长的业务光信号，从该光信号中滤除控制光信号，并输出经过过滤的光信号。需要说明的是，当第一波长选择开关还与光网络节点中的其他光器件耦合时，还可以接收来自该其他光器件的光信号，并根据光网络***的业务需求确定是否输出来自该其他光器件的光信号。Step 2401. The first wavelength selective switch receives the optical signal provided by other optical network nodes, filters out the service optical signal of the specified wavelength from the optical signal, filters out the control optical signal from the optical signal, and outputs the filtered optical signal. . It should be noted that when the first wavelength selective switch is also coupled to other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
步骤2402、第二波长选择开关接收第一波长选择开关提供的业务光信号，然后输出接收到的业务光信号。需要说明的是，当第二波长选择开关还与光网络节点中的其他光器件耦合时，还可以接收来自该其他光器件的光信号，并根据光网络***的业务需求确定是否输出来自该其他光器件的光信号。Step 2402: The second wavelength selective switch receives the service optical signal provided by the first wavelength selective switch, and then outputs the received service optical signal. It should be noted that when the second wavelength selective switch is also coupled to other optical devices in the optical network node, it can also receive optical signals from the other optical devices and determine whether to output signals from the other optical devices according to the business requirements of the optical network system. Optical signals from optical devices.
步骤2403、第一波分复用器在未接收到假光信号时，第一波分复用器接收激射能力调整器提供的控制光信号，及接收第二波长选择开关提供的业务光信号，并输出接收到的业务光信号和控制光信号；第一波分复用器在接收到假光信号时，第一波分复用器接收激射能力调整器提供的控制光信号，接收第二波长选择开关提供的业务光信号，及接收假光信号，在指定波长波道中填充假光信号，并输出接收到的业务光信号、控制光信号和假光信号。其中，控制光信号由光网络节点通过目标光放大组件在回路中生成。Step 2403: When the first wavelength division multiplexer does not receive a false optical signal, the first wavelength division multiplexer receives the control optical signal provided by the lasing capability adjuster and receives the service optical signal provided by the second wavelength selection switch. , and output the received service optical signal and control optical signal; when the first wavelength division multiplexer receives the false optical signal, the first wavelength division multiplexer receives the control optical signal provided by the lasing capability adjuster, and receives the second wavelength division multiplexer. The two-wavelength selective switch provides the service optical signal, receives the false optical signal, fills the false optical signal in the designated wavelength channel, and outputs the received business optical signal, control optical signal and false optical signal. Among them, the control optical signal is generated in the loop by the optical network node through the target optical amplification component.
步骤2404、目标光放大组件在未接收到假光信号时，按照预设增益对接收到的业务光信号和控制光信号进行放大，并在对控制光信号按照预设增益进行放大的基础上，根据接收到的业务光信号的功率，调整控制光信号的功率，然后输出经过放大的业务光信号和控制光信号；目标光放大组件在接收假光信号后，按照预设增益对接收到的业务光信号、假光信号和控制光信号进行放大，并在对控制光信号按照预设增益进行放大的基础上，根据接收到的业务光信号和假光信号的功率，调整控制光信号的功率，然后输出经过放大的业务光信号、假光信号和控制光信号。Step 2404: When the target optical amplification component does not receive a false optical signal, it amplifies the received service optical signal and control optical signal according to the preset gain, and on the basis of amplifying the control optical signal according to the preset gain, According to the power of the received business optical signal, the power of the control optical signal is adjusted, and then the amplified business optical signal and control optical signal are output; after receiving the false optical signal, the target optical amplification component adjusts the received business optical signal according to the preset gain. The optical signal, false optical signal and control optical signal are amplified, and on the basis of amplifying the control optical signal according to the preset gain, the power of the control optical signal is adjusted according to the power of the received business optical signal and false optical signal. Then the amplified service optical signal, false optical signal and control optical signal are output.
