CN114124288A - All-optical switching communication system and method based on optical fiber coding and addressing - Google Patents
All-optical switching communication system and method based on optical fiber coding and addressing Download PDFInfo
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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
Abstract
The invention discloses an all-optical switching communication system and a method based on optical fiber coding addressable, wherein the system comprises a plurality of all-optical switching devices which are connected in series through optical cables and 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, an optical splitter, m gratings with different central 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 addressing, takes the optical address as a light wave transmission condition, and the transfer device directly and simply analyzes and identifies the light wave and directly transmits the light wave or directly transfers the light wave to a third device without processing, 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 and addressing.
Background
In traditional optical fiber communication, especially in SDH self-healing ring communication, optical wave data needs to be subjected to photoelectric conversion and data analysis at an intermediate device, and then optical wave signals are transmitted to the next device until transmitted to a designated device. The optical communication self-healing ring is the foundation of the existing optical communication, and requires that the optical communication equipment has high computing capability and also has high energy consumption, for example, the photoelectric conversion, data analysis and photoelectric conversion of the intermediate equipment waste time and energy and increase the equipment burden.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an all-optical switching communication system and method based on optical fiber coding and addressing, which can reduce transmission time and processing energy.
An optical fiber coding-addressable all-optical switching communication system according to an embodiment of the first aspect of the present invention includes a plurality of all-optical switching devices, which are connected in series through optical fiber cables; 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, an optical splitter, m gratings with different central wavelengths and m photoelectric conversion modules; 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 so as 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 optical splitter and m gratings with different central wavelengths, wherein the m gratings with different central wavelengths are correspondingly connected with the m photoelectric conversion modules one by one, and a 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; and the light emitting end and the light receiving end of the first switching board card/the second switching board card are connected with the light receiving end and the light emitting end of the first switching board card/the second switching board card of the adjacent all-optical switching equipment through optical cables and optical fibers.
The optical fiber coding addressable all-optical switching communication system according to the embodiment of the first aspect of the invention 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 sending party and a data receiving party, endows each optical communication device with optical addressing, and realizes the direct simple analysis and identification of the receiving party on the light wave.
According to some embodiments of the first aspect of the present invention, m filters are disposed between m gratings and the optical splitter in a one-to-one correspondence, and the m gratings correspond to the center wavelengths of the m filters.
According to some embodiments of the first aspect of the present invention, m of the gratings are transmissive gratings of different center wavelengths.
According to some embodiments of the first aspect of the present invention, the lightwave data transmission duration of the n narrow-wave pulse light sources is k × T0, the lightwave transmission pulse is T0, and the fiber-coded 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.
According to a second aspect of the present invention, an optical fiber coding-addressable all-optical switching communication method is applied to the all-optical switching communication system, and the all-optical switching communication method includes: the method comprises the steps of optical fiber code identification of adjacent equipment, adjacent routing table compiling, adjacent equipment initial routing table transmission, routing table recombination, adjacent equipment optical fiber communication and specified equipment optical fiber communication.
The method for the all-optical switching communication based on the optical fiber coding addressable according to the embodiment of the second aspect of the present invention 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 sending party and a data receiving party, endows each optical communication device with optical addressing, and realizes the direct simple analysis and identification of the receiving party on the light wave.
According to some embodiments of the second aspect of the present invention, the identifying and compiling a neighbor routing table by the fiber codes of the neighbor devices 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 is transmitted to a light receiving end of adjacent all-optical switching equipment through a wavelength division multiplexer, a circulator, a first optical switch, a light emitting end and an optical cable fiber;
the optical fiber codes of the adjacent all-optical switching devices reflect light waves with corresponding central wavelengths, and the light waves are acquired by the light 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 neighbor device initial routing table delivery, routing table reassembly comprises the steps of:
according to the optical fiber codes of the adjacent routing tables, the narrow-wave pulse light source with the optical fiber codes corresponding to the central wavelength is driven to transmit an optical wave sequence with the appointed pulse width, and the optical wave sequence is converted into optical wave pulses between switch phases from 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 light waves reflected by the optical fiber codes of the adjacent all-optical switching equipment in real time through the light wave acquisition module so as to check whether the sent 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 an external optical fiber cable, is collected by the photoelectric conversion module after being transmitted by optical fiber codes, and the collected light wave pulse is analyzed into information data by the high-speed control module and is integrated with the initialization routing table to form a complete optical communication routing table.
