CN114124288B - All-optical switching communication system and method based on optical fiber coding addressing - Google Patents
All-optical switching communication system and method based on optical fiber coding addressing Download PDFInfo
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- CN114124288B CN114124288B CN202111504137.7A CN202111504137A CN114124288B CN 114124288 B CN114124288 B CN 114124288B CN 202111504137 A CN202111504137 A CN 202111504137A CN 114124288 B CN114124288 B CN 114124288B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
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- 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
- H04B10/40—Transceivers
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- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0215—Architecture aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0254—Optical medium access
- H04J14/0267—Optical signaling or routing
- H04J14/0269—Optical signaling or routing using tables for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0283—WDM ring architectures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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Abstract
The invention discloses an all-optical switching communication system and method based on optical fiber coding addressing, wherein the system comprises a plurality of all-optical switching devices which are connected in series through optical cable optical fibers; each all-optical switching device comprises a first switching board card and a second switching board card; the first exchange board card and the second exchange board card comprise a high-speed control module, n narrow-wave pulse light sources, a wavelength division multiplexer, a circulator, a light wave acquisition module, a first optical switch, a light emitting end, a light receiving end, a second optical switch, a light splitter, m gratings with different center wavelengths and m photoelectric conversion modules; the scheme utilizes the unique optical identification of the optical fiber code to endow each optical communication device with optical address, uses the optical address as the light wave transmission condition, and enables the transfer device to directly and simply analyze and identify the light wave and directly transmit the light wave or directly transfer the light wave to the third device without pretreatment, thereby avoiding photoelectric analysis and photoelectric conversion in the device.
Description
Technical Field
The invention relates to the field of optical fiber communication, in particular to an all-optical switching communication system and method based on optical fiber coding addressing.
Background
In traditional optical fiber communication, especially SDH self-healing ring communication, optical wave data needs to be transferred to the next device after photoelectric conversion and data analysis by intermediate devices until the optical wave data is transferred to the designated device. The optical communication self-healing ring is the basis of the existing optical communication, and requires the optical communication equipment to have high operation capability and extremely consume energy, such as photoelectric conversion, data analysis and electro-optical conversion of the intermediate equipment, namely time and energy are wasted, and the equipment burden is increased.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an all-optical switching communication system and method based on the optical fiber coding addressing, which can reduce transmission time and processing energy.
An all-optical switching communication system based on optical fiber coding and addressable in an embodiment of a first aspect of the present invention includes a plurality of all-optical switching devices, and a plurality of all-optical switching devices are connected in series through optical fibers; each all-optical switching device comprises a first switching board card and a second switching board card; the first exchange board card and the second exchange board card both comprise a high-speed control module, n narrow-wave pulse light sources, a wavelength division multiplexer, a circulator, a light wave acquisition module, a first optical switch, a light emitting end, a light receiving end, a second optical switch, a light splitter, m gratings with different center wavelengths and m photoelectric conversion modules, wherein the m gratings with different center wavelengths form optical fiber codes of the end all-optical exchange equipment; the high-speed control module is respectively connected with the n narrow-wave pulse light sources, the first optical switch, the second optical switch and the m photoelectric conversion modules to send control instructions and receive signals; the n narrow-wave pulse light sources, the wavelength division multiplexer, the circulator, the first optical switch and the light emitting end are sequentially connected, and the light wave acquisition module is connected between the circulator and the high-speed control module; the light receiving end, the second optical switch, the light splitter and the m gratings with different center wavelengths are sequentially connected, the m gratings with different center wavelengths are connected with the m photoelectric conversion modules in a one-to-one correspondence manner, and the switching channel of the first optical switch is connected with the second optical switch; the high-speed control module of the first exchange board card is in communication connection with the high-speed control module of the second exchange board card, the second optical switch switching channel of the first exchange board card is connected with the first optical switch of the second exchange board card, and the high-speed control module is also used for controlling the switching of the first optical switch and the second optical switch according to whether the optical fiber codes acquired by the local photoelectric conversion module are matched or not, so as to determine a receipt or forward data to next-stage equipment; the light emitting end and the light receiving end of the first exchange board card/the second exchange board card are connected with the light receiving end and the light emitting end of the first exchange board card/the second exchange board card adjacent to the all-optical exchange equipment through optical fibers.