步骤2405、分光器件将接收到的光信号分为多路光信号，然后输出该多路光信号。Step 2405: The optical splitting device divides the received optical signal into multiple optical signals, and then outputs the multiple optical signals.
步骤2406、滤波器件接收来自分光器件的光信号，从来自分光器件的光信号中，滤出控制光信号，然后输出滤出的控制光信号。Step 2406: The filter device receives the optical signal from the spectroscopic device, filters out the control light signal from the optical signal from the spectroscopic device, and then outputs the filtered control light signal.
步骤2407、光衰减器接收来自滤波器件的控制光信号，对该控制光信号的光功率进行衰减，然后输出经过衰减的控制光信号。Step 2407: The optical attenuator receives the control optical signal from the filter device, attenuates the optical power of the control optical signal, and then outputs the attenuated control optical signal.
步骤2408、激射能力调整器接收来自光衰减器的控制光信号，调整该控制光信号的激射能力，然后输出调整激射能力后的控制光信号。其中，激射能力调整器输出的控制光信号会进入第一波分复用器，第一波分复用器会基于接收到的控制光信号继续执行步骤2403。Step 2408: The lasing capability adjuster receives the control light signal from the optical attenuator, adjusts the lasing capability of the control light signal, and then outputs the control light signal after adjusting the lasing capability. Among them, the control optical signal output by the lasing capability adjuster will enter the first wavelength division multiplexer, and the first wavelength division multiplexer will continue to perform step 2403 based on the received control optical signal.
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的方法中个光器件的具体工作过程，可以参考前述光网络节点实施例中的对应内容，在此不再赘述。Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of each optical device in the above-described method can be referred to the corresponding content in the aforementioned optical network node embodiment, and will not be described again here.
综上所述，在本申请实施例提供的方法中，在目标光放大组件的输入端和输出端之间形成回路，光网络节点通过目标光放大组件在回路中生成控制光信号，在光网络节点出现增波或掉波时，该控制光信号能够对输入目标光放大组件的光信号的功率进行调节，能够解决因受激拉曼散射效应带来的功率转移等导致剩余波信号性能波动问题，以及目标光放大组件的瞬态过冲问题，减轻增波或掉波对光网络***的性能的影响。To sum up, in the method provided by the embodiment of the present application, a loop is formed between the input end and the output end of the target optical amplification component, and the optical network node generates a control optical signal in the loop through the target optical amplification component. In the optical network When a node experiences a wave increase or wave loss, the control optical signal can adjust the power of the optical signal input to the target optical amplification component, and can solve the problem of residual wave signal performance fluctuations caused by power transfer caused by the stimulated Raman scattering effect. , as well as the transient overshoot problem of the target optical amplification component, and reduce the impact of wave addition or wave loss on the performance of the optical network system.
并且，由于在光放大器的输入端和输出端之间形成回路，目标光放大组件就能够基于回 路生成控制光信号，控制光信号的能量来自于业务光信号出现增波或掉波时目标光放大组件释放的多余的泵浦能量，该控制光信号无需通过外部注入，生成控制光信号的过程无需根据光网络节点的光信号是否出现增波或掉波执行，且该过程也无需通过其他装置和软件进行控制。另外，控制光信号的功率基于目标光放大组件接收的业务光信号的功率确定。因此，该控制光信号的功率调节过程能够看成是自适应过程，该自适应过程能够实现功率的快速调节，能够适用于各种增波和掉波场景，并节省了对光信号进行控制的成本，减小了光网络节点的体积。Moreover, since a loop is formed between the input end and the output end of the optical amplifier, the target optical amplification component can be based on the loop. The energy of the control optical signal comes from the excess pump energy released by the target optical amplification component when the service optical signal increases or drops. The control optical signal does not need to be injected from the outside. The process of generating the control optical signal There is no need to perform the operation based on whether the optical signal of the optical network node increases or drops, and the process does not need to be controlled by other devices and software. In addition, the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component. Therefore, the power adjustment process of controlling the optical signal can be regarded as an adaptive process. This adaptive process can achieve rapid adjustment of power, can be applied to various wave addition and wave drop scenarios, and saves the time of controlling the optical signal. cost and reduce the size of optical network nodes.
