Optical signal processing device and method, and optical communication system

Abstract

The embodiment of the invention discloses optical signal processing equipment, an optical signal processing method and an optical communication system, which can be applied to an optical add-drop multiplexing node in the optical communication system and solve the problem of'fiber connection verification 'between the optical signal processing equipment and an OTU (Optical Transport Unit). In the optical signal processing equipment, an optical signal processor is used for outputting an input optical signal to an optical signal analysis unit. The optical signal is an optical signal input from an optical transceiver unit or output to an optical transceiver unit via any first port of the optical signal processing device. The optical signal analysis unit comprises at least one photoelectric conversion subunit and a coding and decoding subunit. And the photoelectric conversion subunit is used for converting an optical signal from the optical signal processor into an electric signal. And the coding and decoding subunit is used for decoding the electric signal to obtain signal identification information carried by the optical signal so as to determine the optical transceiver unit connected with the first port through which the optical signal passes. The optical signal processing equipment is simple in hardware structure and high in evolvability.

Description

Technical Field

[0001] The present application relates to the field of optical communication technology, and in particular to an optical signal processing device, method and optical communication system. Background Art

[0002] Optical add / drop multiplexing (OADM) nodes usually exist in an optical communication system based on wavelength division multiplexing (WDM) technology. Figure 1 A schematic diagram of the structure of an optical communication system is shown as an example. Figure 1 As shown, the optical communication system includes a plurality of optical add / drop multiplexing nodes. At the optical add / drop multiplexing nodes, the two sides of the optical cross-connection device are respectively connected to the transmission optical fiber through at least one line unit. Through the line unit, optical signals of one or more dimensions / directions can be output to the transmission optical fiber, and optical signals from the transmission optical fiber can also be input to the optical cross-connection device. In addition, the optical cross-connection device is also connected to at least one optical transceiver unit (OTU) through at least one branch unit. Among them, the branch unit is mainly composed of a combiner / demultiplexer, which can output the optical signal emitted by the optical transceiver device connected to any one or more input ports to the optical cross-connection device through any one or more output ports, and can also output any one or more optical signals input to the optical cross-connection device to the connected optical transceiver device unit through any one or more output ports.

[0003] Based on the optical communication system in the above example, it can be seen that there are a large number of optical fiber connections between the branch unit and the optical transceiver device. The optical fiber connection relationship is complex, and the boards at both ends of the optical fiber are usually distributed on different optical communication devices. Therefore, it is difficult and inefficient to manually verify the correctness of the optical fiber connection relationship. How to automatically verify the correctness of the optical fiber connection relationship to improve the operation and maintenance efficiency of the optical communication system and reduce the time for network opening and fault recovery is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide an optical signal processing device, an optical signal processing method, an optical communication system, an electronic device, and a computer-readable storage medium, the main purpose of which is to solve the problem of "fiber connection verification" between the optical signal processing device and the OTU during the system startup stage and the system operation stage. The optical signal processing device and the optical signal processing method include but are not limited to being applied to optical add / drop multiplexing nodes in an optical communication system (such as WDM), for example, being applied between an OADM device and an OTU in an optical communication system to achieve uplink transmission and / or downlink transmission of optical signals between the OADM device and the OTU.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an optical signal processing device, including an optical signal processor and an optical signal parsing unit connected to the optical signal processor; the optical signal processor includes a plurality of signal transmission ports, wherein at least one signal transmission port is used to connect to an optical transceiver device unit. If the signal transmission port used to connect to the optical transceiver device unit is called a first port, then at least one of the plurality of signal transmission ports of the optical signal processor is a first port. The optical signal processor is used to output an input optical signal to the optical signal parsing unit. The optical signal is an optical signal input from an optical transceiver device unit via any first port or output to an optical transceiver device unit via any first port, and the optical signal carries signal identification information. The optical signal parsing unit includes at least one optoelectronic conversion subunit and a codec subunit connected to the optoelectronic conversion subunit. The optoelectronic conversion subunit is used to convert an optical signal from the optical signal processor into an electrical signal. The codec subunit is used to decode the electrical signal to obtain signal identification information. Among them, the signal identification information is used to determine the optical transceiver device unit connected to the first port via which the optical signal passes.

[0007] In the first aspect, the optical signal may be an uplink optical signal emitted by any one or more OTUs, each uplink optical signal is input to an optical signal processor via a first port, and then output to an optical signal analysis unit via the optical signal processor, and finally the optical signal analysis unit decodes the signal identification information (e.g., identification information of the OTU, such as the network element IP address, slot number, optical port number, etc.) from each uplink optical signal, and then determines the OTU corresponding to each uplink optical signal. When the first port through which each uplink optical signal passes is known, the relevant information of the OTU connected to the first port through which each uplink optical signal passes can be determined.

[0008] In the first aspect, the optical signal may also be a downstream optical signal from an optical network, and each downstream optical signal is input to an optical signal processor via a downstream input port of an optical signal processor. On the one hand, the optical signal processor outputs such a downstream optical signal to an optical signal analysis unit, so that the signal identification information can be decoded from the downstream optical signal through the optical signal analysis unit; on the other hand, the optical signal processor also outputs such a downstream optical signal to an OTU connected to the first port, so as to decode the signal identification information from the downstream optical signal received by the OTU. By comparing the signal identification information obtained by the optical signal analysis unit and the signal identification information obtained by the OTU, it can be determined which OTU each downstream optical signal is received by, so that, when the first port through which each downstream optical signal passes is known, the OTU connected to the first port through which each downstream optical signal passes can be determined.

[0009] The optical signal processing device provided in the embodiment of the present application can automatically and autonomously complete the "fiber connection check" between itself and the OTU in the system startup stage, ensuring that the optical signal emitted by the OTU and entering the optical communication system meets expectations, and avoiding unpredictable effects on the subsequent operation of the optical system. In addition, the optical signal processing device can also automatically and autonomously complete the "fiber connection check" between itself and the OTU in the system operation stage, ensuring that the optical communication system meets business requirements for the transmission of the optical signal emitted by the OTU and the optical signal from the optical network. Moreover, since the optical signal analysis unit includes at least one optoelectronic conversion subunit and one encoding and decoding subunit, it can complete the "fiber connection check" in the system startup stage and the system operation stage. Therefore, the device structure is simple, hardware costs are saved, and it is not affected by the expansion of the number of ports of the optical signal processor, and it has strong evolvability.

[0010] In combination with the first aspect, in a possible implementation of the first aspect, the optical signal analysis unit includes an optoelectronic conversion subunit, and the multiple signal transmission ports of the optical signal processor include multiple output ports. The optical signal processor is connected to the one optoelectronic conversion subunit through a target output port. The target output port is one of the multiple output ports. In this implementation, after the optical signal processor receives an optical signal input by any signal transmission port, the optical signal can be output from the target output port to the optoelectronic conversion subunit, so that the optoelectronic conversion is completed by the optoelectronic conversion subunit, and then the codec subunit decodes the signal identification information from the electrical signal.

[0011] For example, the photoelectric conversion subunit may be a photoelectric conversion device, such as a photodiode.

[0012] In combination with the first aspect, in a possible implementation of the first aspect, the optical signal processing device also includes at least one optical amplifier, and each optical amplifier includes a photoelectric conversion device. The optical signal processor is connected to each optical amplifier. The photoelectric conversion subunit is a photoelectric conversion device included in any one of the at least one optical amplifier. It should be understood that the photoelectric conversion device of the optical amplifier is used to convert the received uplink optical signal into an electrical signal, and perform power detection to control the optical amplifier to amplify the received optical signal. In this implementation, the optical signal analysis unit uses the photoelectric conversion device of an optical amplifier in the optical signal processing device as the photoelectric conversion subunit, or in other words, the photoelectric conversion subunit of the optical signal analysis unit also undertakes the optical power detection and control work before the optical signal amplification processing, thereby realizing the functional multiplexing of the photoelectric conversion device of an optical amplifier, and there is no need to set up an additional photoelectric conversion subunit, thereby achieving the purpose of simplifying the device structure and saving hardware costs.