An embodiment of the invention according to the first aspect of the invention provides an all-optical switching communication system addressable based on optical fiber coding, which has at least the following advantages: the scheme utilizes the unique optical identification of the optical fiber code to realize the point-to-point identification of a data sender and a data receiver, endows each optical communication device with optical addressee, realizes the direct simple analysis and identification of the receiver to the light wave, uses the optical address as the light wave transmission condition, and enables the transfer device to directly analyze and identify the light wave and directly transmit the light wave or directly transfer the light wave to a third device without pretreatment, thereby avoiding the photoelectric analysis and photoelectric conversion of the device.
According to some embodiments of the first aspect of the present invention, m filters are disposed in one-to-one correspondence between the m gratings and the optical splitter, and the m gratings correspond to the center wavelengths of the m filters.
According to some embodiments of the first aspect of the invention, the m gratings are transmissive gratings of different center wavelengths.
According to some embodiments of the first aspect of the present invention, a light wave data transmission duration of the n narrow wave pulse light sources is k×t0, a light wave transmission pulse is T0, and an optical fiber code identification pulse is d×t0, where k is a fixed value and greater than d, and d is a dynamic value and greater than or equal to 4.
An all-optical switching communication method based on optical fiber coding addressable according to an embodiment of the second aspect of the present invention is applied to the all-optical switching communication system, and the all-optical switching communication method includes: the method comprises the steps of identifying optical fiber codes of adjacent devices, compiling an adjacent routing table, transmitting an initial routing table of the adjacent devices, reorganizing the routing table, communicating optical fibers of the adjacent devices and communicating optical fibers of designated devices.
According to the embodiment of the second aspect of the invention, the all-optical switching communication method based on the optical fiber coding addressing has at least the following beneficial effects: the scheme utilizes the unique optical identification of the optical fiber code to realize the point-to-point identification of a data sender and a data receiver, endows each optical communication device with optical addressee, realizes the direct simple analysis and identification of the receiver to the light wave, uses the optical address as the light wave transmission condition, and enables the transfer device to directly analyze and identify the light wave and directly transmit the light wave or directly transfer the light wave to a third device without pretreatment, thereby avoiding the photoelectric analysis and photoelectric conversion of the device.
According to some embodiments of the second aspect of the present invention, the identifying and compiling the adjacent routing table by the optical fiber code of the adjacent device includes:
the high-speed control module controls n narrow-wave pulse light sources to send full-wavelength light waves with specified pulse width to adjacent all-optical switching equipment;
the full-wavelength light wave is transmitted to the light receiving end of the adjacent all-optical switching equipment through the wavelength division multiplexer, the circulator, the first optical switch, the light emitting end and the optical cable optical fiber;
the optical fiber codes of adjacent all-optical switching equipment reflect the optical waves with corresponding central wavelengths, and the optical waves are acquired by an optical wave acquisition module and fed back to the high-speed control module for optical fiber code identification;
and establishing an adjacent routing table according to the identified optical fiber codes.
According to some embodiments of the second aspect of the present invention, the adjacent device initial routing table delivery, routing table reorganization includes the steps of:
driving a narrow-wave pulse light source corresponding to the central wavelength of the optical fiber code to transmit a light wave sequence with a specified pulse width according to the optical fiber code of the adjacent routing table, wherein the light wave sequence is converted into light wave pulses with alternate switches by information data to be transmitted;
the light wave pulse is sent to an external optical fiber cable through a wavelength division multiplexer, a circulator, a first optical switch and a light emitting end;
the all-optical switching equipment at the local end monitors the optical waves reflected by the optical fiber codes of the adjacent all-optical switching equipment through the optical wave acquisition module in real time so as to check whether the transmitted adjacent all-optical switching equipment is correct or not;
the light wave pulse is transmitted to the light receiving end and the second optical switch of the adjacent all-optical switching equipment through the external optical fiber cable, is collected by the photoelectric conversion module after being transmitted through optical fiber coding, is analyzed into information data by the high-speed control module, and is integrated with the initialized routing table to form a complete optical communication routing table.