需要说明的是，本申请实施例提供的光网络节点的功率调节方法的步骤先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减。任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。It should be noted that the sequence of the steps of the power adjustment method for optical network nodes provided by the embodiments of the present application can be adjusted appropriately, and the steps can also be increased or decreased accordingly according to the situation. Any person familiar with the technical field can easily think of changing methods within the technical scope disclosed in this application, which should be covered by the protection scope of this application, and therefore will not be described again.
本申请实施例还提供了一种光网络***。如图25所示，该光网络***包括多个光网络节点10。该多个光网络节点包括一个或多个本申请实施例提供的光网络节点。例如，该多个光网络节点中每个光网络节点可以均为本申请实施例提供的光网络节点。An embodiment of the present application also provides an optical network system. As shown in Figure 25, the optical network system includes multiple optical network nodes 10. The plurality of optical network nodes include one or more optical network nodes provided by embodiments of the present application. For example, each optical network node in the plurality of optical network nodes may be an optical network node provided by the embodiment of the present application.
可选地，如图25所示，在该光网络***中，相邻设置的两个光网络节点之间可以设置有光放大器11。该光网络***中不同光器件之间可以通过通信光纤12耦合。Optionally, as shown in Figure 25, in this optical network system, an optical amplifier 11 may be provided between two adjacent optical network nodes. Different optical devices in the optical network system can be coupled through communication optical fibers 12 .
并且，该光网络***还可以包括接收装置。该接收装置接收来自光网络节点的光信号，并向客户侧提供光信号。在一种实现方式中，该接收装置可以为光转换单元(optical transform unit，OTU)。Furthermore, the optical network system may also include a receiving device. The receiving device receives the optical signal from the optical network node and provides the optical signal to the client side. In one implementation, the receiving device may be an optical transform unit (OTU).
本申请实施例提供了一种计算机设备。该计算机设备能够实现本申请实施例提供的光网络节点的功率调节方法中的部分或全部功能。图26是本申请实施例提供的一种计算机设备的结构示意图。如图26所示，该计算机设备2600包括处理器2601、存储器2602、通信接口2603和总线2604。其中，处理器2601、存储器2602、通信接口2603通过总线2604实现彼此之间的通信连接。An embodiment of the present application provides a computer device. The computer device can implement part or all of the functions in the power adjustment method for an optical network node provided by embodiments of the present application. Figure 26 is a schematic structural diagram of a computer device provided by an embodiment of the present application. As shown in Figure 26, the computer device 2600 includes a processor 2601, a memory 2602, a communication interface 2603 and a bus 2604. Among them, the processor 2601, the memory 2602, and the communication interface 2603 implement communication connections between each other through the bus 2604.
处理器2601可以包括通用处理器和/或专用硬件芯片。通用处理器可以包括：中央处理器(central processing unit，CPU)、微处理器或图形处理器(graphics processing unit，GPU)。CPU例如是一个单核处理器(single-CPU)，又如是一个多核处理器(multi-CPU)。专用硬件芯片是一个高性能处理的硬件模块。专用硬件芯片包括数字信号处理器、专用集成电路(application-specific integrated circuit，ASIC)、现场可编程逻辑门阵列(field-programmable gate array，FPGA)或者网络处理器(network processer，NP)中的至少一项。处理器2601还可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，本申请的光网络节点的部分或全部功能，可以通过处理器2601中的硬件的集成逻辑电路或者软件形式的指令完成。Processor 2601 may include a general-purpose processor and/or a special-purpose hardware chip. General-purpose processors can include: central processing unit (CPU), microprocessor or graphics processing unit (GPU). The CPU is, for example, a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A dedicated hardware chip is a high-performance processing hardware module. Specialized hardware chips include at least one of a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a network processor (NP) One item. The processor 2601 may also be an integrated circuit chip with signal processing capabilities. During the implementation process, part or all of the functions of the optical network node of the present application can be completed by instructions in the form of hardware integrated logic circuits or software in the processor 2601.