[0013] In combination with the first aspect, in a possible implementation of the first aspect, the optical signal analysis unit includes N photoelectric conversion subunits. The optical signal processing device includes N optical amplifiers; N is an integer greater than 1, and each optical amplifier includes a photoelectric conversion device. The optical signal processor is connected to each optical amplifier and is used to output the input optical signal to any optical amplifier. The photoelectric conversion devices of the N optical amplifiers are used to implement the N photoelectric conversion subunits, and the photoelectric conversion devices of the N optical amplifiers correspond one-to-one to the N photoelectric conversion subunits. In this implementation, the optical signal analysis unit uses the photoelectric conversion devices of the N optical amplifiers as N photoelectric conversion subunits. After the photoelectric conversion devices of each optical amplifier receive the optical signal, on the one hand, the photoelectric conversion is completed, and the converted electrical signal is transmitted to the encoding and decoding subunit, so that the signal identification information is decoded from the electrical signal corresponding to the optical signal through the encoding and decoding subunit to realize "fiber connection verification"; on the other hand, the optical power of the optical signal is detected to control the optical amplifier to amplify the optical power of the optical signal. The amplified optical signal can be output to the optical network or OTU. Since each optoelectronic conversion sub-unit of the optical signal analysis unit is also responsible for the optical power detection and control work before the optical signal amplification processing, the functional multiplexing of the optoelectronic conversion devices of each optical amplifier is realized, and there is no need to set up additional optoelectronic conversion sub-units, thereby achieving the purpose of simplifying the equipment structure and saving hardware costs.

[0014] In combination with the first aspect, in a possible implementation of the first aspect, the multiple signal transmission ports of the optical signal processor include multiple uplink output ports. The above-mentioned first port includes an uplink input port. In the case where the optical signal is input by the optical transceiver device unit through the uplink input port, the target output port is any one of the multiple uplink output ports.

[0015] In combination with the first aspect, in a possible implementation manner of the first aspect, the multiple signal transmission ports of the optical signal processor include multiple uplink output ports, and the optical signal processor is connected to different optical amplifiers through different uplink output ports.

[0016] In combination with the first aspect, in a possible implementation manner of the first aspect, the signal identification information carried by the optical signal includes identification information of an optical transceiver device unit that inputs the optical signal.

[0017] In combination with the first aspect, in a possible implementation of the first aspect, the multiple signal transmission ports of the optical signal processor include multiple downstream input ports, and the above-mentioned first port includes a downstream output port; when the optical signal is output from the downstream output port to the optical transceiver device unit, the target output port is any one of the multiple downstream output ports.

[0018] In combination with the first aspect, in a possible implementation of the first aspect, the multiple signal transmission ports of the optical signal processor include multiple downstream output ports, and the optical signal processor is connected to different optical amplifiers through different downstream output ports. The N optical amplifiers are respectively connected to different optical transceiver device units, and each optical amplifier is used to amplify the input optical signal and output the processed optical signal to the connected optical transceiver device unit.

[0019] In combination with the first aspect, in a possible implementation of the first aspect, the optical signal processing device includes M optical signal processors and N combiners, where M is an integer greater than 1; the M optical signal processors are connected to the same optical amplifier through a combiner; the combiner is used to combine optical signals from different optical signal processors into one and output it to the connected optical amplifier. In this implementation, the optical signal processing device includes multiple optical signal processors. Among them, one or more optical signals output by each optical signal processor can be combined through a combiner and then output to the same optoelectronic conversion subunit, and then "fiber connection verification" of multiple optical signal processors can be achieved through as few optoelectronic conversion subunits as possible. Thereby, the device structure is simplified and hardware costs are saved.

[0020] In combination with the first aspect, in a possible implementation of the first aspect, the multiple signal transmission ports of the optical signal processing device include multiple uplink output ports, and the optical signal processor is connected to different combiners through different uplink output ports, and one uplink output port is connected to one combiner.

[0021] In combination with the first aspect, in a possible implementation of the first aspect, the multiple signal transmission ports of the optical signal processing device include multiple downstream output ports, and the optical signal processor is connected to different combiners through different downstream output ports, and one downstream output port is connected to one combiner.

[0022] In combination with the first aspect, in a possible implementation manner of the first aspect, the optical signal processor includes a wavelength combiner / demultiplexer.

[0023] In a second aspect, an embodiment of the present application provides an optical communication system, comprising any one of the above-mentioned optical signal processing devices.

[0024] In a third aspect, an embodiment of the present application provides an optical signal processing method, which is applied to an optical signal processing device, wherein the optical signal processing device includes an optical signal processor and an optical signal parsing unit connected to the optical signal processor; the optical signal processor includes a plurality of signal transmission ports, at least one first port of the plurality of signal transmission ports is used to be connected to an optical transceiver device unit; the optical signal parsing unit includes at least one photoelectric conversion subunit and a coding and decoding subunit connected to the photoelectric conversion subunit; the optical signal processing method includes:

[0025] The optical signal processor outputs the input optical signal to the optical signal analysis unit; the photoelectric conversion subunit converts the optical signal from the optical signal processor into an electrical signal; the encoding and decoding subunit decodes the electrical signal to obtain the signal identification information carried in the optical signal. The optical signal is an optical signal input from the optical transceiver device unit via any first port or output to the optical transceiver device unit via any first port, and the signal identification information is used to determine the optical transceiver device unit connected to the first port through which the optical signal passes.

[0026] In combination with the third aspect, in a possible implementation of the third aspect, the optical signal analysis unit includes N photoelectric conversion sub-units; the optical signal processing device includes N optical amplifiers; N is an integer greater than 1; each optical amplifier includes a photoelectric conversion device; the optical signal processor is connected to each optical amplifier; the photoelectric conversion devices of the N optical amplifiers are used to implement the N photoelectric conversion sub-units, and the photoelectric conversion devices of the N optical amplifiers correspond one-to-one to the N photoelectric conversion sub-units.

[0027] In the optical signal processing method, the optical signal processor outputs the input optical signal to the optical signal analysis unit, including: the optical signal processor outputs the input optical signal to the photoelectric conversion device of any optical amplifier.

[0028] In combination with the third aspect, in a possible implementation manner of the third aspect, the multiple signal transmission ports of the optical signal processor include multiple downstream output ports, and the optical signal processor is connected to different optical amplifiers through different downstream output ports; the N optical amplifiers are respectively connected to different optical transceiver device units;

[0029] The optical signal processing method further includes:

[0030] Each optical amplifier amplifies the input optical signal and outputs the processed optical signal to the connected optical transceiver device unit.

[0031] In combination with the third aspect, in a possible implementation of the third aspect, the optical signal processing device includes M optical signal processors and N combiners, where M is an integer greater than 1; the M optical signal processors are connected to the same optical amplifier through a combiner.

[0032] In the optical signal processing method, the optical signal processor outputs the input optical signal to the photoelectric conversion device of any optical amplifier, including:

[0033] The optical signal processor outputs the input optical signal to the combiner; the combiner combines the optical signals from different optical signal processors into one and then outputs it to the photoelectric conversion device of the connected optical amplifier.

[0034] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising a memory and a processor, wherein the memory is coupled to the processor; the memory stores computer program code, and the computer program code comprises computer instructions. When the computer instructions are executed by the processor, the electronic device implements the function of the optical signal parsing unit in the optical signal processing device described in any one of the above items, or enables the electronic device to perform the action performed by the optical signal parsing unit in the optical signal processing method described in any one of the above items.

[0035] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, comprising computer program instructions. When the computer program instructions are executed by a processor of an electronic device, the electronic device implements the functions of the optical signal parsing unit in the optical signal processing device described in any one of the above items, or enables the electronic device to perform the actions performed by the optical signal parsing unit in the optical signal processing method described in any one of the above items.

[0036] Among them, the technical effects brought about by any design method in the second to fifth aspects can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the structure of an optical communication system provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of a "fiber connection verification" solution of the related technology;

[0039] Figure 3 A schematic diagram of another "fiber connection verification" solution of the related art;

[0040] Figure 4 A schematic diagram of another "fiber connection verification" solution of the related art;

[0041] Figure 5 A schematic diagram of the structure of an optical signal processing device provided in an embodiment of the present application;

[0042] Figure 6 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0043] Figure 7 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0044] Figure 8 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0045] Fig. 9 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0046] Fig.10 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0047] Fig.11 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0048] Fig.12 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0049] Fig.13 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0050] Fig.14 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0051] Fig.15 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0052] Fig.16 A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0053] Fig.17A schematic diagram of the structure of another optical signal processing device provided in an embodiment of the present application;

[0054] Fig.18 A schematic diagram of a process flow of an optical signal processing method provided in an embodiment of the present application;

[0055] Fig.19 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0057] In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the present application is merely a description of the association relationship between associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0058] Furthermore, in the description of the embodiments of the present application, unless otherwise specified, "plurality" refers to two or more than two. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit the difference.

