Signal light processing method, electronic device, and optical transmission system

Abstract

Embodiments of the present disclosure provide a signal light processing method, an electronic device, and an optical transmission system. The method is applied to an optical transmission system, and an optical switch is deployed on a transmission link of the optical transmission system. The method comprises: on a transmission link, determining an initial sub-transmission link which is triggered by an optical switch and is in an on state; determining a link switching condition corresponding to the initial sub-transmission link, wherein the link switching condition is used for indicating a condition under which the optical switch triggers a switching operation on the initial sub-transmission link; detecting whether signal light of an optical cable satisfies the link switching condition, and if the signal light of the optical cable satisfies the link switching condition, controlling the optical switch to trigger the switching operation on the initial sub-transmission link to obtain a target sub-transmission link in an on state; and outputting signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link satisfies signal light required by an optical transmission system.

Description

[0001] This disclosure cross-references the claims of Chinese Patent Application No. 202410702929.2, filed on May 31, 2024, entitled "Signal Light Processing Method, Electronic Device, and Optical Transmission System," the entire contents of which are incorporated herein by reference. Technical Field This disclosure relates to the field of cloud computing, and more specifically, to a signal light processing method, electronic device, and optical transmission system. Background Art Currently, with the development of cloud computing, Dense Wavelength Division Multiplexing (DWDM) optical transmission systems are a technology that can improve communication capacity (transmission capacity) by transmitting multiple optical signals of different wavelengths in optical fibers. In DWDM systems, the C-band (wavelength between 1530 and 1565 nanometers) is one of the commonly used transmission bands for signal light. The C-band is widely used in data center networks because it can provide high-capacity communication and meet the needs of high-speed data transmission. To further enhance communication capacity, L-band (wavelengths between 1565 and 1625 nanometers) signal light in optical fiber can be used to form a C+L DWDM system (multi-band system), increasing communication capacity without increasing optical cable resources. However, in the aforementioned multi-band system, the increased Stimulated Raman Scattering (SRS) effect can amplify the fault domain. Therefore, addressing the fault domain amplification caused by the SRS effect is crucial. In related technologies, to solve this problem, Amplified Spontaneous Emission (ASE) in the amplifier is typically used to maintain the stability of the overall SRS effect. This method usually involves connecting to a wavelength selective switch (WSS) tributary port different from the signal light. When the signal light is interrupted, the original transmission channel (original medium channel) can be deleted on the WSS, and a new medium channel can be created at the ASE port. However, the entire process of deleting the original media channel and creating a new one is not very timely, generally taking several seconds to minutes. During this time, the fault domain may continue to expand. Therefore, the technical problem of poor optical signal processing remains. Currently, no effective solution has been proposed to address this issue.Summary of the Invention This disclosure provides a signal light processing method, electronic device, and optical transmission system to at least solve the technical problem of poor processing effect of optical signals. According to one aspect of the present disclosure, a signal light processing method is provided. This method is applied to an optical transmission system, where an optical switch is deployed on the transmission link. The method may include: determining an initial sub-transmission link that is in a conducting state triggered by the optical switch on the transmission link; determining a link switching condition corresponding to the initial sub-transmission link, wherein the link switching condition represents the condition under which the optical switch triggers a switching operation on the initial sub-transmission link; detecting whether the signal light of the optical cable meets the link switching condition; if the signal light of the optical cable meets the link switching condition, controlling the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state; and outputting the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system. According to another aspect of the present disclosure, another signal light processing method is provided. This method is applied to an optical transmission system deployed in a data center network on which a cloud platform is built, and optical switches are deployed on the transmission links of the optical transmission system. The method may include: determining an initial sub-transmission link that is in a conducting state triggered by an optical switch on the transmission link; determining the link switching conditions corresponding to the initial sub-transmission link, wherein the link switching conditions represent the conditions under which the optical switch triggers a switching operation on the initial sub-transmission link; detecting whether the signal light of the optical cable meets the link switching conditions; if the signal light of the optical cable meets the link switching conditions, controlling the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state; outputting the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system; and communicating with the cloud platform using the signal light. According to another aspect of the embodiments of this disclosure, an optical transmission system is also provided. The system may include: an input terminal for inputting signal light from an optical cable; an optical switch deployed on a transmission link for triggering a switching operation on an initial sub-transmission link in a conducting state in response to the signal light from the optical cable satisfying a link switching condition, thereby obtaining a target sub-transmission link in a conducting state, wherein the link switching condition represents the condition under which the optical switch triggers the switching operation on the initial sub-transmission link; and an output terminal for outputting signal light from the target sub-transmission link, wherein the signal light from the target sub-transmission link satisfies the signal light requirements of the optical transmission system. According to another aspect of this disclosure, an electronic device is also provided.The electronic device may include a memory and a processor: the memory stores computer-executable instructions, and the processor executes the computer-executable instructions, which, when executed by the processor, implement the signal light processing method of the present disclosure embodiments. According to another aspect of the present disclosure embodiments, a processor is also provided. The processor is used to run a program, wherein the signal light processing method of the present disclosure embodiments is executed during program execution. According to another aspect of the present disclosure embodiments, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, during program execution, the device where the storage medium is located controls the execution of the signal light processing method of the present disclosure embodiments. According to another aspect of the present disclosure embodiments, a computer program product is also provided. The computer program product includes a computer program, which, when executed by a processor, implements the signal light processing method of the present disclosure embodiments. According to another aspect of the present disclosure, a computer program product is also provided, including a computer program, which, when executed by a processor, implements the signal light processing method of any of the above embodiments. According to another aspect of this disclosure, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the signal light processing method described in any of the above-mentioned methods. According to another aspect of this disclosure, a computer program is also provided that, when executed by a processor, implements the signal light processing method described in any of the above-mentioned methods. In embodiments of this disclosure, if signal light processing is required, an optical switch can be deployed on the transmission link of the optical transmission system processing the signal light. An initial sub-transmission link that is in a conducting state triggered by the optical switch can be determined from the transmission link. The conditions for the optical switch to trigger a switching operation on the initial sub-transmission link can be determined, obtaining the corresponding link switching conditions, and it can be detected whether the signal light currently on the optical cable meets the link switching conditions. If the signal light on the optical cable meets the link switching conditions, the optical switch can be controlled to trigger a switching operation on the initial sub-transmission link, thereby obtaining a target sub-transmission link in a conducting state. The signal light on the target sub-transmission link that meets the requirements of the optical transmission system can then be output. In this embodiment, an optical switch can be added to the transmission link of the optical transmission system. This optical switch enables rapid switching between the initial sub-transmission link where the signal light resides and the branch where the ASE light source is located. This achieves the purpose of reducing the fault domain and rapidly recovering from faults, and also reduces the fault domain range, thereby improving the technical effect of optical signal processing and solving the technical problem of poor optical signal processing performance.It is readily apparent that the foregoing general description and the following detailed description are merely illustrative and explanatory purposes and do not constitute a limitation thereof. The accompanying drawings, which are included to provide a further understanding of the present disclosure and form part of this disclosure, illustrate exemplary