According to some embodiments of the second aspect of the present invention, the adjacent device optical fiber communication includes the steps of:
according to the optical fiber codes of the adjacent routing tables, driving a narrow-wave pulse light source corresponding to the optical fiber codes to transmit a light wave sequence with a specified pulse width, wherein the light wave sequence is converted into light wave pulses with alternate switches by communication data to be transmitted;
the light wave pulse is sent to an external optical fiber cable through a wavelength division multiplexer, a circulator, a first optical switch and a light emitting end;
the all-optical switching equipment at the local end monitors the optical waves reflected by the optical fiber codes of the adjacent all-optical switching equipment through the optical wave acquisition module in real time so as to check whether the transmitted adjacent all-optical switching equipment is correct or not;
the light wave pulse is transmitted to the light receiving end and the second optical switch of the adjacent all-optical switching equipment through the external optical fiber cable, and is collected by the photoelectric conversion module after being transmitted through optical fiber coding, and the collected light wave pulse is analyzed into communication data by the high-speed control module.
According to some embodiments of the second aspect of the present invention, the designated device optical fiber communication includes the steps of:
the all-optical switching equipment at the local end transmits a forwarding light wave corresponding to the central wavelength of the optical fiber code according to the optical fiber code of the adjacent routing table, and detects whether the reflected light wave is consistent with the optical fiber code of the designated all-optical switching equipment in real time;
the middle all-optical switching equipment recognizes that the optical fiber code of the forwarding optical wave is inconsistent with the optical fiber code of the forwarding optical wave, and forwards the optical fiber code to the next all-optical switching equipment;
when the all-optical switching equipment at the local end detects that the reflected light wave is consistent with the optical fiber code of the designated all-optical switching equipment, the whole optical link is determined to be completely composed, and then the communication light wave is sent.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic diagram of an all-optical switching communication system according to an embodiment of the first aspect of the present invention;
fig. 2 is a schematic diagram of an all-optical switching device according to an embodiment of the present invention;
fig. 3 is a flowchart of an all-optical switching communication method according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1, an all-optical switching communication system based on optical fiber coding and addressing according to an embodiment of the first aspect of the present disclosure includes:
the system comprises a plurality of all-optical switching devices 100, in this embodiment, 3 devices are respectively denoted as a device a, a device B and a device C, and 3 all-optical switching devices 100 are connected in series through optical cable fibers;
as shown in fig. 2, each all-optical switching device 100 includes a first switching board 110 and a second switching board 120, which form a board set, and the high-speed control modules 1101 of the board set are mutually communicated to form data real-time communication; the first switch board 110 and the second switch board 120 each include a high-speed control module 1101, n narrow-wave pulse light sources 1102, a wavelength division multiplexer 1103, a circulator 1104, a light wave collecting module 1105, a first optical switch 1106, a light emitting end 1107, a light receiving end 1108, a second optical switch 1109, a beam splitter 1110, m gratings 1111 with different center wavelengths, and m photoelectric conversion modules 1112, where the m gratings 1111 with different center wavelengths form an optical fiber code of the end all-optical switching device 100; the number n of the narrow-wave pulse light sources 1102 is determined by the number of central wavelengths of optical fiber codes in the whole system, and the narrow-wave pulse light sources 1102 are controlled by a high-speed control module 1101 to select different light sources according to specified pulse width and transmit light waves simultaneously; the wavelength division multiplexer 1103 is configured to implement aggregation of multiple narrow-wave pulse light sources 1102, and the circulator 1104 implements optical wave transmission according to a specified transmission path.
The high-speed control module 1101 is respectively connected to the n narrow-wave pulse light sources 1102, the first optical switch 1106, the second optical switch 1109, and the m photoelectric conversion modules 1112 to send control instructions and receive signals; the n narrow-wave pulse light sources 1102, the wavelength division multiplexer 1103, the circulator 1104, the first optical switch 1106 and the light emitting end 1107 are sequentially connected, and the light wave acquisition module 1105 is connected between the circulator 1104 and the high-speed control module 1101; the light receiving end 1108, the second optical switch 1109, the optical splitter 1110, and m gratings 1111 with different center wavelengths are sequentially connected, the m gratings 1111 with different center wavelengths are connected with m photoelectric conversion modules 1112 in a one-to-one correspondence manner, and a switching channel of the first optical switch 1106 is connected with the second optical switch 1109; the high-speed control module 1101 controls a plurality of narrow-wave pulse light sources 1102 in the board to emit light according to a certain number of combinations and pulse time, controls two optical switches to switch according to instructions, and acquires data of the light wave acquisition module 1105 in real time so as to realize identification of optical fiber coding information; in addition, the optical switch is further used for collecting the data of the photoelectric conversion module 1112 in real time, analyzing and judging whether the data is the terminal data, and if not, switching the optical switch to the light emitting end 1107 of another board card to realize the communication light wave forwarding.