According to some embodiments of the second aspect of the invention, the adjacent device optical fiber communication comprises the steps of:
according to the optical fiber codes of the adjacent routing tables, the narrow-wave pulse light source with the optical fiber codes corresponding to the central wavelength is driven to transmit an optical wave sequence with the appointed pulse width, and the optical wave sequence is converted into optical wave pulses between switch phases from 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 light waves reflected by the optical fiber codes of the adjacent all-optical switching equipment in real time through the light wave acquisition module so as to check whether the sent adjacent all-optical switching equipment is correct or not;
the light wave pulse is transmitted to the light receiving end of the adjacent all-optical switching equipment and the second optical switch through the external optical fiber cable, is collected by the photoelectric conversion module after being transmitted by the optical fiber codes, and is analyzed into communication data by the high-speed control module.
According to some embodiments of the second aspect of the present invention, the specified device optical fiber communication comprises the steps of:
the all-optical switching equipment at the local end sends 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 specified all-optical switching equipment in real time;
if the middle all-optical switching device recognizes that the optical fiber code for forwarding the optical wave is not consistent with the optical fiber code of the middle all-optical switching device, forwarding the optical fiber code to the next all-optical switching device;
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 specified 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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of 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
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, an optical fiber coding-addressable all-optical switching communication system according to an embodiment of the first aspect of the present invention includes:
the system comprises a plurality of all-optical switching devices 100, in the embodiment, 3 are taken as an example and are respectively marked as a device a, a device B and a device C, and the 3 all-optical switching devices 100 are connected in series through optical cables and optical fibers;
as shown in fig. 2, each of the all-optical switching devices 100 includes a first switching board 110 and a second switching board 120, which form a board group, and high-speed control modules 1101 of the board groups communicate with each other to form real-time data communication; the first switching board card 110 and the second switching board card 120 both 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 collection module 1105, a first optical switch 1106, a light emitting end 1107, a light receiving end 1108, a second optical switch 1109, an optical 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 local 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 the high-speed control module 1101 to select different light sources according to the specified pulse width and send light waves at the same time; the wavelength division multiplexer 1103 is configured to implement convergence of the multiple narrow-wave pulse light sources 1102, and the circulator 1104 implements light wave transmission according to a designated transmission path.
The high-speed control module 1101 is respectively connected with 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 collection module 1105 is connected between the circulator 1104 and the high-speed control module 1101; the optical transceiver 1108, the second optical switch 1109, the optical splitter 1110, and m gratings 1111 with different central wavelengths, where the m gratings 1111 with different central wavelengths are connected to the m photoelectric conversion modules 1112 in a one-to-one correspondence, and a switching channel of the first optical switch 1106 is connected to the second optical switch 1109; the high-speed control module 1101 controls a plurality of narrow-wave pulse light sources 1102 in the board card 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 optical wave acquisition module 1105 in real time so as to realize identification of optical fiber coding information; in addition, the optical switch is further configured to collect data of the photoelectric conversion module 1112 in real time, analyze and judge whether the data is the terminal data, and if not, switch the optical switch to the light emitting end 1107 of another board card to implement communication light wave forwarding.
The high-speed control module 1101 of the first switch board 110 is in communication connection with the high-speed control module 1101 of the second switch board 120, and the second optical switch 1109 of the first switch board 110 switches channels to be connected with the first optical switch 1106 of the second switch board 120; when the first switch board 110 determines that the optical wave communication is not self-contained, the received 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 is switched back when the fixed threshold value is exceeded;
the light emitting end 1107 and the light receiving end 1108 of the first switching board card 110/the second switching board card 120 are connected to the light receiving end 1108 and the light emitting end 1107 of the first switching board card 110/the second switching board card 120 of the adjacent all-optical switching device 100 through optical fiber cables.
The first optical switch 1106 and the second optical switch 1109 are used for switching a number 0 port and a number 1 port (switching channel) of a light wave, the switched channel is communicated with a number 2 port, the default is the number 0 port to realize transmission from the circulator 1104 to the light emitting end 1107, when the high-speed control module 1101 judges that the opposite side transmitting light 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 other board card receives the light wave and transmits the light wave to the next communication device through the board card, and the light wave forwarding is realized.
The optical wave acquisition module 1105 receives the optical fiber coded information of the opposite side device returned back through the mouth of the light emitting end 1107, and performs wavelength decomposition and photoelectric conversion on the optical fiber coded optical wave to realize optical wave identification, energy acquisition and the like; the photoelectric conversion modules 1112 run in parallel, each photoelectric conversion module 1112 corresponds to a grating 1111 and a filter 1113 with different central wavelengths, and the energy acquisition and pulse time sequence acquisition of input light waves are realized.
