CN113726438B - Dynamic channel regulation and control method and device based on Raman effect - Google Patents
Dynamic channel regulation and control method and device based on Raman effect Download PDFInfo
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Abstract
The application provides a dynamic channel regulation and control method and device based on a Raman effect, wherein the method comprises the following steps: acquiring a target signal; coupling the target signal to obtain a signal to be processed; performing pumping gain control on the cascade Raman amplification module according to the required wavelength; amplifying the signal to be processed through a gain-controlled cascade Raman amplification module, and outputting a gain-amplified signal; inputting the gain amplified signal into a filter, and filtering to obtain a filtered signal; the filtered signal is output to the optical network as the selected signal. By the scheme, the problems that the flexibility of the network is not high and the utilization rate of bandwidth resources is low due to the fact that the existing fixed and unchangeable channel interval, rate and format are used are solved, and the technical effects of effectively improving the flexibility of the network and improving the utilization rate of the bandwidth are achieved.
Description
Technical Field
The application belongs to the technical field of data processing, and particularly relates to a dynamic channel regulation and control method and device based on a Raman effect.
Background
With the continuous development of core network traffic, a higher demand is put on a long-distance optical fiber transmission system with high capacity and low cost. Currently, the level of single channel Tbps can be achieved by Wavelength Division Multiplexing (WDM) technology, which requires more flexible bandwidth allocation for the core network. However, existing WDM systems typically use fixed channel spacing, rate, and format, and the network has poor flexibility and relatively low bandwidth resource utilization.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The application aims to provide a dynamic channel regulation and control method and device based on a Raman effect, which can improve the flexibility of a network and the utilization rate of bandwidth resources.
The application provides a dynamic channel regulation and control method and a device based on a Raman effect, which are realized as follows:
in one aspect, a method for dynamic channel modulation based on raman effect is provided, the method comprising:
acquiring a target signal;
coupling the target signal to obtain a signal to be processed;
performing pumping gain control on the cascade Raman amplification module according to the required wavelength;
amplifying the signal to be processed through a gain-controlled cascade Raman amplification module, and outputting a gain-amplified signal;
inputting the gain amplified signal into a filter, and filtering to obtain a filtered signal;
the filtered signal is output to the optical network as the selected signal.
In one embodiment, acquiring a target signal comprises:
receiving multipath signals with different wavelengths output by a plurality of nodes, wherein the signals of each node are transmitted by users;
and taking the multipath signals as target signals.
In one embodiment, the cascaded raman amplification module comprises: the Raman amplification device comprises a first backward pumping Raman amplification module and a second backward pumping Raman amplification module.
In one embodiment, the pump gain control of the cascaded raman amplification module according to a desired wavelength comprises:
acquiring a required wavelength;
determining the frequency of a pumping signal of a first backward pumping Raman amplification module and the frequency of a pumping signal of a second backward pumping Raman amplification module according to the required wavelength and the wavelength of the target signal;
and controlling the first backward pumping Raman amplification module and the second backward pumping Raman amplification module to select the target signal and amplify the target signal to the same power according to the determined pumping signal frequency of the first backward pumping Raman amplification module and the determined pumping signal frequency of the second backward pumping Raman amplification module.
In another aspect, a dynamic channel regulating device based on raman effect is provided, which includes:
the acquisition module is used for acquiring a target signal;
the coupling module is used for coupling the target signal to obtain a signal to be processed;
the gain module is used for carrying out pumping gain control on the cascade Raman amplification module according to the required wavelength;
the amplification module is used for amplifying the signal to be processed through the gain-controlled cascaded Raman amplification module and outputting a gain-amplified signal;
the filtering module is used for inputting the signals after the gain amplification into the filter and filtering the signals to obtain filtered signals;
and the input module is used for outputting the filtered signal to the optical network as a selected signal.
In one embodiment, the obtaining module comprises:
a receiving unit, configured to receive multiple paths of signals with different wavelengths output by multiple nodes, where the signal of each node is transmitted by a user;
and the generating unit is used for taking the multipath signals as target signals.