The high-speed control module 1101 of the first switch board 110 is communicatively connected to the high-speed control module 1101 of the second switch board 120, and the switching channel of the second optical switch 1109 of the first switch board 110 is connected to the first optical switch 1106 of the second switch board 120; when the first switch board 110 confirms the non-self optical wave communication, the optical wave channel is switched to the light emitting end 1107 of the second switch board 120, so that the optical wave can be switched to the next stage device, the switching time period is a fixed threshold value, and the optical wave channel is switched back when the switching time period exceeds the fixed threshold value;
the light emitting end 1107 and the light receiving end 1108 of the first switch board 110/the second switch board 120 are connected with the light receiving end 1108 and the light emitting end 1107 of the first switch board 110/the second switch board 120 adjacent to the all-optical switching device 100 through optical fibers.
The first optical switch 1106 and the second optical switch 1109 are both used for switching the number 0 port and the number 1 port (switching channels) of the optical wave, the switched channels are communicated with the number 2 port, the default is that the number 0 port realizes transmission from the circulator 1104 to the light emitting end 1107, when the high-speed control module 1101 judges that the opposite side transmission optical wave acquired by the photoelectric conversion module 1112 of the other board card is not the receiving data of the terminal, the optical switch is switched to the number 1 port to realize that the receiving optical wave of the other board card is transmitted to the next communication device through the board card, and the forwarding of the optical wave is realized.
The light wave acquisition module 1105 receives the optical fiber coding information of the opposite side equipment returned through the opening of the light emitting end 1107, and carries out wavelength decomposition and photoelectric conversion on the optical fiber coding light waves to realize light wave identification, energy acquisition and the like; the multiple photoelectric conversion modules 1112 run in parallel, and each photoelectric conversion module 1112 corresponds to a grating 1111 and a filter 1113 with different center wavelengths, so that energy collection and pulse time sequence collection of input light waves are realized, and the difference between the photoelectric conversion modules 1112 and the light wave collection module 1105 is that wavelength identification cannot be realized, but the photoelectric conversion module has low cost and high collection speed.
The scheme utilizes the unique optical identification of the optical fiber code to realize the point-to-point identification of a data sender and a data receiver, endows each optical communication device with optical addressee, realizes the direct simple analysis and identification of the receiver to the light wave, uses the optical address as the light wave transmission condition, and enables the transfer device to directly analyze and identify the light wave and directly transmit the light wave or directly transfer the light wave to a third device without pretreatment, thereby avoiding the photoelectric analysis and photoelectric conversion of the device.
In some embodiments of the first aspect of the present invention, m filters 1113 are disposed between the m gratings 1111 and the beam splitters 1110 in a one-to-one correspondence manner, and the m gratings 1111 are corresponding to the center wavelengths of the m filters 1113, so that the incident interference of the undesired center wavelengths can be further isolated, and the stability of the collected light waves can be ensured.
In some embodiments of the first aspect of the present invention, the m gratings 1111 are transmissive gratings 1111 with different center wavelengths, which are compatible with the light wave reflection and the corresponding light wave transmission functions, so that the transmissive gratings 1111 are preferred, and the reflective concave points, that is, the center wavelengths of the gratings 1111, can reflect light wave information with concave points and also realize light wave transmission.
In addition, in some embodiments of the first aspect of the present invention, the optical wave data transmission duration of the n narrow wave pulse light sources 1102 is k×t0, the optical wave transmission pulse is T0, and the optical fiber code identification pulse is d×t0, where k is a fixed value and greater than d, and d is a dynamic value and greater than or equal to 4, which is used as a rule of the present system.
As shown in fig. 3, an optical fiber coding-based addressable all-optical switching communication method according to an embodiment of the second aspect of the present invention is applied to the all-optical switching communication system, and the all-optical switching communication method includes: the method comprises the steps of identifying optical fiber codes of adjacent devices, compiling an adjacent routing table, transmitting an initial routing table of the adjacent devices, reorganizing the routing table, communicating optical fibers of the adjacent devices and communicating optical fibers of designated devices.