存储器2602用于存储计算机程序，计算机程序包括操作***2602a和可执行代码(即程序指令)2602b。存储器2602例如是只读存储器或可存储静态信息和指令的其它类型的静态存储设备，又如是随机存取存储器或者可存储信息和指令的其它类型的动态存储设备，又如是电可擦可编程只读存储器、只读光盘或其它光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其它磁存储设备，或者是能够用于携带或存储具有指令或数据结构形式的期望的可执行代码并能够由计算机存取的任何其它介 质，但不限于此。例如存储器2602用于存放出端口队列等。存储器2602例如是独立存在，并通过总线2604与处理器2601相连接。或者存储器2602和处理器2601集成在一起。存储器2602可以存储可执行代码，当存储器2602中存储的可执行代码被处理器2601执行时，处理器2601用于执行本申请实施例提供的方法的部分或全部功能。且处理器2601执行该过程的实现方式请相应参考前述方法实施例中的相关描述。存储器2602中还可以包括操作***等其他运行进程所需的软件模块和数据等。The memory 2602 is used to store computer programs, which include an operating system 2602a and executable codes (ie, program instructions) 2602b. The memory 2602 is, for example, a read-only memory or other type of static storage device that can store static information and instructions, or a random access memory or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable memory device. Read memory, read-only disc or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store Any other medium that is the desired executable code in the form of instructions or data structures and can be accessed by the computer. quality, but not limited to this. For example, the memory 2602 is used to store outbound port queues, etc. The memory 2602 exists independently, for example, and is connected to the processor 2601 through a bus 2604. Or the memory 2602 and the processor 2601 are integrated together. The memory 2602 can store executable code. When the executable code stored in the memory 2602 is executed by the processor 2601, the processor 2601 is used to execute part or all of the functions of the method provided by the embodiment of the present application. Please refer to the relevant descriptions in the foregoing method embodiments for how the processor 2601 executes this process. The memory 2602 may also include operating systems and other software modules and data required for running processes.
通信接口2603使用例如但不限于收发器一类的收发模块，来实现与其他设备或通信网络之间的通信。例如，通信接口2603可以是以下器件的任一种或任一种组合：网络接口(如以太网接口)、无线网卡等具有网络接入功能的器件。The communication interface 2603 uses a transceiver module such as but not limited to a transceiver to implement communication with other devices or communication networks. For example, the communication interface 2603 can be any one or any combination of the following devices: a network interface (such as an Ethernet interface), a wireless network card, and other devices with network access functions.
总线2604是任何类型的，用于实现计算机设备的内部器件(例如，存储器2602、处理器2601、通信接口2603)互连的通信总线。例如***总线。本申请实施例以计算机设备内部的上述器件通过总线2604互连为例说明，可选地，计算机设备2600内部的上述器件还可以采用除了总线2604之外的其他连接方式彼此通信连接。例如，计算机设备2600内部的上述器件通过内部的逻辑接口互连。Bus 2604 is any type of communication bus used to interconnect internal components of a computer device (eg, memory 2602, processor 2601, communication interface 2603). For example, system bus. This embodiment of the present application takes as an example the interconnection of the above-mentioned devices inside the computer device through the bus 2604. Optionally, the above-mentioned devices inside the computer device 2600 may also communicate with each other using other connection methods besides the bus 2604. For example, the above-mentioned devices inside the computer device 2600 are interconnected through internal logical interfaces.