In one embodiment, the cascaded raman amplification module comprises: the Raman amplification device comprises a first backward pumping Raman amplification module and a second backward pumping Raman amplification module.
In one embodiment, the gain module comprises:
an acquisition unit for acquiring a desired wavelength;
the determining unit is used for determining the pumping signal frequency of the first backward pumping Raman amplification module and the pumping signal frequency of the second backward pumping Raman amplification module according to the required wavelength and the wavelength of the target signal;
and the control unit is used for controlling the first backward pumping Raman amplification module and the second backward pumping Raman amplification module to select and amplify the target signal to the same power according to the determined pumping signal frequency of the first backward pumping Raman amplification module and the determined pumping signal frequency of the second backward pumping Raman amplification module.
In yet another aspect, an electronic device is provided, comprising a processor and a memory for storing processor-executable instructions, which when executed by the processor implement the steps of the above-described method.
In yet another aspect, a computer-readable storage medium is provided having stored thereon computer instructions which, when executed, implement the steps of the above-described method.
The dynamic channel regulation and control method and device based on the Raman effect couple received multiple signals, then carry out pumping gain control on a cascade Raman amplification module according to required wavelength, amplify the signal to be processed through the cascade Raman amplification module after gain control, and output the signal after gain amplification; and inputting the signal after gain amplification into a filter, and filtering to obtain a filtered signal. That is, the raman amplification pumping power is adjusted to realize the selection and routing of the wide channel, and simultaneously, the signal can be gain-amplified, so as to flexibly adjust and control the efficiency of the optical network system, realize the simultaneous controllability of the multi-wavelength optical wave by changing the multi-path optical pumping wave, and realize the purposes of flexibly adjusting and controlling the flexible switching of different wavelength transmission and signal stable gain in the optical network system.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a flow chart of a method according to an embodiment of a Raman effect based dynamic channel modulation method provided herein;
FIG. 2 is a schematic diagram of the architecture of the dynamic channel fine tuning system provided in the present application;
fig. 3 is a schematic diagram illustrating an application of dynamic channel fine tuning in a flexible switched optical network system according to the present application;
fig. 4 is a schematic block diagram of an embodiment of a dynamic channel modulation device based on a raman effect provided herein.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to realize flexible network routing and switching, the improvement from three directions is considered, firstly, the bandwidth variable optical cross connection (BV-OXC) is adopted, the core of the BV-OXC is a Wavelength Selective Switch (WSS), the wavelength selective switch can adapt to a channel with proper capacity according to the size of a service, the service of any input port can be switched to any output port, and therefore the utilization rate of network spectrum resources can be effectively improved. And secondly, a bandwidth variable transceiver (BV-T) realizes the transmission of various data rates by selecting the number of subcarriers, and can select a proper modulation mode according to the physical conditions of a channel so as to improve the flexibility of the network. Finally, the development of a high-order modulation format is carried out, and under a certain transmission rate, the lower the code element rate is, the smaller the required bandwidth is, so that the code element rate can be reduced by improving the modulation format, the frequency spectrum utilization rate is improved, and the capacity is improved. Furthermore, the high-order modulation can also improve the transmission distance of unrepeatered transmission of optical signals, thereby reducing the dependence of channels on optical amplifiers and reducing the cost of the architecture network.
Specifically, in consideration of the fact that the wavelength selective switch can provide stable performance, and performs operations such as real-time configuration and monitoring of optical wavelengths, the wavelength selective switch based on stimulated raman scattering may have two structures, the first being a waveguide type structure, and may selectively amplify optical waves at a speed of several tens of picoseconds or faster. The second is a structure based on a raman fiber, which can amplify light waves over a wider bandwidth than the waveguide type. Therefore, the optical fiber type raman amplification module is superior to the waveguide type structure in the bandwidth coverage. In specific implementation, the wavelength selective switch based on the fiber raman amplification module can realize the selection and routing of a wide channel by adjusting the raman amplification pumping power, and can also perform gain amplification on signals so as to flexibly adjust and control the efficiency of the optical network system.