[0059] Meanwhile, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner for ease of understanding.

[0060] In addition, the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0061] Before introducing the technical solutions of the embodiments of the present application, the terms involved in the embodiments of the present application are first explained.

[0062] Wavelength Division Multiplexing (WDM) is a technology that combines two or more optical carrier signals of different wavelengths (carrying various information) at the transmitting end through a multiplexer (also called a combiner, Multiplexer) and couples them to the same optical fiber of the optical line for transmission. At the receiving end, the optical carriers of various wavelengths are separated by a demultiplexer (also called a wavelength splitter or a demultiplexer), and then further processed by the optical receiver to restore the original signal. This technology of simultaneously transmitting two or more optical signals of different wavelengths in the same optical fiber is called wavelength division multiplexing.

[0063] Optical add / drop multiplexing (OADM) is one of the key components of wavelength division multiplexing (WDM) optical networks. Its function is to selectively receive and send certain wavelength channels locally up and down from the transmission optical path without affecting the transmission of other wavelength channels.

[0064] Optical transponder unit (OTU), also known as optical conversion unit. OTU first performs optical / electrical (O / E) conversion on the multiplexed optical channel signal that complies with the G.957 specification, then performs shaping, timing extraction and data regeneration (data regeneration may not be performed) on the converted electrical signal, and finally performs electrical / optical (E / O) conversion to output DWDM multiplexed optical channel signals that meet the requirements of the G.692 specification in terms of wavelength, dispersion and luminous power. If only shaping and timing processing are performed after O / E conversion, the OTU only realizes the function of wavelength conversion and the transmission distance is short. If shaping, timing and regeneration processing are performed after O / E conversion, the OTU actually has the function of a regeneration repeater (REG). According to the different positions in the wavelength division (WDM) system, it is divided into the transmitting end OTU, the OTU as a regeneration repeater and the receiving end OTU.

[0065] The signal receiving end mentioned in the embodiment of the present application may be a receiving optical sub-assembly (ROSA), and the signal transmitting end may be a transmitting optical sub-assembly (TOSA).

[0066] The "fiber connection check" mentioned in the embodiments of the present application includes but is not limited to referring to, for example, Figure 1 The optical fiber connection relationship between the branch unit and the OTU in the optical communication system shown is verified, for example, the OTU to which the signal transmission port of the branch unit is connected is verified.

[0067] "Fiber connection verification" usually occurs in two stages, including the system startup stage and the system operation stage. In the system startup stage, before the branch unit establishes the cross-connection between the OTU and the optical cross-connection device, the "fiber connection verification" verifies that the fiber connection relationship between the branch unit and each OTU is as expected, thereby ensuring that after the system is running, the optical signal entering the optical communication system meets the business expectations, and / or ensures that the optical signal received by each OTU meets the business expectations. In the system operation stage, it is necessary to use "fiber connection verification" to instantly ensure that the fiber connection relationship between the branch unit and each OTU is correct without affecting the normal operation of the system, that is, without affecting the normal transmission of the optical signal required by the business, thereby preventing the optical communication system signal transmission disorder and ensuring the realization of business functions.

[0068] like Figure 2 As shown, in some related technologies, a photodiode (PD) array is set between the branch unit and the OTU, and the photodiode array includes multiple photodiodes. In the system startup stage or system operation stage, when the OTU sends an optical signal, the photodiode receives it and completes the photoelectric conversion, thereby completing the "fiber connection check" between the branch unit and the OTU.

[0069] However, Figure 2 In the related technology shown, since a photodiode needs to be additionally provided at each signal transmission port (such as an input port) of the branch unit, the required hardware cost is relatively high, and as the number of signal transmission ports of the branch unit increases, it means that the number of photodiodes also needs to increase accordingly to meet the "fiber connection verification" requirement during the system operation phase, otherwise, this requirement cannot be met. In other words, the scalability of this technical solution is poor.

[0070] like Figure 3 As shown, in other related technologies, the output port of the OTU is connected to the input port of the branch unit close to the OTU side by optical fiber, so that the optical signal emitted by the OTU can enter the branch unit and then be output by any output port of the branch unit close to the optical cross-connection device. At the same time, the output port of the branch unit close to the optical cross-connection device is looped back to the input port on the same side, and the output port of the branch unit close to the OTU side is connected to the OTU, so that the optical signal originally emitted by the OTU enters the branch unit again and is output to the OTU by the output port of the branch unit close to the OTU side. On this basis, the optical fiber connection relationship between the input port of the branch unit close to the OTU side and the OTU can be verified by technical means such as power disturbance.

[0071] However, Figure 3In the related technology shown, since it is necessary to establish a loop connection from the output port to the input port on the side of the branch unit close to the optical cross-connection device to establish an optical path from the OTU (optical transmitting component) to the OTU (optical receiving component), it will affect the normal transmission of optical signals required for the business during the system operation phase. Therefore, it only supports the "fiber connection verification" in the system startup phase, and does not support the "fiber connection verification" in the system operation phase.

[0072] In addition, if Figure 4 As shown, in some other related technologies, a fiber connection between different devices located on the same board in an optical communication system is established through a ribbon fiber, thereby physically binding the fiber connection relationship between the devices. In this way, it is only necessary to verify the devices connected at both ends of an optical fiber in the ribbon fiber, which is equivalent to completing the verification of the overall connection relationship of the ribbon fiber, thereby reducing the complexity of the "fiber connection verification" process. However, since this method requires that the devices connected at both ends of the ribbon fiber are located on the same board, and the OTU and the branch unit are usually located on different boards, this method cannot achieve "fiber connection verification" between the OTU and the branch unit.

[0073] In view of this, an embodiment of the present application provides an optical signal processing device, which can be applied to an optical add / drop multiplexing node in an optical communication system, for example, Figure 1 The branch unit shown in . The optical signal processing device can automatically and autonomously complete the "fiber connection check" between itself and the OTU during the system startup phase, ensuring that the optical signal sent by the OTU and entering the optical communication system meets business expectations and avoids unpredictable impacts on the subsequent operation of the optical system. In addition, the optical signal processing device can also automatically and autonomously complete the "fiber connection check" between itself and the OTU during the system operation phase, ensuring that the optical communication system meets business requirements for the transmission of optical signals sent by the OTU and optical signals from the optical network.

[0074] The optical signal processing device provided in the embodiment of the present application may include an optical signal processor and an optical signal parsing unit. The optical signal processor includes multiple signal transmission ports, and the signal transmission ports may be input ports for inputting signals, or output ports for outputting signals. Among them, at least one signal transmission port is used to connect to an optical transceiver device unit. If the signal transmission port used to connect to the optical transceiver device unit is called a first port, then at least one of the multiple signal transmission ports of the optical signal processor is a first port. The optical signal parsing unit includes at least one optoelectronic conversion subunit and a coding and decoding subunit connected to the optoelectronic conversion subunit. The optical signal processor is connected to the optical signal parsing unit. The optical signal processor is used to receive an optical signal input by any input port and output the optical signal to the optical signal parsing unit, which can output multiple optical signals to the same optoelectronic conversion subunit, or to different optoelectronic conversion subunits. Figure 5 As shown, for the optical signal P1 and the optical signal P2 inputted from any input port, the optical signal processor can output both the optical signal P1 and the optical signal P2 to the same optoelectronic conversion subunit, or can output the optical signal P1 and the optical signal P2 to different optoelectronic conversion subunits respectively. The optoelectronic conversion subunit is used to obtain the optical signal from the optical signal processor and convert the optical signal into an electrical signal; the encoding and decoding subunit is used to decode the acquired electrical signal to obtain the signal identification information carried by the optical signal. Based on the signal identification information and the first port through which the optical signal passes, relevant information of the optical transceiver device unit connected to the first port through which the optical signal passes can be determined, such as identification information and configuration information of the optical transceiver device unit.