需要说明的是，上述多个器件可以分别设置在彼此独立的芯片上，也可以至少部分的或者全部的设置在同一块芯片上。将各个器件独立设置在不同的芯片上，还是整合设置在一个或者多个芯片上，往往取决于产品设计的需要。本申请实施例对上述器件的具体实现形式不做限定。且上述各个附图对应的流程的描述各有侧重，某个流程中没有详述的部分，可以参见其他流程的相关描述。It should be noted that the above-mentioned plurality of devices can be respectively arranged on independent chips, or at least part or all of them can be arranged on the same chip. Whether each device is independently installed on different chips or integrated on one or more chips often depends on the needs of product design. The embodiments of this application do not limit the specific implementation forms of the above devices. The descriptions of the processes corresponding to each of the above drawings have different emphases. For parts that are not detailed in a certain process, you can refer to the relevant descriptions of other processes.
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。提供程序开发平台的计算机程序产品包括一个或多个计算机指令，在计算机设备上加载和执行这些计算机程序指令时，全部或部分地实现本申请实施例提供的方法的流程或功能。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product that provides a program development platform includes one or more computer instructions. When these computer program instructions are loaded and executed on a computer device, the process or function of the method provided by the embodiment of the present application is fully or partially implemented.
并且，计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质存储有提供程序开发平台的计算机程序指令。Furthermore, computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted over a wired connection from a website, computer, server or data center. (such as coaxial cable, optical fiber, digital subscriber line or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website, computer, server or data center. The computer-readable storage medium stores information that provides a program development platform Computer program instructions.
本申请实施例还提供了一种计算机集群。该计算机集群包括多个计算机设备，多个计算机设备包括多个处理器和多个存储器，多个存储器中存储有程序指令，多个处理器运行程序指令，使得计算机集群执行如本申请实施例提供的方法。其中，该计算机集群中各个计算机设备的实现方式请相应参考前述计算机设备的实现方式，此处不再赘述。An embodiment of the present application also provides a computer cluster. The computer cluster includes multiple computer devices. The multiple computer devices include multiple processors and multiple memories. Program instructions are stored in the multiple memories. The multiple processors run the program instructions, so that the computer cluster executes as provided in the embodiments of the present application. Methods. For the implementation method of each computer device in the computer cluster, please refer to the implementation method of the aforementioned computer equipment accordingly, which will not be described again here.
本申请实施例还提供了一种计算机可读存储介质，该计算机可读存储介质为非易失性计算机可读存储介质，该计算机可读存储介质包括程序指令，当程序指令在计算机设备上运行时，使得计算机设备执行如本申请实施例提供的方法。Embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium is a non-volatile computer-readable storage medium. The computer-readable storage medium includes program instructions. When the program instructions are run on a computer device When the computer device is executed, the method provided by the embodiment of the present application is caused.
本申请实施例还提供了一种包含指令的计算机程序产品，当计算机程序产品在计算机上运行时，使得计算机执行本申请实施例提供的方法。 Embodiments of the present application also provide a computer program product containing instructions. When the computer program product is run on a computer, it causes the computer to execute the method provided by the embodiments of the present application.
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage media mentioned can be read-only memory, magnetic disks or optical disks, etc.
需要说明的是，本申请所涉及的信息(包括但不限于用户设备信息、用户个人信息等)、数据(包括但不限于用于分析的数据、存储的数据、展示的数据等)以及信号，均为经用户授权或者经过各方充分授权的，且相关数据的收集、使用和处理需要遵守相关国家和地区的相关法律法规和标准。例如，本申请中涉及到的原始数据和可执行代码等都是在充分授权的情况下获取的。It should be noted that the information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this application, All are authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions. For example, the original data and executable code involved in this application were obtained with full authorization.
在本申请实施例中，术语“第一”、“第二”和“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。术语“至少一个”是指一个或多个，术语“多个”指两个或两个以上，除非另有明确的限定。In the embodiments of the present application, the terms "first", "second" and "third" are only used for description purposes and cannot be understood as indicating or implying relative importance. The term "at least one" refers to one or more, and the term "plurality" refers to two or more, unless expressly limited otherwise.