To this end, in this example, a dynamic channel regulation method based on the raman effect is provided, as shown in fig. 1, which may include the following steps:
step 101: acquiring a target signal;
step 102: coupling the target signal to obtain a signal to be processed;
step 103: performing pumping gain control on the cascade Raman amplification module according to the required wavelength;
step 104: amplifying the signal to be processed through a gain-controlled cascade Raman amplification module, and outputting a gain-amplified signal;
step 105: inputting the gain amplified signal into a filter, and filtering to obtain a filtered signal;
step 106: the filtered signal is output to the optical network as the selected signal.
In the above example, the cascaded raman amplification module is subjected to pumping gain control according to a required wavelength, the signal to be processed is amplified by the cascaded raman amplification module after gain control, and the signal after gain amplification is output; and inputting the signal after gain amplification into a filter, and filtering to obtain a filtered signal. That is, the raman amplification pumping power is adjusted by the wavelength to realize the selection and routing of the wide channel, and simultaneously, the signal can be gain-amplified, so as to flexibly adjust and control the efficiency of the optical network system, realize the simultaneous controllability of the multi-wavelength optical wave by changing the multi-path optical pumping wave, and realize the purposes of flexibly adjusting and controlling the flexible switching of different wavelength transmission and signal stable gain in the optical network system.
Wherein, acquiring the target signal may be: receiving multipath signals with different wavelengths output by a plurality of nodes, wherein the signals of each node are transmitted by users; and taking the multipath signals as target signals. For example: the user transmits information to each node, and the nodes output signals with different wavelengths as target signals.
In the implementation process, for the purpose of flexibly switching different wavelength transmissions and signal stable gains, the cascaded raman amplification module may include: the Raman amplification device comprises a first backward pumping Raman amplification module and a second backward pumping Raman amplification module. Through the two backward pumping Raman amplification modules, signals can be selectively output by adjusting different pumping signal frequencies; meanwhile, signals with different powers can be received, selected and amplified to the same power, so that the effect of a flexible optical switch is achieved, and output is performed.
For example: the pump gain control of the cascaded raman amplification module according to the required wavelength may include:
s1: acquiring a required wavelength;
s2: determining the frequency of a pumping signal of a first backward pumping Raman amplification module and the frequency of a pumping signal of a second backward pumping Raman amplification module according to the required wavelength and the wavelength of the target signal;
s3: and controlling the first backward pumping Raman amplification module and the second backward pumping Raman amplification module to select the target signal and amplify the target signal to the same power according to the determined pumping signal frequency of the first backward pumping Raman amplification module and the determined pumping signal frequency of the second backward pumping Raman amplification module.
In practical implementation, a corresponding conversion relationship between the wavelength and the pumping signal frequency may be established, and the pumping signal frequency of the first backward pumping raman amplification module and the pumping signal frequency of the second backward pumping raman amplification module may be obtained through a preset conversion relationship in the case of obtaining the desired wavelength and the wavelength of the target signal.
The above method is described below with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application and is not to be construed as limiting the present application.
The present embodiment provides a method for accurately controlling a dynamic channel based on a raman effect in a flexible control optical network system, which realizes simultaneous controllability of multiple wavelength optical waves by changing multiple optical pump waves, and can achieve the purpose of flexibly switching different wavelength transmissions and signal stable gains in the flexible control optical network system. Specifically, the method can comprise the following steps:
step 1: acquiring a required signal;
step 2: coupling the signals;
and step 3: performing pumping gain control on the cascade Raman amplification module according to the required wavelength;
and 4, step 4: amplifying the signal through the Raman amplification module, and outputting a gain amplified signal;
and 5: inputting the gain amplified signal into a filter for filtering to obtain a filtered signal;
step 6: outputting the filtered signal to an optical network;
namely, a method for accurately regulating and controlling a dynamic channel in a flexible switching optical network system is provided; acquiring a required signal; coupling the signals; adjusting the pumping gain according to the required wavelength; signal cascade pumping Raman amplification; inputting the amplified signal into a filter; and outputting a selection signal.