[0075] Among them, when the optical signal processing device is applied to an optical communication system, the optical signal processor can be connected to the optical cross-connect device on the "line side" so that it can receive optical signals from the optical network. The optical signal processor can also be connected to the optical fibers of one or more signal sending ends on the "client side" respectively, so that it can respectively receive optical signals emitted by the one or more signal sending ends, and output these optical signals to the optical cross-connect device on the "line side". The optical signal processor can also be connected to one or more signal receiving ends on the "client side" respectively, so that it can output optical signals from the "line side" to the corresponding signal receiving ends on the "client side". It should be noted that the "client side" is a concept relative to the "line side". Combined with Figure 5, the side of the optical cross-connection device close to the optical signal processing device is the "client side", and the optical signal processing device and the signal sending end and signal receiving end connected to it through optical fiber (usually an OTU integrates a signal sending end and a signal receiving end) are all located on the "client side". The side of the optical signal processing device close to the optical cross-connection device is the "line side", and the optical cross-connection device and the transmission optical fiber connected to its two ends are all located on the "line side". For the sake of convenience, the optical signal emitted by the signal sending end of the "client side" is referred to as the uplink optical signal, and the optical signal transmitted from the "line side" is referred to as the downlink optical signal.

[0076] That is to say, in the embodiment of the present application, the optical signal received by the optical signal processor may be an uplink optical signal emitted by the OTU on the "client side" at the near end, or an optical signal emitted by the OTU at the far end, that is, a downlink optical signal from the "line side". The optical signal processing device provided in the embodiment of the present application can receive the uplink optical signal emitted by the OTU on the "client side" at the near end through the optical signal processor, and output the received uplink optical signal to the optical signal parsing unit. And / or, the downlink optical signal from the "line side" is received through the optical signal processor, and the received downlink optical signal is output to the optical signal parsing unit. At the same time, the received downlink optical signal is output to the OTU. Further, on the one hand, the optical signal parsing unit decodes the optical signal transmitted from the optical signal processor to obtain signal identification information. On the other hand, the OTU decodes the optical signal transmitted from the optical signal processor to obtain signal identification information. By comparing the signal identification information obtained by the optical signal parsing unit and the signal identification information obtained by the OTU, it can be determined which OTU the optical signal is received by, so that, when the first port through which the optical signal passes is known, it can be determined which OTU the first port through which the optical signal passes is connected.

[0077] The embodiment of the present application does not limit the number of optical signal processors and optical signal analysis units integrated in the optical signal processing device. The number of optical signal processors can be one or more. The number of optical signal analysis units can be one or more.

[0078] It should also be noted that since the OTU usually integrates both the signal transmitting end and the signal receiving end, the embodiments of the present application can realize the "fiber connection check" between the OTU and the optical signal processing device by completing the "fiber connection check" between the signal transmitting end or the signal receiving end and the optical signal processing device. The following first introduces the specific implementation method of the "fiber connection check" between the signal transmitting end and the optical signal processing device, and then introduces the specific implementation method of the "fiber connection check" between the signal receiving end and the optical signal processing device.

[0079] Figure 6A schematic diagram of an optical signal processing device is given. Figure 6 As shown, in some possible implementations, the optical signal processing device includes an optical signal processor and an optical signal parsing unit. The optical signal parsing unit includes an optoelectronic conversion subunit and a coding and decoding subunit. The optical signal processor can receive an uplink optical signal emitted by any one or more signal transmitting ends of the "client side", and output one or more uplink optical signals received by it to the optical signal parsing unit respectively. In this way, after the optical signal parsing unit decodes the signal identification information (for example, the identification information of the OTU, such as the network element IP address, slot number, optical port number, etc.) from each uplink optical signal, the signal transmitting end corresponding to each uplink optical signal can be determined. At the same time, when the first port through which each uplink optical signal passes is known, the signal transmitting end (the relevant information of the signal transmitting end) connected to the first port through which each uplink optical signal passes can be determined. When the optical signal processor outputs the uplink optical signal emitted by each signal transmitting end connected to it to the optical signal parsing unit in sequence to complete the decoding, the "fiber connection check" between the optical signal processor and each signal transmitting end can be completed.

[0080] Depend on Figure 6 It can be seen from the implementation method shown that the optical signal processing device provided in the embodiment of the present application can automatically and autonomously complete the "fiber connection check" between itself and the OTU in the system startup stage, ensuring that the optical signal emitted by the OTU and entering the optical communication system meets expectations, avoiding unpredictable effects on the subsequent operation of the optical system. In addition, the optical signal processing device can also automatically and autonomously complete the "fiber connection check" between itself and the OTU in the system operation stage, ensuring that the optical communication system meets business requirements for the transmission of the optical signal emitted by the OTU and the optical signal from the optical network. Moreover, since the optical signal analysis unit only includes an optoelectronic conversion subunit and a coding and decoding subunit, it can complete the "fiber connection check" in the system startup stage and the system operation stage. Therefore, the device structure is simple, hardware costs are saved, and it is not affected by the expansion of the number of ports of the optical signal processor, and it has strong evolvability.

[0081] In the embodiments of the present application, for ease of explanation, the side of the optical signal processor close to the "line side" is referred to as the first side, and the other side is referred to as the second side. In one possible implementation, the second side of the optical signal processor may include at least one uplink input port, which may be respectively connected to different signal sending ends of the "client side", so as to receive the uplink optical signal emitted by the signal sending end. The first side of the optical signal processor may include at least one uplink output port, which may be connected to the input port of the optical cross-connect device or the optical signal parsing unit, so as to output the optical signal emitted by the signal sending end of the "client side" to the optical cross-connect device or the optical signal parsing unit. Figure 6In the implementation shown, an optoelectronic conversion sub-unit included in the optical signal analysis unit can be connected to any one or more uplink output ports on the first side of the optical signal processor, so as to obtain the uplink optical signal output by the optical signal processor, perform signal processing operations on the obtained uplink optical signal, and complete the "fiber connection check" between the OTU.

[0082] For example, combined with Figure 6 and Figure 7 In a possible implementation, the optical signal analysis unit includes an optoelectronic conversion subunit, which is connected to the target output port on the first side of the optical signal processor, and the target output port is one of multiple uplink output ports. When the optical signal processing device is applied to an optical communication system, other uplink output ports on the first side of the optical signal processor can be connected to the input port of the "line side" optical cross-connection device, and different uplink input ports on the second side of the optical signal processor can be connected to different signal sending ends. In this implementation, the optical signal processing can receive an uplink optical signal sent by any one or more signal sending ends to which it is connected, and output the uplink optical signal from any signal sending end from the target output port on the first side to the optoelectronic conversion subunit to complete the optoelectronic conversion, and then the encoding and decoding subunit decodes the signal identification information from the electrical signal.

[0083] In the above Figure 7 In the implementation shown, multiple signal transmitting ends may transmit uplink optical signals at the same time point, or may transmit uplink optical signals sequentially at different time points. In the case where multiple signal transmitting ends transmit uplink optical signals at the same time, the optical signal processor may output the uplink optical signals transmitted by the multiple signal transmitting ends to the optical signal parsing unit sequentially at different time points. In this way, it is possible to avoid conflicts between uplink optical signals of the same wavelength in the optical signal parsing unit, which may cause the optical signal parsing unit to be unable to distinguish them. In the case where multiple signal transmitting ends transmit uplink optical signals sequentially at different time points, the optical signal processor may output any uplink optical signal to the optical signal parsing unit after receiving it.

[0084] It should be understood that, in the case where multiple signal transmitting ends simultaneously transmit uplink optical signals and the wavelengths of the transmitted uplink optical signals are different from each other, the optical signal processor can simultaneously output the multiple uplink optical signals to the optical signal parsing unit for processing. Since the wavelengths of the multiple uplink optical signals are different, it means that the correspondence between the wavelength and the input port on the second side of the optical signal processor is known, so the optical signal parsing unit can distinguish the uplink optical signals from different sources. In specific implementation, the optical signal processor can divide the uplink optical signal emitted by any signal transmitting end into two paths after receiving it, output one of the paths to the predetermined output port to the optical cross-connect device, and output the other path to the target output port to the optical signal parsing unit. In this implementation, if Figure 8 As shown, an optical splitter is provided on any optical path from the input port on the second side to the output port on the first side inside the optical signal processor, and each optical splitter may include two output ports, one of which is connected to a predetermined output port on the first side, and the other is connected to a target output port connected to a light signal analysis unit.