embodiments of the present disclosure and, together with their descriptions, serve to explain the present disclosure and do not constitute an undue limitation thereof.In the accompanying drawings: Figure 1 is a hardware structure block diagram of a computer terminal (or mobile device) for implementing a signal light processing method according to an embodiment of the present disclosure; Figure 2 is a structural block diagram of a computing environment for a signal light processing method according to an embodiment of the present disclosure; Figure 3 is a flowchart of a signal light processing method according to an embodiment of the present disclosure; Figure 4 is a flowchart of another signal light processing method according to an embodiment of the present disclosure; Figure 5 is a flowchart of an optical transmission system according to an embodiment of the present disclosure; Figure 6 is a schematic diagram of an optical transmission system obtained by ASE filling in a related art; Figure 7 is a schematic diagram of an optical transmission system with deployed optical switches according to an embodiment of the present disclosure; Figure 8 is a flowchart of an automatic switching method for main and backup optical paths according to an embodiment of the present disclosure; Figure 9 is a schematic diagram of another optical transmission system with deployed optical switches according to an embodiment of the present disclosure; Figure 10 is a schematic diagram of another optical transmission system with deployed optical switches according to an embodiment of the present disclosure; Figure 11 is a schematic diagram of another optical transmission system with deployed optical switches according to an embodiment of the present disclosure; Figure 12 is a schematic diagram of another optical transmission system with deployed optical switches according to an embodiment of the present disclosure; Figure 13 is a schematic diagram of a partial optical transmission system with deployed comb filters according to an embodiment of the present disclosure. Figure 14 is a schematic diagram of a partial optical transmission system for deploying an optical amplifier according to an embodiment of the present disclosure; Figure 15 is a schematic diagram of expanding an ASE into an ASE group according to an embodiment of the present disclosure; Figure 16 is a flowchart of an ASE group shared protection switching method according to an embodiment of the present disclosure; Figure 17 is a schematic diagram of another ASE group for expanding an ASE according to an embodiment of the present disclosure; Figure 18(a) is a schematic diagram of an optical transmission system based on an optical switch deployed in an ASE group according to an embodiment of the present disclosure; Figure 18(b) is a schematic diagram of another optical transmission system based on an optical switch deployed in an ASE group according to an embodiment of the present disclosure; Figure 18(c) is a schematic diagram of another optical transmission system based on an optical switch deployed in an ASE group according to an embodiment of the present disclosure; Figure 18(d) is a schematic diagram of another optical transmission system based on an optical switch deployed in an ASE group according to an embodiment of the present disclosure; Figure 19 is a schematic diagram of a signal light processing device according to an embodiment of the present disclosure; Figure 20 is a schematic diagram of another signal light processing device according to an embodiment of the present disclosure; Figure 21 is a structural block diagram of a computer terminal according to an embodiment of the present disclosure; Figure 22 is a block diagram of an electronic device according to an embodiment of the present disclosure of a signal light processing method.Detailed Description of Embodiments To enable those skilled in the art to better understand the present disclosure, the technical solutions of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present disclosure. It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present disclosure described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or components is not necessarily limited to those steps or components that are explicitly listed, but may include other steps or components that are not explicitly listed or that are inherent to such process, method, product, or device.First, some terms or nouns appearing in the description of the embodiments of this disclosure are to be interpreted as follows: Dense wavelength division multiplexing (DWDM) is an optical network transmission technology that enables the simultaneous transmission of optical signals of multiple wavelengths into an optical fiber to achieve higher transmission capacity; a booster amplifier (BA) is an amplifier used to enhance the strength of an optical signal, typically located at the beginning of the optical signal transmission link, used to compensate for optical signal attenuation during transmission; a line amplifier (LA) is a device used to amplify an optical signal, typically used in the middle of an optical network transmission link to extend the transmission distance of the optical signal; a preamplifier (PA) is a device used to pre-amplify a signal in an optical signal transmission link, typically used at the optical signal receiver to enhance the strength and quality of the received signal; a dynamic gain equalizer (DGE) is a device used to dynamically adjust the gain of an optical signal in an optical signal transmission link. A gain equalizer (EA) is used to balance the intensity of optical signals of different wavelengths, ensuring that optical signals of different wavelengths have similar intensity during transmission. An optical amplifier (OA) is used to amplify optical signals, primarily for signal enhancement and extending transmission distance. An optical multiplexer (OMS) is the optical signal processing section used for wavelength division multiplexing and demultiplexing, enabling simultaneous transmission and separation of multiple wavelengths of optical signals. A reconfigurable optical add-drop multiplexer (ROADM) is a device that allows for flexible scheduling and management of optical signals in an optical network. A wavelength selection switch is a device that can select and split optical signals of specific wavelengths. Spontaneous emission noise is random noise generated in optical amplifiers. It may affect the performance of optical signal transmission, that is, it can be stray light noise generated in optical amplifiers due to stimulated emission; Stimulated Raman scattering (SRS) is a nonlinear effect that may occur during optical signal transmission, which will affect the performance of optical signal transmission.According to embodiments of this disclosure, a method for processing signal light is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be executed in a different order than that shown here. The method embodiment provided in Embodiment 1 of this disclosure can be executed in a mobile terminal, computer terminal, or similar computing device. Figure 1 is a hardware structure block diagram of a computer terminal (or mobile device) for implementing a signal light processing method according to an embodiment of this disclosure. As shown in Figure 1, the computer terminal 10 (or mobile device) may include one or more processors 102 (shown as 102a, 102b, ..., 102n in the figure) (processor 102 may include, but is not limited to, a microprocessor (MCU) or a programmable gate array (FPGA), etc.), a memory 104 for storing data, and a transmission device 106 for communication functions. In addition, it may include: a display, an input / output interface (I / O interface), a Universal Serial Bus (USB) port (which may be included as one of the ports of the Bus), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that the structure shown in FIG1 is merely illustrative and does not limit the structure of the aforementioned electronic device. For example, the computer terminal 10 may include more or fewer components than shown in FIG1, or have a different configuration than shown in FIG1. ​​The hardware structure block diagram shown in FIG1 can serve not only as an exemplary block diagram of the aforementioned computer terminal 10 (or mobile device), but also as an exemplary block diagram of the aforementioned server. In one alternative embodiment, FIG2 illustrates, in block diagram, an embodiment using the computer terminal 10 (or mobile device) shown in FIG1 as a computing node in computing environment 201. Figure 2 is a structural block diagram of a computing environment for a signal light processing method according to an embodiment of the present disclosure. As shown in Figure 2, the computing environment 201 includes multiple computing nodes (such as servers) running on a distributed network (shown as 210-1, 210-2 in the figure). Each computing node contains local processing and memory resources, and the end user 202 can remotely run applications or store data in the computing environment 201.Applications can be provided as multiple services 220-1, 220-2, 220-3, and 220-4 within computing environment 201, representing services "A", "D", "E", and "H", respectively. End user 202 can provide and access services via a web browser or other software application on a client. In some embodiments, the provisioning and / or requests of end user 202 can be provided to ingress gateway 230. Ingress gateway 230 may include a corresponding agent to handle the provisioning and / or requests for services (one or more services provided in computing environment 201). Services are provided or deployed according to various virtualization technologies supported by computing environment 201. In some embodiments, services can be provided based on virtual machine (VM)-based virtualization, container-based virtualization, and / or similar methods. Virtual machine-based virtualization can simulate a real computer by initializing a virtual machine, executing programs and applications without directly accessing any actual hardware resources. While virtualizing a machine using virtual machines, container-based virtualization allows containers to be launched to virtualize an entire operating system, enabling multiple workloads to run on a single operating system instance. In one embodiment of container-based virtualization, several containers of a service can be assembled into a Pod (e.g., a Kubernetes Pod). See the diagram for example. Multiple Pods 240-1, 240-2, and 240-N (collectively referred to as Pods). A Pod can include an agent 245 and one or more containers 242-1.