The scheme utilizes the unique optical identification of the optical fiber code to realize the point-to-point identification of a data sending party and a data receiving party, endows each optical communication device with optical addressing, and realizes the direct simple analysis and identification of the receiving party on the light wave.
In some embodiments of the first aspect of the present invention, m filters 1113 are disposed between m gratings 1111 and the optical splitter 1110 in a one-to-one correspondence manner, and the center wavelengths of the m gratings 1111 and the m filters 1113 are in correspondence, so that incident interference of an undesired center wavelength can be further isolated, and stability of a collected light wave can be guaranteed.
In some embodiments of the first aspect of the present invention, m of the gratings 1111 are transmissive gratings 1111 with different central wavelengths, which combine the functions of light wave reflection and corresponding light wave transmission, and for this purpose, the transmissive gratings 1111 are preferred to reflect the information of the light wave with pits at the positions of the pits, i.e. the central wavelengths of the gratings 1111, and also to realize the transmission of the light wave.
In some embodiments of the first aspect of the present invention, the transmission duration of the lightwave data of the n narrow-wave pulse light sources 1102 is k × T0, the lightwave transmission pulse is T0, and the fiber-coded identification pulse is d × T0, where k is a fixed value and is greater than d, and d is a dynamic value and is greater than or equal to 4.
As shown in fig. 3, an optical fiber coding-addressable all-optical switching communication method according to a second embodiment 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 optical fiber code identification of adjacent equipment, adjacent routing table compiling, adjacent equipment initial routing table transmission, routing table recombination, adjacent equipment optical fiber communication and specified equipment optical fiber communication.
The scheme utilizes the unique optical identification of the optical fiber code to realize the point-to-point identification of a data sending party and a data receiving party, endows each optical communication device with optical addressing, and realizes the direct simple analysis and identification of the receiving party on the light wave.
In some embodiments of the second aspect of the present invention, the identifying and compiling a neighbor routing table by the fiber codes of the neighbor devices comprises:
the high-speed control module 1101 controls the n narrow-wave pulse light sources 1102 to send full-wavelength light waves with specified pulse width to the adjacent all-optical switching device 100;
the full-wavelength light waves are transmitted to a light receiving end 1108 of the adjacent all-optical switching device 100 through a wavelength division multiplexer 1103, a circulator 1104, a first optical switch 1106, a light emitting end 1107 and an optical cable fiber;
the optical fiber codes of adjacent all-optical switching devices 100 reflect light waves with corresponding central wavelengths, and the light waves are acquired by the light wave acquisition module 1105 and fed back to the high-speed control module 1101 for optical fiber code identification;
and establishing an adjacent routing table according to the identified optical fiber codes, and marking the direction existing equipment on the routing table when the adjacent equipment receives the specified pulse width.
Specific examples are as follows:
the first optical switch 1106 and the second optical switch 1109 are both opened to the port No. 0 by default, the optical fiber codes of adjacent devices are identified, the high-speed control module 1101 of the device a drives all narrow-wave pulse light sources 1102 to send pulse light waves with the length of d × T0 once, the pulse light waves are converged by the wavelength division multiplexer 1103 and then transmitted to the circulator 1104, and transmitted to the first optical switch 1106 through the circulator 1104, and transmitted to the light emitting end 1107 through the first optical switch 1106, and transmitted to the light receiving end 1108 of the device B through the connected optical fiber cable 200, and the light waves are injected into the optical fiber codes through the optical splitter 1110 of the device B, the optical fiber codes reflect the corresponding light waves and simultaneously input the light waves into the photoelectric conversion module 1112 of the device B, the device B receives the photoelectric signals collected by the photoelectric conversion module 1112, determines whether the light waves are collected by all the photoelectric conversion modules 1112 at the same time, and the pulses of the light waves are d × T0 (if the signals are T0, whether the data is accepted or passed down) is determined as fiber code identification of other equipment and is not processed. The optical fiber code reflection corresponds to a light wave, which is transmitted to the optical fiber cable 200 through the light receiving end 1108 of the device B and then transmitted to the light emitting end 1107 of the device a, and is transmitted to the light wave collecting module 1105 of the device a through the circulator 1104 of the device a, and then is obtained by the high-speed control module 1101 of the device a, and the corresponding optical fiber code value, distance and reflection energy of the device B are analyzed and calculated according to the waveform information. For this purpose, an identification scan of neighboring devices is performed.