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。The term "and/or" in this application is just an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, alone There are three situations B. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的构思和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。 The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the concepts and principles of the present application shall be included in the protection of the present application. within the range.

Claims (16)

  1. 一种光网络节点，其特征在于，所述光网络节点包括目标光放大组件和分光器件；An optical network node, characterized in that the optical network node includes a target optical amplification component and an optical splitting device;
    所述分光器件分别与所述目标光放大组件的输入端和输出端耦合，使得所述目标光放大组件的输出端与输入端之间形成回路，所述分光器件用于将来自所述目标光放大组件的输出端的光信号分成多路光信号并输出，其中一路光信号通过所述回路传输到所述目标光放大组件；The spectroscopic device is coupled to the input end and the output end of the target light amplifying component respectively, so that a loop is formed between the output end and the input end of the target light amplifying component. The spectroscopic device is used to convert the light from the target light. The optical signal at the output end of the amplification component is divided into multiple optical signals and output, wherein one optical signal is transmitted to the target optical amplification component through the loop;
    所述光网络节点通过所述目标光放大组件在所述回路中生成控制光信号，所述控制光信号的功率基于所述目标光放大组件接收的业务光信号的功率确定。The optical network node generates a control optical signal in the loop through the target optical amplification component, and the power of the control optical signal is determined based on the power of the service optical signal received by the target optical amplification component.
  2. 根据权利要求1所述的光网络节点，其特征在于，所述控制光信号包括：第一控制光信号和/或第二控制光信号，所述第一控制光信号的波长小于所述目标光放大组件输出的所有业务光信号的波长，所述第二控制光信号的波长大于所述目标光放大组件输出的所有业务光信号的波长。The optical network node according to claim 1, wherein the control optical signal includes: a first control optical signal and/or a second control optical signal, and the wavelength of the first control optical signal is smaller than the target light signal. The wavelength of all service optical signals output by the amplification component, and the wavelength of the second control optical signal is greater than the wavelength of all service optical signals output by the target optical amplification component.
  3. 根据权利要求1所述的光网络节点，其特征在于，所述控制光信号包括：第一控制光信号和第二控制光信号，所述光网络节点还包括：激射能力调整器，所述激射能力调整器的输入端与所述分光器件的输出端耦合，且所述激射能力调整器位于所述回路中，所述激射能力调整器用于调整所述控制光信号的激射能力。The optical network node according to claim 1, characterized in that the control optical signal includes: a first control optical signal and a second control optical signal, the optical network node further includes: a lasing capability adjuster, the The input end of the lasing capability adjuster is coupled to the output end of the spectroscopic device, and the lasing capability adjuster is located in the loop. The lasing capability adjuster is used to adjust the lasing capability of the control light signal. .
  4. 根据权利要求3所述的光网络节点，其特征在于，所述激射能力调整器为光放大器。The optical network node according to claim 3, characterized in that the lasing capability adjuster is an optical amplifier.
  5. 根据权利要求1至4任一所述的光网络节点，其特征在于，所述光网络节点还包括：光衰减器，所述光衰减器的输入端与所述分光器件的输出端耦合，且所述光衰减器位于所述回路中，所述光衰减器用于对接收到的光信号的光功率进行衰减。The optical network node according to any one of claims 1 to 4, characterized in that the optical network node further includes: an optical attenuator, the input end of the optical attenuator is coupled to the output end of the optical splitting device, and The optical attenuator is located in the loop, and is used to attenuate the optical power of the received optical signal.