[0002] 242-2 and 242-M (collectively referred to as containers). One or more containers in a Pod handle requests related to one or more corresponding functions of a service. Agent 245 typically controls service-related network functions such as routing and load balancing. Other services can also be equipped with Pods similar to Pods. During operation, executing a user request from end user 202 may require calling one or more services in computing environment 201, and executing one or more functions of one service may require calling one or more functions of another service. As shown in Figure 2, service "A" 220-1 receives a user request from end user 202 from ingress gateway 230. Service "A" 220-1 can call service "D" 220-2, and service "D" 220-2 can request service "E" 220-3 to execute one or more functions. The aforementioned computing environment can be a cloud computing environment, where resource allocation is managed by the cloud service provider, allowing function development without considering implementation, adjustment, or scaling of servers. This computing environment allows developers to execute code responding to events without building or maintaining complex infrastructure. Services can be segmented into a set of functions that can automatically and independently scale, rather than scaling a single hardware device to handle potential loads. In the above operating environment, this disclosure provides a signal light processing method as shown in Figure 3. This method can be applied to an optical transmission system, where optical switches are deployed on the transmission link. It should be noted that the signal light processing method of this embodiment can be executed by the mobile terminal of the embodiment shown in Figure 1. Figure 3 is a flowchart of a signal light processing method according to an embodiment of this disclosure. As shown in Figure 3, the method may include the following steps: Step S302, on the transmission link, determining the initial sub-transmission link that is in a conducting state triggered by the optical switch. In the technical solution provided by step S302 of this disclosure, the optical transmission system can be an optical fiber communication system, which can be simply referred to as the system in this embodiment. The optical switch can be connected to an ASE (Optical Sequence Array) and can be used to switch between ASE spoofing and signal light. The optical switch may include a main port and a backup port, which can be called the main and backup ports. Optionally, the optical switch can also be called an optical switch matrix. An ASE spurious waveform can simulate the actual wavelength of an optical signal by utilizing the spontaneous emission noise in an optical amplifier. The ASE spurious waveform corresponds to the ASE beam. The transmission link can include an initial sub-transmission link. The initial sub-transmission link can also be called the primary / backup path, and can include a primary path, a backup path, and a common path. The primary path can also be called the Switch primary path or the primary path. The backup path can also be called the backup path.The primary path and backup path can be collectively referred to as the primary and backup paths. The conduction state can be used to indicate the path where the optical switch operates in the transmission link, that is, the path capable of signal optical transmission. The primary port can be connected to the primary path, and the backup port can be connected to the backup path. Components such as PA, BA, WSS, PA, ASE, Switch, and LA can be connected in the transmission link; these are merely examples and not specific limitations. In this embodiment, the initial sub-transmission link in which the optical switch operates and is in the conduction state can be determined from the transmission link. Optionally, the optical switch will preferentially operate on the primary path in the transmission link. If the primary path fails, the optical switch will operate on the backup path. In this embodiment, the original media channel of the WSS remains unchanged; that is, when the transmission link fails, there is no need to delete or create a media channel, thereby simplifying the ASE filling process. Optical switches can be used to switch between ASE spurious waveforms and signal light. That is, when a transmission link fails, the optical transmission system can quickly switch to connect the ASE spurious waveform and signal light, thereby quickly filling the ASE and restoring normal information transmission, thus improving ASE filling efficiency. Step S304: Determine the link switching conditions corresponding to the initial sub-transmission link. In the technical solution provided in step S304 of this disclosure, the link switching conditions can be used to represent the conditions under which the optical switch triggers a switching operation on the initial sub-transmission link, and can include the switching conditions for the primary path and the switching conditions for the backup path. The switching condition for the primary path can be the condition for switching the backup path to the primary path, which can be used to switch the optical switch to the primary path when the backup path fails. The switching condition for the backup path can be the condition for switching the primary path to the backup path, which can be used to switch the optical switch to the backup path when the primary path fails. In this embodiment, after identifying the initial sub-transmission link that is in a conducting state triggered by the optical switch on the transmission link, the link switching conditions corresponding to the initial sub-transmission link can be determined. Optionally, after identifying the initial sub-transmission link where the optical switch is currently operating on the transmission link, the link switching conditions corresponding to the initial sub-transmission link can be determined, and it can be monitored whether the optical signal of the optical cable in the transmission link meets the above-mentioned link switching conditions. Optionally, after identifying the initial sub-transmission link where the optical switch is currently operating, if the optical switch is currently operating on the main path, the backup path switching conditions corresponding to the main path can be determined. If the optical switch is currently operating on the backup path, the main path switching conditions corresponding to the backup path can be determined.Optionally, after determining the initial sub-transmission link corresponding to the current optical switch, it is possible to monitor whether the signal light on the optical cable of the current transmission link meets the link switching conditions. Optionally, if it is detected that the signal light on the optical cable of the current transmission link does not meet the link switching conditions, then it continues to operate on the initial sub-transmission link where the current optical switch is operating. Step S306: Detect whether the signal light on the optical cable meets the link switching conditions. If the signal light on the optical cable meets the link switching conditions, control the optical switch to trigger a switching operation on the initial sub-transmission link, thereby obtaining the target sub-transmission link in a conducting state. In the technical solution provided by step S306 of this disclosure, the target sub-transmission link can be used to represent the main path or backup path of the optical switch operating according to the link switching conditions met by the signal light on the optical cable. In this embodiment, after determining the link switching conditions corresponding to the initial sub-transmission link, the signal light of the optical cable can be detected to ensure that the link switching conditions are met. If the signal light meets the link switching conditions, the optical switch can be controlled to trigger a switching operation on the initial sub-transmission link, switching from the initial sub-transmission link to the target sub-transmission link, thereby making the target sub-transmission link active, and the optical switch can operate on the target sub-transmission link. Optionally, the upstream optical cable in the transmission link can be detected to determine whether the optical cable has experienced an interruption fault. If so, it can be determined that the optical signal meets the link switching conditions. At this time, the optical switch receives the above-mentioned optical cable interruption situation and triggers the switching process, switching the initial sub-transmission link to the target sub-transmission link. If the optical cable has not experienced an interruption fault, it can be determined that the optical signal does not meet the link switching conditions. At this time, the signal light of the optical cable can still be transmitted through the initial sub-transmission link. Since deleting the original media channel on the WSS and creating a new media channel on the ASE port to handle the fault when the signal light is interrupted will waste several seconds or even minutes. Therefore, the technical problem of low fault recovery efficiency still exists. However, in the embodiments of this disclosure, when an upstream optical cable experiences an interruption fault, the main path currently occupied by the optical switch will trigger a switchover to the backup path. The ASE light can replace the signal light within milliseconds, and the signal light is then transmitted downstream. When the upstream optical cable interruption fault is recovered, a switchover from the backup path to the main path can be triggered, and the ASE light can be switched back to the signal light within milliseconds, restoring the output signal light to the state before the interruption. Thus, the above method can achieve the effect of rapid switching of optical signals within milliseconds, achieving the technical effect of improving fault recovery efficiency. Step S308: Output the signal light on the target sub-transmission link.In the technical solution provided by step S308 of this disclosure, the signal light on the target sub-transmission link can be the signal light required by the optical transmission system. The signal light can include a spectral signal, which can be used to reflect the spectral characteristics of the signal light, that is, the energy distribution at different frequencies or wavelengths. The signal light can also be called an optical signal. In this embodiment, when the signal light of the optical cable is detected to meet the link switching conditions, the optical switch is controlled to trigger the switching operation of the initial sub-transmission link. After obtaining the target sub-transmission link, the signal light required by the optical transmission system can be output from the target sub-transmission link, thereby ensuring the normal signal transmission status of the optical transmission system. Optionally, through the above process of switching the initial sub-transmission link to the target sub-transmission link, not only can the