In some embodiments of the second aspect of the present invention, the neighbor device initial routing table delivery and routing table reassembly method comprises the following steps:
according to the optical fiber codes of the adjacent routing tables, the narrow-wave pulse light source 1102 with the optical fiber codes corresponding to the central wavelength is driven to transmit an optical wave sequence with the appointed pulse width, and the optical wave sequence is converted into optical wave pulses between switch phases from 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 to check whether the transmitted adjacent all-optical switching devices 100 are correct;
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 the optical fiber code, and the collected light wave pulse 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 the device a needs to send routing table data to the second switch board 120 of the device B. The high-speed control module 1101 of the first switch board 110 of the device a selects a plurality of narrowband pulsed light sources according to the optical fiber encoding information of the second switch board 120 of the device B in the routing table, and encodes data to be transmitted into pulse intervals according to a protocol, for example, information to be transmitted is encoded into 110011, that is, the transmission light wave sequence is 1 pulsed light wave +1 pulse idle +1 pulsed light wave, the pulse time is T0, and the total data pulse time is less than k × T0. The high-speed control module 1101 drives the designated narrow-wave pulse light source 1102 according to a system setting mode and simultaneously transmits light waves to the first optical switch 1106 through the wavelength division multiplexer 1103 and the circulator 1104, a default channel of the first optical switch 1106 is a channel from a port 0 to a port 2, the light waves are transmitted to a light emitting end 1107 through the first optical switch 1106, and the light waves are transmitted to a light receiving end 1108 of the second switch board 120 of the device B through the optical fiber cable 200. The light receiving end 1108 of the second switch board 120 of the device B transmits the light wave to the second optical switch 1109, the default channel of the second optical switch 1109 is the communication from the port 0 to the port 2, the optical fiber code is transmitted, the optical fiber code is composed of an optical splitter 1110, a plurality of transmission type gratings 1111 with different central wavelengths and a filter 1113, when the light wave enters the grating 1111, the light wave is reflected back to the first switch board 110 of the device a, the light wave acquisition module 1105 of the first switch board 110 of the device a acquires the reflected data in real time, the wavelength composition and the energy and distance are analyzed, and whether the light wave is a transmission object or not is checked. The optical fiber codes in the second switch board 120 of the device B transmit the optical waves to the plurality of photoelectric conversion modules 1112 respectively after the optical waves are transmitted, the photoelectric conversion modules 1112 collect the energy of the optical waves in real time and analyze the pulse width and the timing sequence of the optical waves, when the optical waves of the photoelectric conversion modules 1112 collected by the high-speed control module 1101 of the second switch board 120 of the device B need to be judged, the optical waves needed by the second switch board 120 of the device B are confirmed only after all the photoelectric conversion modules 1112 have synchronous pulse light waves (i.e. the plurality of photoelectric conversion modules 1112 receive the optical wave information at the same time as a judgment basis), if not, the second optical switch 1109 is switched to the port 1, so as to realize the intercommunication between the port 1 and the port 2, transmit the optical waves to the port 1 of the first optical switch 1106 of the first switch board 110 of the device B, and simultaneously notify the optical waves to transmit the first switch board 110 of the device B to receive the optical waves, the first switch board 110 of the device B switches the first optical switch 1106 to the port 1 to implement the intercommunication between the port 1 and the port 2, and implement the downward forwarding of the optical wave in the device B; 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 is regarded as data of the device, the optical signal data of the plurality of photoelectric conversion modules 1112 are synchronously analyzed to form corresponding data information, and a routing table is integrated according to the data information to complete reconstruction of the whole network routing.