  6. 根据权利要求1至5任一所述的光网络节点，其特征在于，所述光网络节点还包括：滤波器件，所述滤波器件的输入端与所述分光器件的输出端耦合，且所述滤波器件位于所述回路中，所述滤波器件用于从来自所述分光器件的光信号中，滤出所述控制光信号，并向所述目标光放大组件提供所述控制光信号。The optical network node according to any one of claims 1 to 5, characterized in that the optical network node further includes: a filter device, the input end of the filter device is coupled to the output end of the optical splitting device, and the A filter device is located in the loop. The filter device is used to filter out the control light signal from the light signal from the spectroscopic device and provide the control light signal to the target light amplification component.
  7. 根据权利要求6所述的光网络节点，其特征在于，所述光网络节点还包括：第一波分复用器，所述第一波分复用器的输入端与所述滤波器件的输出端耦合，所述第一波分复用器的输出端与所述目标光放大组件的输入端耦合，所述第一波分复用器用于向所述目标光放大组件提供来自所述滤波器件的所述控制光信号，The optical network node according to claim 6, characterized in that the optical network node further includes: a first wavelength division multiplexer, the input end of the first wavelength division multiplexer and the output of the filter device end coupling, the output end of the first wavelength division multiplexer is coupled with the input end of the target optical amplification component, the first wavelength division multiplexer is used to provide the target optical amplification component with a signal from the filter device The control light signal,
    所述第一波分复用器的输入端还用于与其他光网络节点的输出端耦合，所述第一波分复用器还用于向所述目标光放大组件提供来自所述其他光网络节点的业务光信号，所述光网络节点和所述其他光网络节点均用于在光网络***中传输业务光信号。The input end of the first wavelength division multiplexer is also used to couple with the output end of other optical network nodes, and the first wavelength division multiplexer is also used to provide the target optical amplification component with light from the other optical network nodes. The service optical signal of the network node. The optical network node and the other optical network nodes are used to transmit the service optical signal in the optical network system.
  8. 根据权利要求7所述的光网络节点，其特征在于，所述光网络节点还包括：第一波长选择器，所述第一波长选择器的输入端用于与所述其他光网络节点的输出端耦合，所述第一波长选择器的输出端与所述第一波分复用器的输入端耦合，所述第一波长选择器用于从来自所述其他光网络节点的光信号中，滤出指定波长的业务光信号，并向所述第一波分复用器提供滤出的业务光信号。The optical network node according to claim 7, characterized in that the optical network node further includes: a first wavelength selector, the input end of the first wavelength selector is used to communicate with the outputs of the other optical network nodes. The output end of the first wavelength selector is coupled to the input end of the first wavelength division multiplexer. The first wavelength selector is used to filter the optical signals from the other optical network nodes. The service optical signal of the specified wavelength is output, and the filtered service optical signal is provided to the first wavelength division multiplexer.
  9. 根据权利要求1至5任一所述的光网络节点，其特征在于，所述光网络节点还包括：第二波长选择器，所述第二波长选择器的输入端与所述分光器件的输出端耦合，且所述第二 波长选择器位于所述回路中，所述第二波长选择器用于从来自所述分光器件的光信号中，滤出所述控制光信号，并向所述目标光放大组件提供所述控制光信号。The optical network node according to any one of claims 1 to 5, characterized in that the optical network node further includes: a second wavelength selector, the input end of the second wavelength selector and the output of the optical splitting device end coupling, and the second A wavelength selector is located in the loop, and the second wavelength selector is used to filter out the control light signal from the light signal from the spectroscopic device and provide the control light signal to the target light amplification component. .
  10. 根据权利要求9所述的光网络节点，其特征在于，所述第二波长选择器的输入端还用于与其他光网络节点的输出端耦合，所述第二波长选择器还用于从来自所述其他光网络节点的光信号中，滤出指定波长的业务光信号，并向所述目标光放大组件提供滤出的业务光信号，所述光网络节点和所述其他光网络节点均用于在光网络***中传输业务光信号。The optical network node according to claim 9, characterized in that the input end of the second wavelength selector is also used to couple with the output end of other optical network nodes, and the second wavelength selector is also used to connect from From the optical signals of the other optical network nodes, the service optical signal of the specified wavelength is filtered out, and the filtered service optical signal is provided to the target optical amplification component. Both the optical network node and the other optical network nodes use Used to transmit business optical signals in optical network systems.