fault recovery of the optical transmission system be realized quickly, but the spectral signal of the output signal light can also be restored to the state before the interruption fault, that is, the signal light output from the target sub-transmission link meets the spectral signal required by the optical transmission system. In this embodiment, a switch is used to switch between ASE light and signal light. That is, when a fault occurs in the optical transmission system, a rapid switch can be used to connect the ASE light and signal light, thereby quickly filling the ASE and restoring normal signal transmission. This ASE filling method enables millisecond-level rapid switching and fault recovery, meaning that faults can be responded to and repaired quickly within milliseconds, thus reducing the scope of the fault's impact and its effect on the entire optical transmission system, thereby improving the technical effect of optical signal processing. Through steps S302 to S308 of this disclosure, if signal light needs to be processed, an optical switch can be deployed on the transmission link of the optical transmission system processing the signal light. The initial sub-transmission link that is in a conducting state triggered by the optical switch can be determined from the transmission link. The conditions for the optical switch to trigger the switching operation on the initial sub-transmission link can be determined, obtaining the corresponding link switching conditions, and it can be detected whether the signal light currently on the optical cable meets the link switching conditions. If the signal light from the optical cable meets the link switching conditions, an optical switch can be controlled to trigger a switching operation on the initial sub-transmission link, thereby obtaining the target sub-transmission link in a conducting state. The signal light from the target sub-transmission link, which meets the requirements of the optical transmission system, can then be output. In this embodiment, an optical switch can be added to the transmission link of the optical transmission system, enabling rapid switching between the initial sub-transmission link where the signal light is located and the branch where the ASE light source is located.This achieves the goals of reducing the fault domain and rapidly recovering from faults, and also narrows the fault domain range, thereby improving the technical effect of optical signal processing and solving the technical problem of poor optical signal processing performance. The method described in this embodiment will be further described below. As an optional implementation, step S306, detecting whether the signal light of the optical cable meets the link switching conditions, includes: monitoring the state of the signal light of the optical cable; determining whether the signal light of the optical cable meets the link switching conditions based on the state of the signal light of the optical cable... In this embodiment, the state of the signal light of the optical cable can be monitored, and the state of the signal light can be used to determine whether the signal light meets the link switching conditions. Optionally, the state of the optical signal of the optical cable in the optical transmission system can be monitored. By monitoring the state of the signal light, it can be determined whether the initial sub-transmission link of the signal light transmission has failed. If it is determined from the state of the signal light that the initial sub-transmission link has failed, it can be determined that the link switching conditions are met, and the initial sub-transmission link can be switched to the target sub-transmission link. If it is determined from the state of the signal light that the initial sub-transmission link has not failed, it can be determined that the currently monitored signal light does not meet the link switching conditions, and no link switching is required; the signal light transmission continues on the initial sub-transmission link. As an optional implementation, determining whether the signal light of the optical cable meets the link switching conditions based on the state of the signal light of the optical cable includes: In response to the initial sub-transmission link being the main path corresponding to the optical switch, and the signal light state of the optical cable being abnormal, it is determined that the signal light of the optical cable meets the link switching conditions. Here, the main path is the sub-transmission link on the transmission link where the port used to monitor the signal light of the optical cable is located. In response to the initial sub-transmission link being the backup path corresponding to the optical switch, and the signal light state of the optical cable being normal, it is determined that the signal light of the optical cable meets the link switching conditions. Here, the backup path is the sub-transmission link on the transmission link where the port used to monitor the signal light of the light source is located. In this embodiment, during the process of determining whether the signal light of the optical cable meets the link switching conditions based on the state of the signal light of the optical cable, if the signal light state of the optical cable is abnormal when the initial sub-transmission link is the main path corresponding to the optical switch, it can be determined that the signal light of the optical cable meets the link switching conditions. If the signal light state of the optical cable is normal when the initial sub-transmission link is the backup path corresponding to the optical switch, it is determined that the signal light of the optical cable meets the link switching conditions. Optionally, the initial sub-transmission link includes a main path and a backup path. The main path can be the sub-transmission link where the interface of the signal light used to monitor the optical cable is located. In other words, the sub-transmission link where the optical switch connects to the interface of the signal light can be set as the main path. The interface of the signal light can also be called the main port.A backup path can be a sub-transmission link on the transmission link where the port of the signal light used to monitor the light source is located. That is, a sub-transmission link connected to the port of the light source can be designated as a backup path. For example, if the light source is an ASE light source, then the port of the light source's signal light can be an ASE port, also known as a backup port. The signal light on the main path can be called the main light. Optionally, during the deployment of optical switches in the optical transmission system, the main path and backup path in the optical transmission system can be determined by the port connected to the optical switch. For example, the sub-transmission link where the interface of the signal light indirectly connected to the switch is located is designated as the main path, and the sub-transmission link where the ASE interface directly connected to the switch is located is designated as the backup path. Sub-transmission links through which the signal light after the main path and backup path must pass can be designated as common paths. It should be noted that the above-described process and method for determining the primary path, backup path, and common path are merely illustrative examples and are not intended to impose specific limitations. In this embodiment, the primary path, backup path, and common path determined based on the specific location of the optical switches deployed in the actual situation are all within the protection scope of this embodiment. Optionally, after deploying the optical switches in the optical transmission system, the primary path, backup path, and common path can be determined in the above manner, and the status of the optical signal in the current optical cable can be monitored for abnormalities. If the current optical switch is operating on the primary path and the optical signal is abnormal, it can be determined that the link switching conditions are met, and the primary path can be switched to the backup path. If the current optical switch is operating on the backup path and the optical signal is normal, it can be determined that the link switching conditions are met, and the backup path can be switched back to the primary path. As an optional implementation, in response to the initial sub-transmission link being the main path of the optical switch and the signal light state of the optical cable being abnormal, determining that the signal light of the optical cable meets the link switching conditions includes: in response to the initial sub-transmission link being the main path of the optical switch and the signal light state of the light source being normal within a time period; if the signal light state of the optical cable is abnormal within a time period, then determining that the signal light of the optical cable meets the link switching conditions. In this embodiment, when the initial sub-transmission link is determined to be the main path and the signal light of the light source is normal within a time period, the state of the signal light of the optical cable can be monitored. If the state of the signal light of the optical cable is abnormal within that time period, then it can be determined that the monitored signal light of the optical cable meets the link switching conditions. The time period can be a holdoff time, which can be used for anti-shake filtering of instantaneous fluctuations and is generally set to the millisecond level.The time period can be a pre-set time interval or a time interval set manually based on the actual signal light processing. This is only an example and does not impose specific restrictions on the setting method of the time period. Optionally, if the initial sub-transmission link is the primary path, the status of the signal light of the current light source on the backup path can be monitored within the delay time period. At the same time, the status of the signal light on the primary path can also be monitored. If the signal light of the light source on the backup path is in a normal state within the delay time period, it can be determined that the backup path is normal and has not failed. If the signal light on the primary path is in an abnormal state at this time, it can be determined that the primary path has failed. At this time, it can be determined that the signal light meets the link switching conditions, that is, the primary path can be switched to the backup path for signal light transmission. Optionally, the overall switching logic of Switch prioritizes operation on the main path. At this time, it can detect whether the ASE light on the backup path is normal, and it can also detect whether the signal light of the optical cable on the main path is normal within the delay time period. When it is determined that the ASE light is normal and the signal light of the optical cable on the main path is abnormal, it can be determined that a fault has occurred on the main path and no fault