As shown in fig. 2, in this example, a schematic structural diagram of a dynamic channel accurate regulation system is provided, where the system includes:
a signal obtaining module 201, configured to obtain a received signal;
a signal coupling module 202, configured to couple the acquired signal;
the pumping gain control module 203 is used for carrying out pumping gain control on the cascade Raman amplification module according to the required wavelength;
the cascade Raman amplification module 204 is used for amplifying the signal and outputting a gain signal;
a filtering module 205 for filtering the gain signal;
and a signal output module 206, configured to output the filtered signal to an optical network.
In the above example, the flexible modulation optical network system is taken as an example, a conventional large-capacity amplification scheme is improved, and a large-capacity dynamic channel accurate modulation scheme is provided, in which gains are dynamically amplified by flexibly modulating different wavelengths in the optical network system, flexible modulation and switching of the gains of different wavelengths can be realized by controlling the wavelength or power of pumping, and simultaneous controllability of multiple wavelength optical waves is realized by changing multiple optical pumping waves.
Specifically, as shown in fig. 3, in order to accurately regulate and control the application of the dynamic channel in the flexible switching optical network system, a user transmits information to each node, and the node outputs signals with different wavelengths to the wavelength control node. In the wavelength control node, coupling and receiving signals of each channel, and then selectively outputting the signals by adjusting different pumping signal frequencies through two backward pumping Raman amplification modules; meanwhile, signals with different powers can be received, selected and amplified to the same power, so that the effect of a flexible optical switch is achieved, and output is performed. Wherein 302 represents a flexible WSS schematic module, 304 represents a flexible WSS application schematic, and 305 represents a wavelength control node schematic in a flexible tuning optical network system.
Based on the same inventive concept, the embodiment of the present application further provides a dynamic channel regulation device based on the raman effect, as described in the following embodiments. Because the principle of solving the problem of the dynamic channel regulation and control device based on the raman effect is similar to that of the dynamic channel regulation and control method based on the raman effect, the implementation of the dynamic channel regulation and control device based on the raman effect can be referred to the implementation of the dynamic channel regulation and control method based on the raman effect, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 4 is a block diagram of a structure of a dynamic channel regulation device based on the raman effect according to an embodiment of the present application, as shown in fig. 4, which may include: an obtaining module 401, a coupling module 402, a gain module 403, an amplifying module 404, a filtering module 405, and an input module 406, and the structure will be described below.
An obtaining module 401, configured to obtain a target signal;
a coupling module 402, configured to couple the target signal to obtain a signal to be processed;
a gain module 403, configured to perform pump gain control on the cascaded raman amplification module according to a required wavelength;
the amplifying module 404 is configured to amplify the signal to be processed by the gain-controlled cascaded raman amplifying module, and output the gain-amplified signal;
a filtering module 405, configured to input the gain-amplified signal into a filter, and perform filtering to obtain a filtered signal;
an input module 406, configured to output the filtered signal as a selected signal to the optical network.
In an embodiment, the obtaining module 401 may include: a receiving unit, configured to receive multiple paths of signals with different wavelengths output by multiple nodes, where the signal of each node is transmitted by a user; and the generating unit is used for taking the multipath signals as target signals.
In one embodiment, the cascaded raman amplification module may include: the Raman amplification device comprises a first backward pumping Raman amplification module and a second backward pumping Raman amplification module.
In one embodiment, the gain module 403 may include: an acquisition unit for acquiring a desired wavelength; the determining unit is used for determining the pumping signal frequency of the first backward pumping Raman amplification module and the pumping signal frequency of the second backward pumping Raman amplification module according to the required wavelength and the wavelength of the target signal; and the control unit is used for controlling the first backward pumping Raman amplification module and the second backward pumping Raman amplification module to select and amplify the target signal to the same power according to the determined pumping signal frequency of the first backward pumping Raman amplification module and the determined pumping signal frequency of the second backward pumping Raman amplification module.