The scheme utilizes the unique optical identification of the optical fiber code to realize the point-to-point identification of a data sender and a data receiver, endows each optical communication device with optical addressee, realizes the direct simple analysis and identification of the receiver to the light wave, uses the optical address as the light wave transmission condition, and enables the transfer device to directly analyze and identify the light wave and directly transmit the light wave or directly transfer the light wave to a third device without pretreatment, thereby avoiding the photoelectric analysis and photoelectric conversion of the device.
In some embodiments of the second aspect of the present invention, the identifying and compiling the adjacent routing table by the optical fiber code of the adjacent device includes:
the high-speed control module 1101 controls the n narrow-wave pulse light sources 1102 to transmit full-wavelength light waves with a specified pulse width to the adjacent all-optical switching devices 100;
the full wavelength light wave is transmitted to the light receiving end 1108 of the adjacent all-optical switching device 100 through the wavelength division multiplexer 1103, the circulator 1104, the first optical switch 1106, the light emitting end 1107 and the optical cable optical fiber;
the optical fiber codes of the adjacent all-optical switching devices 100 reflect the optical waves with the corresponding central wavelengths, and the optical waves are acquired by the optical wave acquisition module 1105 and fed back to the high-speed control module 1101 for optical fiber code identification;
and establishing a neighboring routing table according to the identified optical fiber codes, and marking the direction existence device on the routing table when the neighboring device receives the designated pulse width.
Specific examples are as follows:
the first optical switch 1106 and the second optical switch 1109 are both opened to a number 0 port by default, the optical fiber codes of the adjacent devices identify, the high-speed control module 1101 of the device a drives all the narrow-wave pulse light sources 1102 to transmit pulse light waves with the length of d x T0 once, the pulse light waves are converged by the wavelength division multiplexer 1103 and then transmitted to the circulator 1104, the pulse light waves are transmitted to the first optical switch 1106 through the circulator 1104, the first optical switch 1106 is transmitted to the light emitting end 1107, the connected optical fiber cable 200 is transmitted to the light receiving end 1108 of the device B, the optical waves are transmitted to the optical fiber codes through the optical splitter 1110 of the device B, the optical waves are input to the photoelectric conversion module 1112 of the device B while the optical fiber codes reflect the corresponding optical waves, the device B receives the photoelectric signals acquired by the photoelectric conversion module 1112, whether all the photoelectric conversion modules 1112 simultaneously acquire the optical waves, and the pulse of the optical waves is d x T0 (if the pulse light waves are the data transmission signals, whether the data are received or transmitted downwards) are considered, and the optical fiber codes of other devices are identified and are not processed. The corresponding optical wave of optical fiber coded reflection is transmitted to the optical fiber cable 200 through the light receiving end 1108 of the equipment B and then transmitted to the light emitting end 1107 of the equipment A, is transmitted to the optical wave acquisition module 1105 of the equipment A through the circulator 1104 of the equipment A, is further acquired by the high-speed control module 1101 of the equipment A, and analyzes and calculates the corresponding optical fiber coded value, the distance and the reflected energy of the equipment B according to the waveform information. To this end, an identification scan of the neighboring devices is performed.
In some embodiments of the second aspect of the present invention, the adjacent device initial routing table delivery, routing table reorganization includes the steps of:
according to the optical fiber codes of the adjacent routing tables, driving the narrow-wave pulse light source 1102 with the optical fiber codes corresponding to the central wavelength to transmit a light wave sequence with a specified pulse width, wherein the light wave sequence is converted into light wave pulses with alternate switches by information data to be transmitted;
the light wave pulse is sent to the external optical fiber cable 200 through the wavelength division multiplexer 1103, the circulator 1104, the first optical switch 1106 and the light emitting end 1107;
the all-optical switching device 100 at the local end monitors the optical waves reflected by the optical fiber codes of the adjacent all-optical switching devices 100 through the optical wave acquisition module 1105 in real time so as to check whether the transmitted adjacent all-optical switching devices 100 are correct or not;
the light wave pulse is transmitted to the light receiving end 1108 and the second optical switch 1109 of the adjacent all-optical switching device 100 through the external optical fiber cable 200, is collected by the photoelectric conversion module 1112 after being transmitted through optical fiber coding, is analyzed into information data by the high-speed control module 1101, and is integrated with the initialization routing table to form a complete optical communication routing table.