[0085] Combination Figure 6 and Fig. 9 In one possible implementation, the optical signal processing device also includes at least one optical amplifier, and each optical amplifier includes a photoelectric conversion device, such as a photodiode. The encoding and decoding subunit in the optical signal analysis unit is connected to the photoelectric conversion device of the target optical amplifier. The target optical amplifier is any one of the at least one optical amplifier. The photoelectric conversion device of the target optical amplifier is used to convert the received uplink optical signal into an electrical signal, and perform power detection to control the target optical amplifier to amplify the received uplink optical signal. In this implementation, the optical signal analysis unit uses the photoelectric conversion device of the target optical amplifier as the photoelectric conversion subunit, so as to simplify the device structure and save hardware costs. In particular, in the case where the optical signal processing device includes multiple optical amplifiers, the optical signal processor connects different optical amplifiers through different uplink output ports on its first side.

[0086] Fig. 9 In the implementation shown, since the photoelectric conversion sub-unit of the optical signal analysis unit is also responsible for the optical power detection and control work before the optical signal amplification processing, it can be understood that in this implementation, the photoelectric conversion device of the target optical amplifier is used as the photoelectric conversion sub-unit of the optical signal analysis unit to realize the functional multiplexing of the photoelectric conversion device of the target optical amplifier without the need to set up an additional photoelectric conversion sub-unit, so as to achieve the purpose of simplifying the equipment structure and saving hardware costs.

[0087] Combination Figure 6 and Fig.10In a possible implementation, the optical signal analysis unit includes N photoelectric conversion subunits, and the optical signal processing device includes N optical amplifiers, where N is an integer greater than 1. Each optical amplifier includes a photoelectric conversion device for receiving an uplink optical signal from an optical signal processor and converting the received uplink optical signal into an electrical signal. The optical signal processor is connected to each optical amplifier, and after receiving an uplink optical signal sent by any signal transmitting end, the uplink optical signal is output to a designated optical amplifier. The optical signal analysis unit uses the photoelectric conversion devices of N optical amplifiers as N photoelectric conversion subunits. After the photoelectric conversion devices of each optical amplifier receive the uplink optical signal, on the one hand, the photoelectric conversion is completed, and the converted electrical signal is transmitted to the encoding and decoding subunit, so that the signal identification information is decoded from the electrical signal corresponding to the uplink optical signal through the encoding and decoding subunit to realize "fiber connection verification", and on the other hand, the optical power of the uplink optical signal is detected to control the optical amplifier to amplify the optical power of the uplink optical signal. The amplified uplink optical signal can be output to the optical cross-connection device of the "line side".

[0088] exist Fig.10 In the implementation method, since each optoelectronic conversion sub-unit of the optical signal analysis unit also undertakes the optical power detection and control work before the optical signal amplification processing, it can be understood that in this implementation method, the optoelectronic conversion device of each optical amplifier is used as the optoelectronic conversion sub-unit of the optical signal analysis unit to realize the functional multiplexing of the optoelectronic conversion device of each optical amplifier, without the need to set up additional optoelectronic conversion sub-units, so as to achieve the purpose of simplifying the equipment structure and saving hardware costs.

[0089] Figure 6-Figure 10 The specific implementation method of the "fiber connection check" between the signal sending end and the optical signal processing device is given. It can be seen that the optical signal processing device provided in the embodiment of the present application can automatically and autonomously complete the "fiber connection check" between it and the OTU in the system startup phase, ensuring that the optical signal sent by the OTU and entering the optical communication system meets expectations, avoiding unpredictable effects on the subsequent operation of the optical system. In addition, the optical signal processing device can also automatically and autonomously complete the "fiber connection check" between it and the OTU in the system operation phase, ensuring that the optical communication system meets the business requirements for the transmission of the optical signal sent by the OTU and the optical signal from the optical network.

[0090] Fig.11 A schematic diagram of another optical signal processing device is given. Fig.11As shown, in some other possible implementations, the optical signal processor can receive one or more downstream optical signals input by the optical cross-connection device on the "line side". On the one hand, the optical signal processor can output these downstream optical signals to the optical signal parsing unit in sequence, so that the signal identification information can be decoded from each downstream optical signal through the optical signal parsing unit; on the other hand, the optical signal processor can output these downstream optical signals to the signal receiving end connected to the port respectively, so that the signal receiving end can decode the signal identification information from the downstream optical signal received by it. By comparing the signal identification information obtained by the optical signal parsing unit with the signal identification information obtained by each signal receiving end, the signal receiving end connected to each output port of the optical signal processor can be determined.

[0091] Depend on Fig.11 It can be seen from the implementation methods shown that the optical signal processing equipment provided in the embodiments of the present application can, at least in the system operation phase, automatically and independently complete the "fiber connection check" between itself and the OTU, ensuring that the optical communication system meets the business requirements for the transmission of the optical signal emitted by the OTU and the optical signal from the optical network.

[0092] In a possible implementation, the first side of the optical signal processor may include at least one downstream input port, which may be connected to the output port of the optical cross-connect device, so as to receive the downstream optical signal from the optical cross-connect device. The second side of the optical signal processor may include at least one downstream output port, which may be connected to different signal receiving ends or optical signal parsing units on the "client side" respectively, so as to output the downstream optical signal input by the optical cross-connect device to the corresponding signal receiving end or signal parsing unit. Fig.11 In the implementation shown, the optical signal analysis unit can be connected to any one or more downstream output ports on the second side of the optical signal processor, so as to obtain the downstream optical signal from the "line side", perform signal processing operations on the obtained downstream optical signal, and complete the "fiber connection check" between the OTU.

[0093] For example, combined with Fig.11 and Fig.12In a possible implementation, the optical signal parsing unit includes an optoelectronic conversion subunit, which is connected to the target output port on the second side of the optical signal processor. When the optical signal processing device is applied to an optical communication system, the downlink input port on the first side of the optical signal processor can be connected to the output port of the "line side" optical cross-connection device, and other different downlink output ports on the second side can be connected to different signal receiving ends. In this implementation, the optical signal processor can receive one or more downlink optical signals output by the optical cross-connection device, and on the one hand, output the received downlink optical signal to the corresponding signal receiving end through a predetermined output port, so that the signal receiving end can parse the signal identification information from the received downlink optical signal. On the other hand, the received downlink optical signal is output from the target output port to the optoelectronic conversion subunit to complete the optoelectronic conversion, and then the encoding and decoding subunit decodes the signal identification information from the electrical signal.

[0094] In the above implementation, the optical signal processor can output different downlink optical signals to the optical signal analysis unit at different time points in sequence, so as to avoid conflicts between downlink optical signals with the same wavelength in the optical signal analysis unit, which would make it impossible for the optical signal analysis unit to distinguish them.

[0095] It should be understood that, in the case where the wavelengths of the received downlink optical signals are different from each other, the optical signal processor can simultaneously output the multiple downlink optical signals to the optical signal parsing unit for processing. Since the wavelengths of the multiple downlink optical signals are different, it means that the relationship between the wavelength and the input port of the first side of the optical signal processor is known, so the optical signal parsing unit can distinguish the downlink optical signals from different sources. In specific implementation, the optical signal processor can divide any downlink optical signal into two paths after receiving it, output one of the paths to the predetermined output port to the corresponding signal receiving end, and output the other path to the target output port to the optical signal parsing unit. In this implementation, if Fig.13 As shown, an optical splitter is provided on any optical path from the input port on the first side to the output port on the second side inside the optical signal processor, and each optical splitter may include two output ports, one of which is connected to a predetermined output port, and the other is connected to a target output port connected to the optical signal analysis unit.

[0096] Combination Fig.11 and Fig.14In one possible implementation, the optical signal processing device also includes at least one optical amplifier, and each optical amplifier includes a photoelectric conversion device, such as a photodiode. The encoding and decoding subunit in the optical signal analysis unit is connected to the photoelectric conversion device of the target optical amplifier. The target optical amplifier is any one of the at least one optical amplifier. The photoelectric conversion device of the target optical amplifier is used to convert the received downstream optical signal into an electrical signal, and perform power detection to control the target optical amplifier to amplify the received downstream optical signal. In this implementation, the optical signal analysis unit uses the photoelectric conversion device of the target optical amplifier as the photoelectric conversion subunit, so as to simplify the device structure and save hardware costs. In particular, in the case where the optical signal processing device includes multiple optical amplifiers, the optical signal processor connects different optical amplifiers through different downstream output ports on its second side.