has occurred on the backup path. At this time, it can be determined that the link switching conditions are met, and the main path can be automatically switched to the backup path for operation. As an optional implementation, in response to the initial sub-transmission link being the main path corresponding to the optical switch and the signal light of the light source being in a normal state, if the signal light of the optical cable is in an abnormal state, then it is determined that the signal light of the optical cable meets the link switching conditions. This includes: in response to the initial sub-transmission link being the main path of the optical switch and the signal light of the light source being in a normal state within a time period, if the signal light of the optical cable is in an abnormal state within a time period, then it is determined that the signal light of the optical cable meets the link switching conditions. In this embodiment, when the initial sub-transmission link is the main path of the optical switch and the signal light of the light source is in a normal state, if the signal light of the optical cable is in an abnormal state, during the process of determining that the signal light meets the link switching conditions, if the initial sub-transmission link is the main path of the optical switch and the signal light of the light source is in a normal state within a time period, the state of the signal light of the optical cable can be detected within a certain time period. If an abnormal state is detected, then it can be determined that the signal light of the optical cable meets the link switching conditions. Optionally, when the initial sub-transmission link is determined to be the main path, the signal light from the light source and the signal light from the optical cable can be monitored within a time period to determine whether the two signal lights are in normal condition. If it is determined within the time period that the signal light from the light source and the signal light from the optical cable are both in normal condition, it can be determined that the link switching condition is not met, and signal light transmission can still be carried out on the main path.Optionally, if the signal light from the light source is in a normal state within the time period, and the signal light from the optical cable is in an abnormal state, then it can be determined that the signal light from the optical cable meets the link switching conditions, and the signal light from the optical cable can be switched to the backup path for signal light transmission. Optionally, the main port of the optical switch can be used to monitor the signal light from the optical cable to determine whether it is in a normal state, and the backup port of the optical switch can be used to monitor the signal light from the light source to determine whether it is in a normal state. If the main port detects that the signal light from the optical cable is in an abnormal state, and the backup port detects that the signal light from the light source is in a normal state, it can be further determined whether it is within the time period. If it is not within the time period, then it can be determined that the link switching conditions are met, and the switch can be made to the backup path. If it is still within the time period, then the status of the two types of signal light can continue to be monitored through the main and backup ports within this time period until the time is no longer within this time period. For example, the data of the ASE light and the signal light on the optical cable can be polled and sampled through the primary and backup ports, and the fault status of the primary and backup paths can be determined by the sampled data. That is, the fault status of the primary path and the backup path can be determined by the data of the two types of signal light. If the current path is the primary path and the primary port determines that the primary path is faulty, and the backup port determines that the backup path is normal, it can be determined whether the current time is within the Holdoff timer period. If not, the switch can be made to the backup path. If so, the data of the two types of signal light can still be polled and sampled through the primary and backup ports until the current time is no longer within the Holdoff timer period. As an optional implementation, the method may include: if the state of the signal light of the optical cable changes from an abnormal state to a normal state within the time period, and / or the signal light of the light source changes from a normal state to an abnormal state within the time period, then the time period is reset. In this embodiment, if the state of the signal light of the optical cable changes from an abnormal state to a normal state within the time period, and / or the signal light of the light source changes from a normal state to an abnormal state within the time period, the time period can be recalculated. Optionally, the Holdoff Time timing is primarily used for anti-shake filtering of instantaneous fluctuations and is typically set to the millisecond level. Within the aforementioned timing period, if the channel change judgment result changes—that is, if the state of the optical fiber signal light changes within the timing period, and / or the state of the light source signal light changes—the timing period can be restarted to enhance the anti-shake effect. As an optional implementation, the method further includes: if the power of the light source signal light is equal to or higher than a first power threshold, then determining that the state of the light source signal light is normal within the time period.In this embodiment, the power of the signal light from the light source is detected within a time period. If the power of the signal light from the light source is equal to or higher than a first power threshold, the state of the signal light from the light source within the time period can be determined to be normal. Optionally, the power of the signal light from the light source and the power of the signal light from the optical cable can both be sampled data. The collected data can also be called monitoring data. The data type of the sampled data is not limited to optical power, alarm, etc. The above is only an example and no specific limitation is made here. The sampled data can be obtained by polling the primary and backup ports of the switch and can be used to determine the fault status of the primary and backup paths. The sampled data corresponds to a switching threshold. The switching threshold may include a first power threshold. The power of the signal light from the light source can also be called the port power of the light source. The first power threshold can also be called the power threshold. Optionally, monitoring data for switching can be obtained through the primary and backup ports of the optical switch. The monitoring data can be used to check the current switching status, that is, the monitoring data can be used to determine whether the link switching conditions are met. If the monitoring data sampled by the backup port is higher than the first power threshold, the signal light state of the light source can be determined to be normal. As an optional implementation, step S306, if the signal light of the optical cable meets the link switching conditions, then controlling the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state, includes: responding to the initial sub-transmission link being the main path of the optical switch, and the signal light of the optical cable meeting the link switching conditions, then controlling the optical switch to trigger a switching operation on the main path in a conducting state to obtain a backup path in a conducting state, wherein the target sub-transmission link includes a backup path. In this embodiment, during the process of detecting that the signal light of the optical cable meets the link switching conditions and performing a switching operation on the initial sub-transmission link, if the initial sub-transmission link is the main path of the optical switch, and if the signal light of the optical cable meets the link switching conditions, then controlling the optical switch to trigger a switching operation on the main path in a conducting state to obtain a backup path in a conducting state, wherein the target sub-transmission link may include a backup path. Optionally, during the operation of the optical switch on the main line, if the ASE light on the backup line is in a normal state and the signal light of the optical cable on the main line is in an abnormal state within the time period, it can be determined that the main line has failed while the backup line remains normal. In this case, automatic switching can be performed to the backup line for signal light transmission. Optionally, after the Holdoff Time period ends, if a fault is detected on the main line, a switchover can be performed to put the backup line into a conducting state for optical signal transmission.It can clear the Holdoff Time period and record the polled sampling monitoring data of the primary and backup ports. For example, corresponding switchover thresholds (which can be simply referred to as thresholds) can be configured for the primary and backup ports. After configuration, the monitoring data used for switchover can be polled through the primary and backup ports, and the switchover status can be detected as being on the primary or backup path, that is, determining whether the initial sub-transmission link is working on the primary or backup path. If it is on the primary path, and the monitoring data of the primary port is lower than the switchover threshold, and the monitoring data of the backup port is higher than the switchover threshold, it can be further determined whether it is during the Holdoff Time period. If not, it can switch to the backup path; otherwise, it can continue to use the primary and backup ports to poll and sample the monitoring data. As an optional implementation, step S308, outputting the signal light on the target sub-transmission link, includes: acquiring the signal light of the light source on the backup path; controlling the optical switch to output the signal light of the light source, wherein the spectrum of the output light source signal light is the same as the spectrum of the optical cable signal light. In this embodiment, during the process of outputting signal light on the target sub-transmission link, the signal light from the backup light source can be acquired, and the signal light from the light source can be output by controlling the optical switch. The spectrum of the output signal light from the light source is the same as the spectrum of the signal light from the optical cable; that is, the spectrum output from the backup route is essentially the same as the spectrum output from the main route. The spectrum can also be referred to as the spectral signal. The signal light from the optical cable on the main route can be referred to as the original signal. Optionally, when an upstream optical cable on the