Specific examples are as follows:
the first switch board 110 of device a needs to send routing table data to the second switch board 120 of device B. The high-speed control module 1101 of the first switch board 110 of the device a selects a plurality of narrowband pulse light sources according to the optical fiber coding information of the second switch board 120 of the device B in the routing table, and composes the data to be transmitted into pulse intervals according to the specification, for example, the information to be transmitted is composed into 110011, that is, the sequence of the transmitted light waves is 1 pulse light wave+1 pulse idle+1 pulse light wave+1 pulse light wave, the pulse time is T0, and the total length of the data pulse time is less than k×t0. The high-speed control module 1101 drives the specified narrow-wave pulse light source 1102 to simultaneously transmit light waves according to a system setting mode, the light waves are communicated with the first optical switch 1106 through the wavelength division multiplexer 1103 and the circulator 1104, the default channel of the first optical switch 1106 is from port 0 to port 2, the light waves are transmitted to the light emitting end 1107 through the first optical switch 1106, and the light waves are transmitted to the light receiving end 1108 of the second switch board 120 of the equipment B through the optical fiber cable 200. The light receiving end 1108 of the second switch board 120 of the device B transmits light waves to the second optical switch 1109, a default channel of the second optical switch 1109 is a port 0-port 2 intercommunication, an optical fiber code is transmitted, the optical fiber code is composed of an optical splitter 1110, a plurality of transmission gratings 1111 with different center wavelengths and a filter 1113, when the light waves enter the gratings 1111, the light waves are reflected back to the first switch board 110 of the device a, the light wave collecting module 1105 of the first switch board 110 of the device a collects the reflected data in real time, and the wavelength composition, the energy and the distance are analyzed to check whether the light waves are a sending object. The optical fiber codes in the second switch board card 120 of the equipment B transmit the light waves to the plurality of photoelectric conversion modules 1112 after the light waves are transmitted, the photoelectric conversion modules 1112 collect the energy of the light waves in real time, the pulse width and the time sequence of the light waves are analyzed, when the light waves of the photoelectric conversion modules 1112 collected by the high-speed control module 1101 of the second switch board card 120 of the equipment B need to be judged, only if all the photoelectric conversion modules 1112 have synchronous pulse light waves, the light waves required by the second switch board card 120 of the equipment B are confirmed (namely, the plurality of photoelectric conversion modules 1112 receive light wave information at the same time as judgment basis), if the light waves are not transmitted, the second optical switch 1109 is switched to the port 1, so that the intercommunication between the port 1 and the port 2 is realized, the light waves are transmitted to the port 1 of the first switch 1106 of the first switch board 110 of the equipment B, and the first switch board 110 of the equipment B is notified that the light waves are received by the first switch board 110 of the light waves, so that the port 1 and the port 2 are realized, and the light waves are transmitted downwards in the equipment B are communicated; if the second switch board 120 of the device B determines that the photoelectric conversion modules 1112 collected by the high-speed control module 1101 receive the same pulse light waves at the same time, the data are considered as the data of the device, and then the optical signal data of the plurality of photoelectric conversion modules 1112 are synchronously analyzed to form corresponding data information, and the routing table is integrated according to the data information, so as to complete the reconstruction of the whole network route.
In some embodiments of the second aspect of the present invention, the adjacent device optical fiber communication is similar to the adjacent device initial routing table transfer described above, except that the data types are different, the adjacent device optical fiber communication comprising the steps of:
according to the optical fiber codes of the adjacent routing tables, driving a narrow-wave pulse light source 1102 corresponding to the optical fiber codes with the central wavelength to transmit a light wave sequence with a specified pulse width, wherein the light wave sequence is converted into light wave pulses with alternate switches by communication data to be transmitted;
the light wave pulse is sent to the external optical fiber cable 200 through the wavelength division multiplexer 1103, the circulator 1104, the first optical switch 1106 and the light emitting end 1107;
the all-optical switching device 100 at the local end monitors the optical waves reflected by the optical fiber codes of the adjacent all-optical switching devices 100 through the optical wave acquisition module 1105 in real time so as to check whether the transmitted adjacent all-optical switching devices 100 are correct or not;
the light wave pulse is transmitted to the light receiving end 1108 and the second optical switch 1109 of the adjacent all-optical switching device 100 through the external optical fiber cable 200, and is collected by the photoelectric conversion module 1112 after being transmitted through optical fiber coding, and the collected light wave pulse is analyzed into communication data by the high-speed control module 1101.