[0097] exist Fig.14 In the implementation shown, since the optoelectronic conversion subunit of the optical signal analysis unit also undertakes the optical power detection and control work before the optical signal amplification processing, it can be understood that in this implementation, the optoelectronic conversion device of the target optical amplifier is used as the optoelectronic conversion subunit of the optical signal analysis unit to realize the functional multiplexing of the optoelectronic conversion device of the target optical amplifier without the need to set up an additional optoelectronic conversion subunit, so as to achieve the purpose of simplifying the equipment structure and saving hardware costs.

[0098] Combination Fig.14 and Fig.15 In a possible implementation, the optical signal analysis unit includes N photoelectric conversion subunits, and the optical signal processing device includes N optical amplifiers, where N is an integer greater than 1. Each optical amplifier includes a photoelectric conversion device for receiving a downstream optical signal from an optical signal processor and converting the received downstream optical signal into an electrical signal. The optical signal processor is connected to each optical amplifier, and after receiving a downstream optical signal sent by any signal transmitting end, the downstream optical signal is output to a designated optical amplifier. The optical signal analysis unit uses the photoelectric conversion devices of N optical amplifiers as N photoelectric conversion subunits. After the photoelectric conversion devices of each optical amplifier receive the downstream optical signal, on the one hand, the photoelectric conversion is completed, and the converted electrical signal is transmitted to the encoding and decoding subunit, so that the signal identification information is decoded from the downstream optical signal by the encoding and decoding subunit to realize "fiber connection verification", and on the other hand, the optical power of the downstream optical signal is detected to control the optical amplifier to amplify the downstream optical signal according to the optical power of the downstream optical signal, and output it to the corresponding signal receiving end, so that the signal receiving end can decode the signal identification information from the amplified downstream optical signal.

[0099] exist Fig.15In the implementation method, since each optoelectronic conversion sub-unit of the optical signal analysis unit also undertakes the optical power detection and control work before the optical signal amplification processing, it can be understood that in this implementation method, the optoelectronic conversion device of each optical amplifier is used as the optoelectronic conversion sub-unit of the optical signal analysis unit to realize the functional multiplexing of the optoelectronic conversion device of each optical amplifier, without the need to set up additional optoelectronic conversion sub-units, so as to achieve the purpose of simplifying the equipment structure and saving hardware costs.

[0100] Figure 11-Figure 15 A specific implementation method of the "fiber connection check" between the signal sending end and the optical signal processing device is given. It can be seen that the optical signal processing device provided in the embodiment of the present application can, at least in the system operation stage, automatically and independently complete the "fiber connection check" between it and the OTU to ensure that the optical communication system meets the business requirements for the transmission of the optical signal emitted by the OTU and the optical signal from the optical network.

[0101] The above embodiments all take an optical signal processor in an optical signal processing device as an example to illustrate the specific implementation method of the optical signal processing device. In fact, the optical signal processing device provided in the embodiment of the present application may include multiple optical signal processors. Among them, one or more optical signals output by each optical signal processor can be combined through a combiner, and then output to the same optoelectronic conversion sub-unit, and then through as few optoelectronic conversion sub-units as possible, "fiber connection verification" of multiple optical signal processors can be achieved. Thereby, the device structure is simplified and hardware costs are saved. The following are respectively combined Fig.10 and Fig.15 The two types of implementations shown are used to introduce the implementations in which the optical signal processing device includes multiple optical signal processors.

[0102] Fig.16 A possible optical signal processing device is given, such as Fig.16 As shown, in Fig.10On the basis of the implementation shown, the optical signal processing device includes multiple optical signal processors and multiple optical combiners. Each optical signal processor is connected to different combiners through different output ports on its first side, so that multiple optical signal processors are connected to the same optical amplifier through one output port on its first side. At the same time, multiple combiners are connected to multiple optical amplifiers one by one. In this implementation, each optical signal processor, after receiving an uplink optical signal sent by any signal sending end, outputs the uplink optical signal from a predetermined output port on its first side to the combiner connected to the output port. After each combiner receives the uplink optical signal from one or more optical signal processors, it combines them into one and outputs them to the connected optical amplifier. The photoelectric conversion device in any optical amplifier, as the photoelectric conversion subunit of the optical signal analysis unit, after receiving the uplink optical signal, on the one hand, completes the photoelectric conversion and transmits the converted electrical signal to the codec subunit, so that the codec subunit can parse the signal identification information from the uplink optical signal to achieve "fiber connection verification", and on the other hand, detects the optical power of the uplink optical signal to control the optical amplifier to amplify it according to the optical power of the uplink optical signal. The amplified uplink optical signal can be output to the optical cross-connection device on the "line side".

[0103] exist Fig.16 In the implementation method, further multiplexing of the optoelectronic conversion devices of multiple optical amplifiers in the optical signal processing equipment is achieved. By setting up multiple combiners, the "fiber connection check" between the two optical signal processors and the OTU is achieved, which simplifies the equipment structure and saves hardware costs.

[0104] Fig.17 A possible optical signal processing device is given, such as Fig.17 As shown, in Fig.15On the basis of the implementation shown, the optical signal processing device includes multiple optical signal processors and multiple optical combiners. Each optical signal processor is connected to a different combiner through different output ports on its second side, so that multiple optical signal processors are connected to the same optical amplifier through one output port on its second side. At the same time, multiple combiners are connected to multiple optical amplifiers one by one. In this implementation, each optical signal processor, after receiving one or more downstream optical signals from the "line side", outputs each downstream optical signal from a predetermined output port on its second side to the combiner connected to the output port. After each combiner receives the downstream optical signals from one or more optical signal processors, it combines them into one and outputs them to the connected optical amplifier. The photoelectric conversion device of any optical amplifier, as the photoelectric conversion subunit of the optical signal analysis unit, after receiving the downlink optical signal, on the one hand, completes the photoelectric conversion and transmits the converted electrical signal to the codec subunit, so that the codec subunit can parse the signal identification information from the downlink optical signal to achieve "fiber connection verification", and on the other hand, detects the optical power of the downlink optical signal to control the optical amplifier to amplify the downlink optical signal according to the optical power of the downlink optical signal after receiving it. The amplified downlink optical signal is output to the signal receiving end of the "client side" so that the signal receiving end can parse the signal identification information therefrom.

[0105] exist Fig.17 In the implementation method, further multiplexing of the optoelectronic conversion devices of multiple optical amplifiers in the optical signal processing equipment is achieved. By setting up multiple combiners, the "fiber connection check" between the two optical signal processors and the OTU is achieved, which simplifies the equipment structure and saves hardware costs.

[0106] The optical signal parsing unit mentioned in the embodiment of the present application may include a photoelectric conversion device and a processor. Among them, the photoelectric conversion device may be a photodiode for converting an optical signal into an electrical signal. The processor may be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for implementing the signal processing operation in the scheme of the present application. In addition, the optical signal parsing unit may also include a memory. The memory may be a device with a storage function. For example, it may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions. The memory may be independent and connected to the processor via a communication line. The memory may also be integrated with the processor. The memory is used to store computer execution instructions for executing the scheme of the present application, and the execution is controlled by the processor.

[0107] The optical signal processing device provided in the embodiment of the present application can automatically and autonomously complete the "fiber connection check" between it and the OTU during the system startup phase, ensuring that the optical signal sent by the OTU and entering the optical communication system meets business expectations and avoids unpredictable effects on the subsequent operation of the optical system. In addition, the optical signal processing device can also automatically and autonomously complete the "fiber connection check" between it and the OTU during the system operation phase, ensuring that the optical communication system meets business requirements for the transmission of the optical signal sent by the OTU and the optical signal from the optical network.

[0108] Based on this, an embodiment of the present application further provides an optical communication system, which includes any one or more of the above optical signal processing devices. The above optical signal processing device can be applied to an optical add / drop multiplexing node in an optical communication system, for example, Figure 1 The branch unit shown in FIG.

[0109] It can be understood that the detailed description of the optical signal processing device above can be referred to in the corresponding embodiments of the optical communication system, and the embodiments of the present application will not be repeated here.