  11. 根据权利要求1至10任一所述的光网络节点，其特征在于，所述光网络节点包括：光放大器，所述光放大器包括多个光放大组件，所述目标光放大组件为所述多个光放大组件中的一个。The optical network node according to any one of claims 1 to 10, characterized in that the optical network node includes: an optical amplifier, the optical amplifier includes a plurality of optical amplification components, and the target optical amplification component is the plurality of optical amplification components. One of the optical amplification components.
  12. 根据权利要求11所述的光网络节点，其特征在于，所述光放大器还用于接收假光信号，所述假光信号为未携带业务信息的光信号。The optical network node according to claim 11, characterized in that the optical amplifier is also used to receive false optical signals, and the false optical signals are optical signals that do not carry business information.
  13. 根据权利要求12所述的光网络节点，其特征在于，所述光网络节点还包括：第三波长选择器，所述第三波长选择器的输出端与所述光放大器的输入端耦合，所述第三波长选择器用于接收假光信号，并向所述光放大器提供所述假光信号。The optical network node according to claim 12, characterized in that the optical network node further includes: a third wavelength selector, the output end of the third wavelength selector is coupled to the input end of the optical amplifier, so The third wavelength selector is used to receive a false optical signal and provide the false optical signal to the optical amplifier.
  14. 根据权利要求12所述的光网络节点，其特征在于，所述光网络节点还包括：第二波分复用器，所述第二波分复用器的输出端与所述光放大器的输入端耦合，所述第二波分复用器用于接收假光信号，并向所述光放大器提供所述假光信号。The optical network node according to claim 12, characterized in that the optical network node further includes: a second wavelength division multiplexer, the output end of the second wavelength division multiplexer and the input of the optical amplifier end coupling, the second wavelength division multiplexer is used to receive the false optical signal and provide the false optical signal to the optical amplifier.
  15. 根据权利要求1至14任一所述的光网络节点，其特征在于，所述光网络节点还包括：第四波长选择器，所述第四波长选择器的输入端用于与其他光网络节点的输出端耦合，所述第四波长选择器的输出端与所述目标光放大组件的输入端耦合，所述第四波长选择器用于从来自所述其他光网络节点的光信号中，滤除来自所述其他光网络节点的控制光信号，并向所述目标光放大组件提供经过过滤的光信号，所述光网络节点和所述其他光网络节点均用于在光网络***中传输业务光信号。The optical network node according to any one of claims 1 to 14, characterized in that the optical network node further includes: a fourth wavelength selector, the input end of the fourth wavelength selector is used to communicate with other optical network nodes The output end of the fourth wavelength selector is coupled to the input end of the target optical amplification component. The fourth wavelength selector is used to filter out the optical signals from the other optical network nodes. Control optical signals from the other optical network nodes and provide filtered optical signals to the target optical amplification component. The optical network nodes and the other optical network nodes are used to transmit service optical signals in the optical network system. Signal.
  16. 一种光网络***，其特征在于，所述光网络***包括多个光网络节点，所述光网络节点为如权利要求1至15任一所述的光网络节点。 An optical network system, characterized in that the optical network system includes a plurality of optical network nodes, and the optical network nodes are the optical network nodes according to any one of claims 1 to 15.
PCT/CN2023/093028 2022-07-30 2023-05-09 Optical network node and optical network system WO2024027255A1 (en)

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CN111510240A (en) * 2017-03-13 2020-08-07 谷歌有限责任公司 Reconfigurable optical add-drop multiplexer and operation method thereof
US10805008B1 (en) * 2019-10-04 2020-10-13 Neptune Subsea Ip Limited Optical amplifiers that support gain clamping and optionally power loading
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