In some embodiments of the second aspect of the present invention, the adjacent device fibre optic communications are similar to the adjacent device initial routing table transfers described above, differing only in the kind of data, and comprise the steps of:
according to the optical fiber codes of the adjacent routing tables, the narrow-wave pulse light source 1102 with the optical fiber codes corresponding to the central wavelength is driven to transmit an optical wave sequence with the appointed pulse width, and the optical wave sequence is converted into optical wave pulses between switch phases from 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 to check whether the transmitted adjacent all-optical switching devices 100 are correct;
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 the optical fiber code, 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 optical fiber communication comprises the steps of:
the all-optical switching device 100 at the home terminal sends 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 specified all-optical switching device 100 in real time;
if the middle all-optical switching device 100 recognizes that the optical fiber code for forwarding the optical wave is not consistent with the optical fiber code of the middle all-optical switching device, forwarding the optical fiber code 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 specified 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 the judgment is used as the basis for light wave forwarding.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 the invention. In this specification, the schematic representations of the terms used above do not necessarily 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.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An optical fiber coding addressable all-optical switching communication system, characterized in that: the system comprises a plurality of all-optical switching devices which are connected in series through optical cables and 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, an optical splitter, m gratings with different central wavelengths and m photoelectric conversion modules; 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 so as 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 optical splitter and m gratings with different central wavelengths, wherein the m gratings with different central wavelengths are correspondingly connected with the m photoelectric conversion modules one by one, and a 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;
and the light emitting end and the light receiving end of the first switching board card/the second switching board card are connected with the light receiving end and the light emitting end of the first switching board card/the second switching board card of the adjacent all-optical switching equipment through optical cables and optical fibers.
2. An optical fiber coding addressable all-optical switching communication system according to claim 1, characterized in that: m filters are arranged between the m gratings and the light splitter in a one-to-one correspondence mode, and the center wavelengths of the m gratings and the m filters are correspondingly consistent.
3. An optical fiber coding addressable all-optical switching communication system according to claim 1 or 2, characterized in that: the m gratings are transmission gratings with different central wavelengths.
4. An optical fiber coding addressable all-optical switching communication system according to claim 1, characterized in that: the light wave data transmission time length of the n narrow-wave pulse light sources is k × T0, the light wave transmission pulse is T0, and the optical fiber coding identification pulse is d × 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 addressable based on optical fiber coding, applied to the all-optical switching communication system of any one of claims 1 to 4, the all-optical switching communication method comprising: the method comprises the steps of optical fiber code identification of adjacent equipment, adjacent routing table compiling, adjacent equipment initial routing table transmission, routing table recombination, adjacent equipment optical fiber communication and specified equipment optical fiber communication.
6. The method for all-optical switching communication addressable based on optical fiber codes according to claim 5, wherein the identifying and compiling adjacent routing tables of the optical fiber codes of the adjacent devices 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 is transmitted to a light receiving end of adjacent all-optical switching equipment through a wavelength division multiplexer, a circulator, a first optical switch, a light emitting end and an optical cable fiber;
the optical fiber codes of the adjacent all-optical switching devices reflect light waves with corresponding central wavelengths, and the light waves are acquired by the light 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. An optical fiber coding addressable all-optical switching communication method according to claim 6, characterized in that: the adjacent equipment initial routing table transmission and routing table recombination comprises the following steps:
according to the optical fiber codes of the adjacent routing tables, the narrow-wave pulse light source with the optical fiber codes corresponding to the central wavelength is driven to transmit an optical wave sequence with the appointed pulse width, and the optical wave sequence is converted into optical wave pulses between switch phases from 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 light waves reflected by the optical fiber codes of the adjacent all-optical switching equipment in real time through the light wave acquisition module so as to check whether the sent 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 an external optical fiber cable, is collected by the photoelectric conversion module after being transmitted by optical fiber codes, and the collected light wave pulse is analyzed into information data by the high-speed control module and is integrated with the initialization routing table to form a complete optical communication routing table.
8. An optical fiber coding addressable all-optical switching communication method according to claim 6, characterized in that: the adjacent equipment optical fiber communication comprises the following steps:
according to the optical fiber codes of the adjacent routing tables, the narrow-wave pulse light source with the optical fiber codes corresponding to the central wavelength is driven to transmit an optical wave sequence with the appointed pulse width, and the optical wave sequence is converted into optical wave pulses between switch phases from 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 light waves reflected by the optical fiber codes of the adjacent all-optical switching equipment in real time through the light wave acquisition module so as to check whether the sent adjacent all-optical switching equipment is correct or not;
the light wave pulse is transmitted to the light receiving end of the adjacent all-optical switching equipment and the second optical switch through the external optical fiber cable, is collected by the photoelectric conversion module after being transmitted by the optical fiber codes, and is analyzed into communication data by the high-speed control module.
9. An optical fiber coding addressable all-optical switching communication method according to claim 6, characterized in that: the optical fiber communication of the specified equipment comprises the following steps:
the all-optical switching equipment at the local end sends 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 specified all-optical switching equipment in real time;
if the middle all-optical switching device recognizes that the optical fiber code for forwarding the optical wave is not consistent with the optical fiber code of the middle all-optical switching device, forwarding the optical fiber code to the next all-optical switching device;
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 specified 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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