An embodiment of the present application further provides a specific implementation manner of an electronic device, which is capable of implementing all steps in the dynamic channel regulation and control method based on the raman effect in the foregoing embodiment, where the electronic device specifically includes the following contents: a processor (processor), a memory (memory), a communication Interface (Communications Interface), and a bus; the processor, the memory and the communication interface complete mutual communication through the bus; the processor is configured to call a computer program in the memory, and the processor implements all the steps in the dynamic channel regulation and control method based on the raman effect in the above embodiments when executing the computer program, for example, the processor implements the following steps when executing the computer program:
step 1: acquiring a target signal;
step 2: coupling the target signal to obtain a signal to be processed;
and step 3: performing pumping gain control on the cascade Raman amplification module according to the required wavelength;
and 4, step 4: amplifying the signal to be processed through a gain-controlled cascade Raman amplification module, and outputting a gain-amplified signal;
and 5: inputting the gain amplified signal into a filter, and filtering to obtain a filtered signal;
step 6: the filtered signal is output to the optical network as the selected signal.
As can be seen from the above description, in the embodiment of the present application, the cascade raman amplification module performs pump gain control according to a desired wavelength, amplifies the signal to be processed by the cascade raman amplification module after gain control, and outputs a signal after gain amplification; and inputting the signal after gain amplification into a filter, and filtering to obtain a filtered signal. That is, the raman amplification pumping power is adjusted to realize the selection and routing of the wide channel, and simultaneously, the signal can be gain-amplified, so as to flexibly adjust and control the efficiency of the optical network system, realize the simultaneous controllability of the multi-wavelength optical wave by changing the multi-path optical pumping wave, and realize the purposes of flexibly adjusting and controlling the flexible switching of different wavelength transmission and signal stable gain in the optical network system.
Embodiments of the present application further provide a computer-readable storage medium capable of implementing all steps in the dynamic channel regulation and control method based on the raman effect in the above embodiments, where the computer-readable storage medium stores a computer program, and the computer program implements all steps of the dynamic channel regulation and control method based on the raman effect when being executed by a processor, for example, the processor implements the following steps when executing the computer program:
step 1: acquiring a target signal;
step 2: coupling the target signal to obtain a signal to be processed;
and step 3: performing pumping gain control on the cascade Raman amplification module according to the required wavelength;
and 4, step 4: amplifying the signal to be processed through a gain-controlled cascade Raman amplification module, and outputting a gain-amplified signal;
and 5: inputting the gain amplified signal into a filter, and filtering to obtain a filtered signal;
step 6: the filtered signal is output to the optical network as the selected signal.
As can be seen from the above description, in the embodiment of the present application, the cascade raman amplification module performs pump gain control according to a desired wavelength, amplifies the signal to be processed by the cascade raman amplification module after gain control, and outputs a signal after gain amplification; and inputting the signal after gain amplification into a filter, and filtering to obtain a filtered signal. That is, the raman amplification pumping power is adjusted to realize the selection and routing of the wide channel, and simultaneously, the signal can be gain-amplified, so as to flexibly adjust and control the efficiency of the optical network system, realize the simultaneous controllability of the multi-wavelength optical wave by changing the multi-path optical pumping wave, and realize the purposes of flexibly adjusting and controlling the flexible switching of different wavelength transmission and signal stable gain in the optical network system.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the hardware + program class embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the partial description of the method embodiment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Although the present application provides method steps as described in an embodiment or flowchart, additional or fewer steps may be included based on conventional or non-inventive efforts. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or client product executes, it may execute sequentially or in parallel (e.g., in the context of parallel processors or multi-threaded processing) according to the embodiments or methods shown in the figures.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a vehicle-mounted human-computer interaction device, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
Although embodiments of the present description provide method steps as described in embodiments or flowcharts, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the embodiments of the present description, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of multiple sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present description may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The embodiments of this specification may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The described embodiments may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
Claims (6)
1. A method for dynamic channel modulation based on raman effect, the method comprising:
acquiring a target signal;
coupling the target signal to obtain a signal to be processed;
performing pumping gain control on the cascade Raman amplification module according to the required wavelength;
amplifying the signal to be processed through a gain-controlled cascade Raman amplification module, and outputting a gain-amplified signal;
inputting the gain amplified signal into a filter, and filtering to obtain a filtered signal;
outputting the filtered signal as a selected signal to an optical network;
the cascaded Raman amplification module comprises: the Raman amplification module comprises a first backward pumping Raman amplification module and a second backward pumping Raman amplification module;
the step of controlling the pumping gain of the cascade Raman amplification module according to the required wavelength comprises the following steps:
acquiring a required wavelength;
determining the frequency of a pumping signal of a first backward pumping Raman amplification module and the frequency of a pumping signal of a second backward pumping Raman amplification module according to the required wavelength and the wavelength of the target signal;
and controlling the first backward pumping Raman amplification module and the second backward pumping Raman amplification module to select the target signal and amplify the target signal to the same power according to the determined pumping signal frequency of the first backward pumping Raman amplification module and the determined pumping signal frequency of the second backward pumping Raman amplification module.