[0110] Fig.18 The present application also provides an optical signal processing method, which can be applied to the optical signal processing device provided above. Figure 6 or Fig.11As shown, the optical signal processing device includes an optical signal processor and an optical signal analysis unit connected to the optical signal processor; the optical signal processor includes multiple signal transmission ports, at least one first port of the multiple signal transmission ports is used to connect to an optical transceiver device unit; the optical signal analysis unit includes at least one photoelectric conversion subunit and a codec subunit connected to the photoelectric conversion subunit. The optical signal processing method may include the following steps.

[0111] S101, the optical signal processor outputs the input optical signal to the optical signal analysis unit; the optical signal is an optical signal input from the optical transceiver device unit via any first port or output to the optical transceiver device unit via any first port; the optical signal carries signal identification information.

[0112] The optical signal can be an uplink optical signal emitted by any signal transmitting end of the "client side". Multiple signal transmitting ends can emit uplink optical signals at the same time point, or can emit uplink optical signals sequentially at different time points. In the case where multiple signal transmitting ends emit uplink optical signals at the same time, the optical signal processor can output the uplink optical signals emitted by the multiple signal transmitting ends to the optical signal parsing unit sequentially at different time points. In this way, it is possible to avoid conflicts between uplink optical signals of the same wavelength in the optical signal parsing unit, which makes it impossible for the optical signal parsing unit to distinguish them. In the case where multiple signal transmitting ends emit uplink optical signals sequentially at different time points, the optical signal processor can output any uplink optical signal to the optical signal parsing unit after receiving it.

[0113] The optical signal may be a downstream optical signal input by an optical cross-connect device on the "line side". On the one hand, the optical signal processor may output these downstream optical signals to the optical signal parsing unit in sequence, so that the signal identification information can be decoded from each downstream optical signal through the optical signal parsing unit. Among them, the optical signal processor may output different downstream optical signals to the optical signal parsing unit in sequence at different time points. In this way, it is possible to avoid conflicts between downstream optical signals with the same wavelength in the optical signal parsing unit, which may cause the optical signal parsing unit to be unable to distinguish. In the case where the wavelengths of the received downstream optical signals are different from each other, the optical signal processor may output the multiple downstream optical signals to the optical signal parsing unit for processing at the same time. Since the wavelengths of the multiple downstream optical signals are different, it means that the relationship between the wavelength and the input port of the first side of the optical signal processor is known, so the optical signal parsing unit can distinguish the downstream optical signals from different sources. On the other hand, the optical signal processor may output these downstream optical signals to the signal receiving end connected to the port respectively, so as to decode the signal identification information from the downstream optical signal received by the signal receiving end. By comparing the signal identification information obtained by the optical signal analysis unit with the signal identification information obtained by each signal receiving end, the signal receiving end connected to each output port of the optical signal processor can be determined. Based on this, the optical signal processing method provided in the embodiment of the present application also includes: the optical signal processor outputs the input optical signal to any signal receiving end.

[0114] S102, the photoelectric conversion subunit converts the optical signal from the optical signal processor into an electrical signal.

[0115] Optionally, the photoelectric conversion subunit may specifically be a photodiode.

[0116] S103, the encoding and decoding subunit decodes the electrical signal to obtain the signal identification information; the signal identification information is used to determine the optical transceiver device unit connected to the first port through which the optical signal passes.

[0117] For example, the signal identification information may include identification information of the OTU, such as a network element IP address, a slot number, an optical port number, and the like.

[0118] In some embodiments, Fig.10 or Fig.15 As shown, the optical signal analysis unit includes N photoelectric conversion sub-units; the optical signal processing device includes N optical amplifiers; N is an integer greater than 1; each optical amplifier includes a photoelectric conversion device; the optical signal processor is connected to each optical amplifier; the photoelectric conversion devices of the N optical amplifiers are used to implement the N photoelectric conversion sub-units, and the photoelectric conversion devices of the N optical amplifiers correspond to the N photoelectric conversion sub-units one by one;

[0119] In the above S101, the optical signal processor outputs the input optical signal to the optical signal analysis unit, which specifically includes: the optical signal processor outputs the input optical signal to a photoelectric conversion device of any optical amplifier.

[0120] In some embodiments, Fig.15 As shown, the multiple signal transmission ports of the optical signal processor include multiple downstream output ports, and the optical signal processor is connected to different optical amplifiers through different downstream output ports; the N optical amplifiers are respectively connected to different optical transceiver device units. Based on this, the optical signal processing method provided in the embodiment of the present application also includes:

[0121] Each optical amplifier amplifies the input optical signal and outputs the processed optical signal to the connected optical transceiver device unit.

[0122] In some embodiments, Fig.16 or Fig.17 As shown, the optical signal processing device includes M optical signal processors and N combiners, where M is an integer greater than 1; the M optical signal processors are connected to the same optical amplifier via a combiner.

[0123] In the above S101, the optical signal processor outputs the input optical signal to the optoelectronic conversion device of any optical amplifier, specifically including: the optical signal processor outputs the input optical signal to the combiner; the combiner combines the optical signals from different optical signal processors into one, and then outputs it to the optoelectronic conversion device of the connected optical amplifier.

[0124] The optical signal processing method provided in the embodiment of the present application, when applied to an optical signal processing device, can enable the optical signal processing device to automatically and autonomously complete the "fiber connection check" between it and the OTU at the system startup stage, ensuring that the optical signal sent by the OTU and entering the optical communication system meets business expectations, avoiding unpredictable effects on the subsequent operation of the optical system. In addition, the optical signal processing device can also automatically and autonomously complete the "fiber connection check" between it and the OTU during the system operation stage, ensuring that the optical communication system meets business requirements for the transmission of the optical signal sent by the OTU and the optical signal from the optical network.

[0125] It can be understood that the detailed description of the optical signal processing device above can be referred to in the corresponding embodiments of the optical signal processing method, and the embodiments of the present application will not be repeated here.

[0126] An electronic device provided in an embodiment of the present application may be a chip or a system on chip in an optical communication system, or may be a module, a chip or a system on chip in an optical signal processing device. Fig.19 A schematic diagram of the composition of an electronic device provided in this application, such as Fig.19 As shown, the electronic device may include at least one processor 191 and at least one memory 192 ( Fig.19 The electronic device is only illustrative in that it includes a processor 191 and a memory 192 as an example for explanation). Optionally, the electronic device may further include a communication bus 193 for connecting the processor 191 and the memory 192. The memory 191 stores computer program codes, and the computer program codes include computer instructions. When the computer instructions are executed by the processor 192, the electronic device implements the functions of the optical signal parsing unit in the optical signal processing device mentioned in the context, or enables the electronic device to perform the actions performed by the optical signal parsing unit in the optical signal processing method mentioned in the context.

[0127] The processor 191 may be a general-purpose central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 191 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0128] The memory 192 may be a device with a storage function, and is used to store instructions and / or data, wherein the instructions may be computer programs.

[0129] Exemplarily, the memory 192 may be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.

[0130] It should be noted that the memory 192 may exist independently of the processor 191 or may be integrated with the processor 191. The memory 192 may be located inside the electronic device or outside the electronic device without limitation. The processor 191 may be used to execute instructions stored in the memory 192.

[0131] The communication bus 193 is used to connect different components in the electronic device so that the different components can communicate. The communication bus 193 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.19 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0132] As an optional implementation, the electronic device may further include an output device 194 and an input device 195. The output device 194 communicates with the processor 191 and may display information in a variety of ways. For example, the output device 194 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 195 communicates with the processor 191 and may receive user input in a variety of ways. For example, the input device 195 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0133] In some embodiments, in terms of hardware implementation, those skilled in the art may think of the above Figure 6-Figure 17 The codec subunit shown in can be used Fig.19 The electronic device is shown in the form of an electronic device.

[0134] As an example, Figure 6 The function / implementation process of the codec subunit in can be Fig.19 The processor 191 in the electronic device shown calls the computer execution instructions stored in the memory 192 to implement.

[0135] It should be noted that Fig.19 The structure shown does not constitute a specific limitation on the optical signal analysis unit and the electronic device. Fig.19More or fewer components, or combining some components, or splitting some components, or different arrangements of components. Fig.19 The components shown may be implemented in hardware, software, or a combination of software and hardware.