In some embodiments of the second aspect of the present invention, the designated device fiber optic communication includes the steps of:
the all-optical switching device 100 at the local end transmits a forwarding light wave corresponding to the central wavelength of the optical fiber code according to the optical fiber code of the adjacent routing table, and detects whether the reflected light wave is consistent with the optical fiber code of the designated all-optical switching device 100 in real time;
if the intermediate all-optical switching device 100 recognizes that the optical fiber code of the forwarding optical wave is inconsistent with the optical fiber code of the intermediate all-optical switching device, forwarding the forwarding optical wave to the next all-optical switching device 100;
when the all-optical switching device 100 at the local end detects that the reflected light wave is consistent with the optical fiber code of the designated all-optical switching device 100, it is determined that the whole optical link is completely composed, and then the communication light wave is sent.
The technical scheme realizes the judgment of the light wave based on the unique identification characteristic and the unique transmission light wave characteristic of the optical fiber code, and carries out light wave forwarding based on the judgment.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An all-optical switching communication system based on optical fiber coding addressing is characterized in that: the system comprises a plurality of all-optical switching devices, wherein the all-optical switching devices are connected in series through optical cable fibers;
each all-optical switching device comprises a first switching board card and a second switching board card; the first exchange board card and the second exchange board card both comprise a high-speed control module, n narrow-wave pulse light sources, a wavelength division multiplexer, a circulator, a light wave acquisition module, a first optical switch, a light emitting end, a light receiving end, a second optical switch, a light splitter, m gratings with different center wavelengths and m photoelectric conversion modules, wherein the m gratings with different center wavelengths form optical fiber codes of the end all-optical exchange equipment; the high-speed control module is respectively connected with the n narrow-wave pulse light sources, the first optical switch, the second optical switch and the m photoelectric conversion modules to send control instructions and receive signals; the n narrow-wave pulse light sources, the wavelength division multiplexer, the circulator, the first optical switch and the light emitting end are sequentially connected, and the light wave acquisition module is connected between the circulator and the high-speed control module; the light receiving end, the second optical switch, the light splitter and the m gratings with different center wavelengths are sequentially connected, the m gratings with different center wavelengths are connected with the m photoelectric conversion modules in a one-to-one correspondence manner, and the switching channel of the first optical switch is connected with the second optical switch;
the high-speed control module of the first exchange board card is in communication connection with the high-speed control module of the second exchange board card, and the second optical switch switching channel of the first exchange board card is connected with the first optical switch of the second exchange board card; the high-speed control module is also used for controlling the first optical switch and the second optical switch to be switched according to whether the optical fiber codes acquired by the local-end photoelectric conversion module are matched or not, so as to determine a receipt or forward data to next-stage equipment;
the light emitting end and the light receiving end of the first exchange board card/the second exchange board card are connected with the light receiving end and the light emitting end of the first exchange board card/the second exchange board card adjacent to the all-optical exchange equipment through optical fibers.
2. An all-optical switching communication system addressable by fiber optic code according to claim 1, wherein: m filters are arranged between the m gratings and the beam splitters in a one-to-one correspondence manner, and the m gratings are consistent with the central wavelengths of the m filters in a corresponding manner.
3. An all-optical switching communication system addressable by optical fiber code according to claim 1 or 2, wherein: the m gratings are transmission gratings with different center wavelengths.
4. An all-optical switching communication system addressable by fiber optic code according to claim 1, wherein: the optical wave data transmission time length of the n narrow wave pulse light sources is k x T0, the optical wave transmission pulse is T0, the optical fiber coding identification pulse is d x T0, wherein k is a fixed value and is greater than d, and d is a dynamic value and is greater than or equal to 4.
5. An all-optical switching communication method based on optical fiber coding and addressable, which is applied to the all-optical switching communication system of any one of claims 1 to 4, and comprises the following steps: the method comprises the steps of identifying optical fiber codes of adjacent devices, compiling an adjacent routing table, transmitting an initial routing table of the adjacent devices, reorganizing the routing table, communicating optical fibers of the adjacent devices and communicating optical fibers of designated devices.