2. The method of claim 1, wherein acquiring a target signal comprises:
receiving multipath signals with different wavelengths output by a plurality of nodes, wherein the signals of each node are transmitted by users;
and taking the multipath signals as target signals.
3. A dynamic channel modulation device based on raman effect, comprising:
the acquisition module is used for acquiring a target signal;
the coupling module is used for coupling the target signal to obtain a signal to be processed;
the gain module is used for carrying out pumping gain control on the cascade Raman amplification module according to the required wavelength;
the amplification module is used for amplifying the signal to be processed through the gain-controlled cascaded Raman amplification module and outputting a gain-amplified signal;
the filtering module is used for inputting the signals after the gain amplification into the filter and filtering the signals to obtain filtered signals;
the input module is used for outputting the filtered signal to an optical network as a selected signal;
the cascaded Raman amplification module comprises: the Raman amplification module comprises a first backward pumping Raman amplification module and a second backward pumping Raman amplification module;
the gain module includes:
an acquisition unit for acquiring a desired wavelength;
the determining unit is used for determining the pumping signal frequency of the first backward pumping Raman amplification module and the pumping signal frequency of the second backward pumping Raman amplification module according to the required wavelength and the wavelength of the target signal;
and the control unit is used for controlling the first backward pumping Raman amplification module and the second backward pumping Raman amplification module to select and amplify the target signal to the same power according to the determined pumping signal frequency of the first backward pumping Raman amplification module and the determined pumping signal frequency of the second backward pumping Raman amplification module.
4. The apparatus of claim 3, wherein the obtaining module comprises:
a receiving unit, configured to receive multiple paths of signals with different wavelengths output by multiple nodes, where the signal of each node is transmitted by a user;
and the generating unit is used for taking the multipath signals as target signals.
5. An electronic device comprising a processor and a memory for storing processor-executable instructions which, when executed by the processor, implement the steps of the method of claim 1 or 2.
6. A computer readable storage medium having stored thereon computer instructions which, when executed, implement the steps of the method of claim 1 or 2.
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| CN100373252C (en) * | 2004-05-20 | 2008-03-05 | 北京大学 | Distributed Raman amplifier |
| US7277221B2 (en) * | 2005-11-15 | 2007-10-02 | At&T Corp. | Fast dynamic gain control in cascaded Raman fiber amplifiers |
| US8477411B2 (en) * | 2009-07-17 | 2013-07-02 | Cisco Technology, Inc. | Fiber-adaptive distributed Raman amplifier pump setup scheme |
| EP3120471A1 (en) * | 2014-03-19 | 2017-01-25 | Xtera Communications. Inc. | Multi-span optical communications link having remote optically pumped amplifier |
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| CN111698033A (en) * | 2020-05-21 | 2020-09-22 | 武汉光迅科技股份有限公司 | Hybrid optical fiber amplifier, optical signal amplification method, and optical communication system |
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