main route experiences an interruption fault, a switchover to the backup route can be triggered. Within milliseconds, the signal light is replaced with ASE light. That is, the ASE light from the backup route can be acquired, and the ASE light is transmitted through an optical switch. The output spectrum is essentially the same as the original signal spectrum, and the signal light from the optical cable can also be referred to as the original signal light. As an optional implementation, in response to the initial sub-transmission link being a backup path for an optical switch and the signal light state of the optical cable being normal, determining that the signal light of the optical cable meets the link switching conditions includes: in response to the initial sub-transmission link being a backup path for an optical switch, if the signal light state of the optical cable is normal within a time period, then determining that the signal light of the optical cable meets the link switching conditions. In this embodiment, when the initial sub-transmission link is a backup path for an optical switch, if the signal light state of the optical cable is normal within a time period, then it can be determined that the signal light of the optical cable meets the link switching conditions.Optionally, during the operation of the optical switch on the backup path, if the signal light of the optical cable on the main path is detected to be in a normal state within the time period, it can be determined that the fault on the main path has been resolved. At this time, automatic switching to the main path can be performed to transmit the signal light through the main path. Optionally, if within the Holdoff Time period, the primary and backup ports of the optical switch can continue to sample and monitor data. If, after the Holdoff Time period ends, it is determined that the fault on the main path has been resolved, a switchover can be performed to put the main path into a conducting state for optical signal transmission. The Holdoff Time period can be cleared, and the polled sampling monitoring data of the primary and backup ports can be recorded. For example, after configuring the switchover threshold of the primary and backup ports, the monitoring data used for switchover can be sampled through the primary and backup ports in a polling manner, and the switchover status can be detected as being on the main path or the backup path, that is, determining whether the initial sub-transmission link is operating on the main path or the backup path via a switchover. If the optical signal is on the backup path and the detection data at the primary port is not higher than the switching threshold, the current switching state can be maintained, meaning the backup path can continue to be used for optical signal transmission. If the optical signal is on the backup path and the monitoring data at the primary port is higher than the switching threshold, it can be further determined whether it is within the Holdoff Time period. If not, switching to the primary path is possible; otherwise, the monitoring data can continue to be sampled using both the primary and backup ports. As an optional implementation, the method further includes: if the state of the optical signal changes from a normal state to an abnormal state within the time period, the time period is reset. In this embodiment, if the state of the optical signal changes from a normal state to an abnormal state within the time period, the time period can be reset. Optionally, if the initial sub-transmission link is in standby mode with the optical switch in operation, and within the time period, the determined state of the optical signal on the main line changes from normal to abnormal, or from abnormal to normal, it can be determined that the switching judgment result has changed within the time period while the standby link is in operation. In this case, to enhance the anti-jitter effect, the time period can be restarted. For example, if the current switching state is in standby mode, and the switching judgment result changes during the Holdoff Time period, the timing period can be restarted to enhance the anti-jitter effect.As an optional implementation, step S306, if the optical cable signal light meets the link switching conditions, then controlling the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state, includes: responding to the initial sub-transmission link being a backup path of the optical switch, and the optical cable signal light meeting the link switching conditions, then controlling the optical switch to trigger a switching operation on the backup path in a conducting state to obtain a main path in a conducting state, wherein the target sub-transmission link includes the main path. In this embodiment, during the process of controlling the optical switch to trigger a switching operation on the initial sub-transmission link, if the initial sub-transmission link is a backup path of the optical switch, and the optical cable signal light is detected to meet the link conditions, then the optical switch can be controlled to trigger a switching operation on the backup path in the initial conducting state, so that the main path is in a conducting state, wherein the target sub-transmission link includes the main path. Optionally, if the optical switch is operating in the backup path, and the signal light of the optical cable on the main path meets the link conditions, it can be determined that the fault on the main path has been resolved and the main path is in a normal state. At this time, the optical switch can be automatically controlled to switch back to the main path. As an optional implementation, step S308, outputting the signal light on the target sub-transmission link, includes: acquiring the signal light of the optical cable on the main path; and controlling the optical switch to output the signal light of the optical cable. In this embodiment, during the process of outputting the signal light on the target sub-transmission link, the signal light of the optical cable on the main path can be acquired, and the optical switch can be controlled to output the signal light of the optical cable. Optionally, when the optical switch is operating in the backup path, if the fault on the main path is resolved, a switchback to the main path can be triggered, replacing the ASE light with the signal light within milliseconds. That is, the signal light on the main path can be acquired, and the signal light is transmitted through the optical switch. The output spectrum is basically consistent with the original signal spectrum. As an optional implementation, the method may include: if the power of the optical fiber's signal light is lower than a second power threshold, then determining the state of the optical fiber's signal light as abnormal; if the power of the optical fiber's signal light is equal to or higher than the second power threshold, then determining the state of the optical fiber's signal light as normal. In this embodiment, if the power of the optical fiber's signal light is lower than the second power threshold, then the state of the optical fiber's signal light can be determined to be abnormal. If the power of the optical fiber's signal light is higher than or equal to the second power threshold, then the state of the optical fiber's signal light can be determined to be normal. The power of the optical fiber's signal light can be the port power received by the Switch's main path. The second power threshold can also be called a threshold limit. The power of the optical fiber's signal light can also be included in the monitoring data.Optionally, the power of the signal light in the optical cable is polled and sampled through the main port of the optical switch. If the sampled power of the signal light is lower than a second power threshold, an anomaly in the signal light of the optical cable can be determined, i.e., a main path fault. If the sampled power of the signal light is higher than or equal to the second power threshold, the signal light of the optical cable can be determined to be normal, i.e., no main path fault has occurred. For example, after configuring the switching thresholds for the main and backup ports, monitoring data for switching can be polled and sampled through the main port. If the monitoring data of the main port is lower than the switching threshold, a main path fault can be determined; otherwise, no main path fault has occurred. The different methods and locations for deploying the optical switch in the optical transmission system in the above method of this embodiment will be further described below. As an optional implementation, the method may include: in response to an optical switch being deployed after a preamplifier in the optical transmission system and before a wavelength selective switch in the optical transmission system, creating a medium channel for the signal light of the optical cable and blocking noise light in non-signal frequency bands, wherein the power of the signal light from the light source after being filtered by the wavelength selective switch of the optical transmission system is the same as the power of the signal light from the optical cable. In this embodiment, the optical switch can be deployed after the preamplifier in the optical transmission system and before the wavelength selective switch, that is, the first deployment method of the optical switch in this embodiment is to deploy the optical switch between the preamplifier and the wavelength selective switch. In this case, the wavelength selective switch deployed after the preamplifier can be used to create a medium channel for the signal light of the optical cable, and this medium channel can be used to block noise light in non-signal frequency bands, thereby achieving filtering of the signal light from the light source after passing through the wavelength selective switch. The wavelength selective switch may be WSS-1 in the transmission link of this embodiment, or it may be called the first wavelength selective switch. The WSS may include a WSS common port. The power of the signal light from the light source, after being filtered by the wavelength selective switch of the optical transmission system, is the same as the power of the signal light from the optical cable. The signal light from the ASE light source before passing through the wavelength selective switch may contain noise light, which can also be called ASE noise light, and its corresponding spectrum can be called the ASE noise spectrum. Optionally, when the optical switch is deployed between PA and WSS-1, when the ASE noise light passes through WSS-1, WSS-1 can filter the ASE noise spectrum of the passing ASE noise light and output a spectrum that is essentially the same as the original signal light.The ASE component output spectrum uses the same power spectral density as the signal wavelength output by the PA. This means that through this optical switch deployment, the power of the signal light from the backup source after passing through WSS-1 is the same as the power of the signal light from the main optical cable. The port of the switch