6. The method for optical fiber code addressable all-optical switching communication according to claim 5, wherein the identifying and compiling the adjacent routing table by the optical fiber code of the adjacent device comprises:
the high-speed control module controls n narrow-wave pulse light sources to send full-wavelength light waves with specified pulse width to adjacent all-optical switching equipment;
the full-wavelength light wave is transmitted to the light receiving end of the adjacent all-optical switching equipment through the wavelength division multiplexer, the circulator, the first optical switch, the light emitting end and the optical cable optical fiber;
the optical fiber codes of adjacent all-optical switching equipment reflect the optical waves with corresponding central wavelengths, and the optical waves are acquired by an optical wave acquisition module and fed back to the high-speed control module for optical fiber code identification;
and establishing an adjacent routing table according to the identified optical fiber codes.
7. The method for optical fiber code addressable all-optical switching communication according to claim 6, wherein: the adjacent device initial routing table transfer and routing table reorganization comprises the following steps:
driving a narrow-wave pulse light source corresponding to the central wavelength of the optical fiber code to transmit a light wave sequence with a specified pulse width according to the optical fiber code of the adjacent routing table, wherein the light wave sequence is converted into light wave pulses with alternate switches by information data to be transmitted;
the light wave pulse is sent to an external optical fiber cable through a wavelength division multiplexer, a circulator, a first optical switch and a light emitting end;
the all-optical switching equipment at the local end monitors the optical waves reflected by the optical fiber codes of the adjacent all-optical switching equipment through the optical wave acquisition module in real time so as to check whether the transmitted adjacent all-optical switching equipment is correct or not;
the light wave pulse is transmitted to the light receiving end and the second optical switch of the adjacent all-optical switching equipment through the external optical fiber cable, is collected by the photoelectric conversion module after being transmitted through optical fiber coding, is analyzed into information data by the high-speed control module, and is integrated with the initialized routing table to form a complete optical communication routing table.
8. The method for optical fiber code addressable all-optical switching communication according to claim 6, wherein: the adjacent equipment optical fiber communication comprises the following steps:
according to the optical fiber codes of the adjacent routing tables, driving a narrow-wave pulse light source corresponding to the optical fiber codes to transmit a light wave sequence with a specified pulse width, wherein the light wave sequence is converted into light wave pulses with alternate switches by communication data to be transmitted;
the light wave pulse is sent to an external optical fiber cable through a wavelength division multiplexer, a circulator, a first optical switch and a light emitting end;
the all-optical switching equipment at the local end monitors the optical waves reflected by the optical fiber codes of the adjacent all-optical switching equipment through the optical wave acquisition module in real time so as to check whether the transmitted adjacent all-optical switching equipment is correct or not;
the light wave pulse is transmitted to the light receiving end and the second optical switch of the adjacent all-optical switching equipment through the external optical fiber cable, and is collected by the photoelectric conversion module after being transmitted through optical fiber coding, and the collected light wave pulse is analyzed into communication data by the high-speed control module.
9. The method for optical fiber code addressable all-optical switching communication according to claim 6, wherein: the specified equipment optical fiber communication comprises the following steps:
the all-optical switching equipment at the local end transmits a forwarding light wave corresponding to the central wavelength of the optical fiber code according to the optical fiber code of the adjacent routing table, and detects whether the reflected light wave is consistent with the optical fiber code of the designated all-optical switching equipment in real time;
the middle all-optical switching equipment recognizes that the optical fiber code of the forwarding optical wave is inconsistent with the optical fiber code of the forwarding optical wave, and forwards the optical fiber code to the next all-optical switching equipment;
when the all-optical switching equipment at the local end detects that the reflected light wave is consistent with the optical fiber code of the designated all-optical switching equipment, the whole optical link is determined to be completely composed, and then the communication light wave is sent.
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| CN115567111A (en) * | 2022-09-13 | 2023-01-03 | 中山水木光华电子信息科技有限公司 | Communication terminal, system and method based on all-optical IP address |
| CN115865848A (en) * | 2022-12-09 | 2023-03-28 | 无锡芯光互连技术研究院有限公司 | Optical data packet switching method, device and storage medium |
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