[0136] The present application also provides a computer-readable storage medium having a computer program or instruction stored thereon. When the computer program or instruction is executed by a computer, the electronic device implements the function of the optical signal parsing unit in the optical signal processing device, or enables the electronic device to perform the action performed by the optical signal parsing unit in the optical signal processing method.

[0137] The present application also provides a computer program product, which implements the functions of any of the above embodiments when executed by a computer.

[0138] It can be understood that the detailed description of the optical signal processing device above can be referred to in the corresponding embodiments of the above-mentioned electronic device, computer-readable storage medium and computer program product, and the embodiments of the present application will not be repeated here.

[0139] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0140] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An optical signal processing device, characterized in that: It includes an optical signal processor and an optical signal analysis unit connected to the optical signal processor; The optical signal processor comprises a plurality of signal transmission ports, at least one first port among the plurality of signal transmission ports is used to be connected to an optical transceiver device unit; the optical signal processor is used to output an input optical signal to the optical signal analysis unit; the optical signal is an optical signal input from the optical transceiver device unit via any of the first ports or output to the optical transceiver device unit via any of the first ports; The optical signal carries signal identification information; The optical signal analysis unit includes at least one photoelectric conversion subunit and a coding and decoding subunit connected to the photoelectric conversion subunit; the photoelectric conversion subunit is used to convert the optical signal from the optical signal processor into an electrical signal; The encoding and decoding subunit is used to decode the electrical signal to obtain the signal identification information; The signal identification information is used to determine the optical transceiver device unit connected to the first port through which the optical signal passes.

2. The optical signal processing device according to claim 1, characterized in that: The optical signal analysis unit includes an optoelectronic conversion subunit, and the multiple signal transmission ports include multiple output ports; the optical signal processor is connected to the optoelectronic conversion subunit via a target output port; and the target output port is one of the multiple output ports.

3. The optical signal processing device according to claim 2, characterized in that: The optical signal processing device further comprises at least one optical amplifier, each of which comprises a photoelectric conversion device; the optical signal processor is connected to each of the optical amplifiers; The photoelectric conversion subunit is a photoelectric conversion device included in any one of the at least one optical amplifier.

4. The optical signal processing device according to claim 1, characterized in that: The optical signal analysis unit includes N photoelectric conversion sub-units; the optical signal processing device includes N optical amplifiers; N is an integer greater than 1; each of the optical amplifiers includes a photoelectric conversion device; The optical signal processor is connected to each of the optical amplifiers and is used to output the input optical signal to any optical amplifier; The photoelectric conversion devices of the N optical amplifiers are used to implement the N photoelectric conversion sub-units, and the photoelectric conversion devices of the N optical amplifiers correspond one-to-one to the N photoelectric conversion sub-units.

5. The optical signal processing device according to any one of claims 2 to 4, characterized in that: The multiple signal transmission ports include multiple uplink output ports, and the first port includes an uplink input port; when the optical signal is input from the optical transceiver device unit via the uplink input port, the target output port is any one of the multiple uplink output ports.

6. The optical signal processing device according to claim 4, characterized in that: The plurality of signal transmission ports include a plurality of uplink output ports, and the optical signal processor is connected to different optical amplifiers via different uplink output ports.

7. The optical signal processing device according to any one of claims 1 to 6, characterized in that: The signal identification information carried by the optical signal includes identification information of the optical transceiver device unit that inputs the optical signal.

8. The optical signal processing device according to any one of claims 2 to 4, characterized in that: The multiple signal transmission ports include multiple downstream input ports, and the first port includes a downstream output port; when the optical signal is output from the downstream output port to the optical transceiver device unit, the target output port is any one of the multiple downstream output ports.

9. The optical signal processing device according to claim 4, characterized in that: The multiple signal transmission ports include multiple downstream output ports, and the optical signal processor is connected to different optical amplifiers through different downstream output ports; The N optical amplifiers are respectively connected to different optical transceiver device units, and each optical amplifier is used to amplify the input optical signal and output the processed optical signal to the connected optical transceiver device unit.

10. The optical signal processing device according to claim 4, characterized in that: The optical signal processing device includes M optical signal processors and N combiners, where M is an integer greater than 1; the M optical signal processors are connected to the same optical amplifier through one combiner; The combiner is used to combine the optical signals from different optical signal processors into one and output the combined optical signals to the connected optical amplifier.

11. The optical signal processing device according to claim 10, characterized in that: The plurality of signal transmission ports include a plurality of uplink output ports, the optical signal processor is connected to different combiners via different uplink output ports, and one uplink output port is connected to one combiner.

12. The optical signal processing device according to claim 10, characterized in that: The multiple signal transmission ports include multiple downstream output ports. The optical signal processor is connected to different combiners via different downstream output ports, and one downstream output port is connected to one combiner.

13. The optical signal processing device according to any one of claims 1 to 12, characterized in that: The optical signal processor includes a wavelength combiner / demultiplexer.

14. An optical communication system, characterized in that: The optical signal processing device comprises the optical signal processing device as claimed in any one of claims 1 to 13.

15. A method for processing an optical signal, characterized in that: Applied to an optical signal processing device, the optical signal processing device comprises an optical signal processor and an optical signal analysis unit connected to the optical signal processor; the optical signal processor comprises a plurality of signal transmission ports, at least one first port of the plurality of signal transmission ports is used to be connected to an optical transceiver device unit; the optical signal analysis unit comprises at least one photoelectric conversion subunit and a codec subunit connected to the photoelectric conversion subunit; The optical signal processing method comprises: The optical signal processor outputs the input optical signal to the optical signal analysis unit; the optical signal is an optical signal input from the optical transceiver device unit via any of the first ports or output to the optical transceiver device unit via any of the first ports; the optical signal carries signal identification information; The photoelectric conversion subunit converts the optical signal from the optical signal processor into an electrical signal; The encoding and decoding subunit decodes the electrical signal to obtain the signal identification information; the signal identification information is used to determine the optical transceiver device unit connected to the first port through which the optical signal passes.

16. The optical signal processing method according to claim 15, characterized in that: The optical signal analysis unit includes N photoelectric conversion subunits; the optical signal processing device includes N optical amplifiers; N is an integer greater than 1; each of the optical amplifiers includes a photoelectric conversion device; the optical signal processor is connected to each of the optical amplifiers; the photoelectric conversion devices of the N optical amplifiers are used to implement the N photoelectric conversion subunits, and the photoelectric conversion devices of the N optical amplifiers correspond to the N photoelectric conversion subunits one by one; The optical signal processor outputs the input optical signal to the optical signal analysis unit, including: The optical signal processor outputs the input optical signal to the photoelectric conversion device of any optical amplifier.

17. The optical signal processing method according to claim 16, characterized in that: The multiple signal transmission ports include multiple downstream output ports, the optical signal processor is connected to different optical amplifiers through different downstream output ports; the N optical amplifiers are respectively connected to different optical transceiver device units; The method further comprises: Each of the optical amplifiers amplifies the input optical signal and outputs the processed optical signal to the connected optical transceiver device unit.

18. The optical signal processing method according to claim 16 or 17, characterized in that: The optical signal processing device includes M optical signal processors and N combiners, where M is an integer greater than 1; the M optical signal processors are connected to the same optical amplifier through one combiner; The optical signal processor outputs the input optical signal to the photoelectric conversion device of any optical amplifier, including: The optical signal processor outputs the input optical signal to the combiner; The combiner combines the optical signals from different optical signal processors into one and outputs the combined optical signals to the photoelectric conversion device of the connected optical amplifier.

19. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein the memory is coupled to the processor; the memory stores computer program code, and the computer program code comprises computer instructions. When the computer instructions are executed by the processor, the electronic device implements the function of the optical signal parsing unit in the optical signal processing device as described in any one of claims 1 to 13, or enables the electronic device to perform the action performed by the optical signal parsing unit in the optical signal processing method as described in any one of claims 15 to 18.

20. A computer-readable storage medium, characterized in that: The method comprises computer program instructions, which, when executed by a processor of an electronic device, enable the electronic device to implement the functions of the optical signal parsing unit in the optical signal processing device as described in any one of claims 1 to 13, or enable the electronic device to perform the actions performed by the optical signal parsing unit in the optical signal processing method as described in any one of claims 15 to 18.

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