connected to the PA can be set as the main path, the port connected to the ASE can be set as the backup path, and the port connected to the WSS is the common path. Taking the forward direction as an example, when an upstream optical cable failure occurs, the power at the port receiving the main switch drops below a threshold, triggering a switchover to the backup path. Within milliseconds, the ASE light replaces the signal light, and after filtering by WSS-1, it is output downstream. This ensures that the output spectrum of the ASE component is essentially consistent with the original signal spectrum (the spectrum of the signal light from the main optical cable), thus eliminating the impact on the performance of the indirect channel. When the upstream optical cable interruption fault is recovered, the port power received by the main switch recovers to the expected value, triggering a switchback to the main switch. Within milliseconds, the switchover from ASE light back to signal light occurs, and the output spectral signal of WSS-1 returns to its state before the interruption. The output spectrum of the ASE component uses the same power spectral density as the signal wavelength output by the PA. Optionally, during the switchover process, if an upstream optical cable interruption fault occurs, the port power received by the main switch drops below a threshold, triggering a switchback to the backup switch. Within milliseconds, the ASE light replaces the signal light and is output downstream after filtering by WSS-1. The output spectrum is basically consistent with the original signal spectrum, thus eliminating the impact on the performance of the indirect channel. Optionally, during the fault recovery process, if the upstream optical cable interruption fault is recovered, the port power received by the main switch recovers to the expected value, triggering a switchback to the main switch. Within milliseconds, the switchover from ASE light back to signal light occurs, and the output spectral signal of WSS-1 returns to its state before the interruption. In this embodiment, the aforementioned ASE fast fill method, through the configuration of the switch located after the PA and before the WSS common port, achieves rapid switching of optical signals within milliseconds, thereby enabling rapid fault recovery and eliminating the impact on the performance of indirect channels. As an optional implementation, the method may include: in response to the optical switch being deployed before the preamplifier of the optical transmission system, adjusting the power of the signal light from the light source based on the gain value of the preamplifier, wherein the adjusted power of the signal light from the light source, after being filtered by the wavelength selective switch of the optical transmission system, is the same as the power of the signal light from the optical cable.In this embodiment, the optical switch can be deployed before the preamplifier in the optical transmission system. That is, the second deployment method of the optical switch in this embodiment is to deploy the optical switch before the preamplifier. The power of the signal light from the light source can be adjusted based on the gain value of the preamplifier. When the adjusted signal light from the light source passes through the wavelength selection switch in the optical transmission system, the wavelength selection switch filters the signal light from the light source, that is, it blocks noise waves in non-signal frequency bands, thereby making the power of the signal light from the light source after filtering the same as the signal light power of the light source. Optionally, in the ASE fast filling method where the switch is before the PA, the port of the switch connected to the main light can be set as the main path, the port connected to the ASE can be set as the backup path, and the port connected to the PA is the common path. The effects of fault occurrence and fault recovery are similar to the first deployment method of the optical switch described above, and the automatic switchover process is also similar to the process of the first deployment method. When the optical switch is deployed before the PA, when the ASE noise light passes through WSS-1, WSS-1 can filter the ASE noise spectrum of the passing ASE noise light and output a spectrum that is basically the same as the original signal light, so that the power of the ASE light after passing through WSS-1 is the same as the power of the original signal light. Optionally, the second deployment method described above has a lower ASE output power requirement than the first deployment method, but it will lead to an increase in the cross-segment loss before the PA. The ASE output power needs to be adjusted according to the actual PA gain value to ensure that the PA output power meets expectations after the switching occurs. In the embodiments of this disclosure, the second deployment method has a lower ASE output power requirement than the first deployment method, but it will lead to an increase in the cross-segment loss before the PA. This indicates that the second deployment method has a lower requirement for ASE output power, but it will also increase the cross-segment loss before the PA. As an optional implementation, the method may include: adjusting the power of the signal light from the light source based on the gain value of the gain equalizer, in response to the optical switch being deployed before the gain equalizer of the optical transmission system; and / or creating a medium channel for the signal light of the optical cable and blocking noise light in non-signal frequency bands; wherein the power of the adjusted signal light from the light source, after being filtered by the wavelength selective switch of the optical transmission system, is the same as the power of the signal light of the optical cable. In this embodiment, the optical switch can be deployed before the gain equalizer of the optical transmission system; that is, the third deployment method of the optical switch in this embodiment is to deploy the optical switch before the gain equalizer.In this scenario, the power of the light source's signal can be adjusted based on the gain value of the gain equalizer amplifier. Alternatively, a wavelength-selective switch in the optical transmission system can create a medium channel for the optical cable's signal light, which can then be used to block noise light from non-signal frequency bands. When the adjusted light source's signal passes through the wavelength-selective switch in the optical transmission system, the switch filters the signal light, removing noise light and ensuring that the power of the filtered signal light is the same as the power of the optical cable's signal light on the main line. Optionally, after the light source's signal light undergoes DGE adjustment via the EA, its power becomes the same as the EA's output power. That is, after a switchover between the main and backup lines, the light source's signal light, after passing through the EA amplifier, achieves the same output power as the EA. Optionally, EA represents an optical amplifier with DGE functionality. DGE often uses WSS to achieve channel equalization, which can create a media channel for the signal light on the WSS and block noise light from other frequency bands (non-signal frequency bands) that have not created a media channel. This prevents significant changes in EA output power after switching to ASE under non-full-wave conditions. The ASE fast-fill method with the switch before the EA corresponds to the third deployment method. The port of the switch connected to the main optical light can be set as the main path, the port connected to the ASE can be set as the backup path, and the port connected to the EA is the common path. Taking the forward direction as an example, when an upstream optical cable fails, the power of the port receiving the switch main path drops below the threshold, triggering a switchover to the backup path. Within milliseconds, the ASE light replaces the signal light, and after being filtered by the WSS in the EA, it is output downstream. The output spectrum is basically consistent with the original signal spectrum, thus eliminating the impact on the performance of the indirect channel. When the upstream optical cable outage is recovered, the port power of the main switch receiving line returns to the expected value, triggering a switchback to the main line. Within milliseconds, the switchback from ASE light back to signal light occurs, and the EA output spectral signal returns to its state before the outage. Optionally, the Dynamic Gain Equalizer (DGE) function describes the EA as an optical amplifier with Dynamic Gain Equalization (DGE) capability. DGE typically uses WSS to implement channel equalization, creating a Media Channel for the signal light on the WSS and blocking other frequency bands without created Media Channels to avoid significant changes in the EA output power after switching to ASE.Optionally, the rapid ASE filling process during fault occurrence and recovery includes replacing the signal light with ASE light when a fault occurs, outputting it downstream after WSS filtering within the EA, and switching back to the signal light from the ASE light when the fault recovers, restoring the EA output spectral signal to its state before the interruption. Optionally, expanding the ASE filling location through the third deployment method can effectively reduce the accumulation of SS effects within the optical multiplexing section (OMS). The output power of the ASE needs to be adjusted according to the actual gain value of the EA to ensure that the output power of the EA meets expectations after the switching occurs. As an optional implementation, the method may include: creating a medium channel for the signal light of the optical cable in response to the deployment of the optical switch in the gain equalizer of the optical transmission system, and blocking noise light in non-signal frequency bands. In this embodiment, the optical switch can be deployed in the gain equalizer of the optical transmission system; that is, the fourth deployment method of the optical switch in this embodiment is to deploy the optical switch in the gain equalizer. In this scenario, a media channel for the signal light of the optical cable can be created in the wavelength selective switch of the optical transmission system. This media channel can be used to block noise light of non-signal frequency bands mixed in with the passing signal light, thus achieving the effect of filtering the passing signal light. Optionally, the ASE fast-fill method with the switch in the EA is the fourth deployment method. Preamplifier and postamplifier (OA) components exist before and after the DGE in the internal structure of the EA. The port of the switch connected to the preamplifier OA can be set as the main path, the port connected to the ASE can be set as the backup path, and the port connected to the DGE is the common path. Similarly, a media channel for the signal light is created on the WSS, and noise light of other frequency bands (non-signal frequency bands) for which a media channel has not been created is blocked. Optionally, the fourth deployment method requires more ASE output power than the third deployment method, but it reduces the cross-segment loss before the EA. As an optional implementation, the method may include: in response to an optical switch deployed among multiple wavelength selection switches in an optical transmission system, if the state of the signal light from the light source is abnormal, switching the signal light from the light source to the signal light from a backup light source. In this embodiment, the optical switch can be deployed among multiple wavelength selection switches in the optical transmission system; that is, the fifth deployment method can be to replace the original fiber optic switch in the optical transmission system with an optical switch deployed among multiple wavelength selection switches. In this case, if the state of the signal light from the light source is abnormal, the signal light from the light source can be switched to the signal light from the backup light source.In this embodiment, the deployment method and fault handling process of optical switches can be explained by taking an optical transmission system containing two wavelength selection switches, such as a first wavelength selection switch and a second wavelength selection switch. The second wavelength selection switch can be WSS-2. It should be noted that the deployment of two wavelength selection switches in the optical transmission system is merely illustrative and not a specific limitation. There may be N WSSs in the optical transmission system, forming a ROADM. Any method and process that allows the deployment of optical switches among multiple wavelength selection switches is within the protection scope of this embodiment. Optionally, a Switch can be added at the input end of the WSS tributary port to achieve fast ASE filling. Within the ROADM node, the number of interconnections of WSS tributary ports increases exponentially with the increase of interconnection dimensions. Adding a large number of individual Switches to the input side of each WSS tributary port increases system complexity. A relatively feasible implementation is to use an optical switch matrix (Switch Matrix) instead of the Fiber Shuffle ASE fast filling method, corresponding to the fifth deployment method. The WSS branch ports between different dimensions are interconnected using Switch Matrix, and multiple ASE light sources are also connected to Switch Matrix _h. oOptionally, taking the forward direction as an example, port A of the Switch Matrix is ​​connected to the WSS-1 tributary as the main path, port B is connected to ASE-2 as the backup path, and port C is connected to the WSS-2 tributary as the common path. When an upstream optical cable interruption occurs, the optical power received at port A drops below a threshold, triggering a switchover to port B. Within milliseconds, the ASE-2 spectrum replaces the signal light, which is then filtered by WSS-2 and output downstream. The output spectrum is essentially consistent with the original signal spectrum, thus eliminating the impact on the performance of the indirect channel. When the upstream optical cable interruption is resolved, the port power received at port A returns to the expected value, triggering a switchover back to port A. Within milliseconds, the signal light is switched back from the ASE-2 spectrum, and the WSS-2 output spectrum signal returns to its state before the interruption. Optionally, taking the forward direction as an example, port A of the Switch Matrix is ​​connected to the WSS-1 tributary, port B to ASE-2, port D to ASE-1, and port C to the WSS-2 tributary. When an upstream optical cable interruption occurs, the optical power received at port A drops below a threshold, and ASE-2 spectrum is preferentially used for filling. However, when the optical power received at port B is below the threshold and the optical power received at port D is above the threshold, a switchover to port D is triggered. Within milliseconds, the ASE-1 spectrum replaces the signal light, which is then filtered by WSS-2 and output downstream. The output spectrum is essentially consistent with the original signal spectrum, thus eliminating the impact on the performance of the indirect channel. When the upstream optical cable interruption is resolved, the port power received at port A returns to the expected value, triggering a switchback back to port A. Within milliseconds, the signal light is switched back from ASE-1 light, and the WSS-2 output spectrum signal returns to its state before the interruption. This scheme can be extended to N-dimensional WSS interconnection, with M ASE light sources sharing protection, where N and M are positive integers greater than or equal to 2. In this embodiment, when a fault occurs, the Switch Matrix can achieve rapid switching from signal light to backup ASE light, and perform switching between ASE light and signal light within milliseconds. This approach can improve system reliability and rapid response capabilities. Optionally, in the event of a fault, it determines how to prioritize the selection of a suitable ASE light source for filling based on the optical power received at different ports, and how to perform rapid switching upon fault recovery. The advantage of this method is that it can dynamically select the ASE light source for filling based on the specific optical power conditions, thereby maximizing the preservation of signal light characteristics during a fault and ensuring normal system operation through rapid switching upon fault recovery.This method can be extended to N-dimensional WSS interconnection, with M ASE light sources sharing protection. This demonstrates the flexibility and scalability of the method, allowing for configuration and expansion according to actual needs. It is a complex yet efficient fault protection method based on an optical switching matrix, capable of intelligent switching and filling based on specific circumstances to ensure the system can quickly recover to normal operation in the event of a fault. As an optional implementation, the method may include: controlling a comb filter to filter the signal light from the light source, and / or controlling an optical amplifier to amplify the signal light from the light source. In this embodiment, a comb filter is deployed after the ASE to filter the signal light from the light source. Alternatively, an optical amplifier can be deployed after the ASE to amplify the signal light from the light source. The optical amplifier can also be called an optical amplification component. The comb filter can be a narrowband comb filter. Optionally, the ASE noise source is filled with spurious waves by WSS filtering. However, WSS filtering generally has a large channel bandwidth, which can easily cause crosstalk to adjacent channels. Therefore, a narrowband comb filter can be added after the ASE noise source to reduce crosstalk between adjacent channels. In this embodiment, the ASE fast filling method with the addition of a narrowband comb filter helps to reduce crosstalk between adjacent channels. In this scheme, a narrowband comb filter is added after the ASE noise source to filter out unwanted frequency bands, reduce interference to adjacent channels, and thus improve the stability and performance of the system. Such a setup can effectively reduce crosstalk, thereby improving the quality and stability of the optical signal. This is crucial for ensuring that the optical signal is not interfered with during transmission, improving the reliability and performance of the system. Optionally, the above-mentioned partial optical switch deployment method has high requirements for the output power of the ASE. An OA amplifier component can be added between the ASE and the switch to meet the output requirements, thus enabling fast ASE filling with OA amplification. In this embodiment, the method of adding an OA amplifier after the ASE helps to meet the output power requirements. This setup adds an 0A amplifier between the ASE and the switch to ensure the ASE's output power reaches the required level, thus providing sufficient optical power to fill the signal beam in the event of a failure. Such an 0A amplifier ensures the system can quickly return to normal operation in the event of a failure, improving system stability and reliability.As an optional implementation, the ports for monitoring the signal light of the light source set are deployed on an optical switch set. The light source set includes light sources, and the optical switch set includes optical switches. The method further includes: if the state of the signal light of the light source is abnormal within a time period, and the state of the signal light of the backup light source (excluding the light source) in the light source set is normal within the time period, then the signal light of the light source is switched to the signal light of the backup light source; the signal light of the backup light source is output through the port corresponding to the signal light of the light source on the optical switch. In this embodiment, if the state of the signal light of the light source is abnormal within a time period, and the state of the signal light of the backup light source (excluding the light source) in the light source set is normal within the time period, the signal light of the light source can be switched to the signal light of the backup light source, and the signal light of the backup light source can be output through the port corresponding to the signal light of the light source on the optical switch. The ports for monitoring the signal light of the light source set can all be deployed on the optical switch set. The optical switch set can be a Switch Matrix, which is used to share multiple ASE light sources and protect the ASE light sources. The backup light source can be an ASE light source in an ASE group. Optionally, in the above-described optical switch deployment method, if the ASE light source has a single point of failure, rapid replacement cannot be completed when the corresponding ASE light source fails. In this case, multiple ASEs can be combined into an ASE group, which can replace a single ASE light source. Optionally, the ASE group can solve the problem of a single point of failure in a single ASE light source. In this setting, multiple ASE light sources are combined into an ASE group to improve the stability and reliability of the optical transmission system. Optionally, a Switch Matrix is ​​used, with a total of N ASE light sources and 1 Switch Matrix forming an ASE group. ASE-1 is interconnected with the A1 port of the Switch Matrix, ASE-2 is interconnected with the A2 port of the Switch Matrix, and ASE-n is interconnected with the An port of the Switch Matrix. The output PortPm has a total of M ports, where m and n are port numbers, N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 1. Generally, N is greater than or equal to 1. In this embodiment of the disclosure, the ASE group is implemented using Switch Matrix.Multiple ASE light sources (ASE-1 to ASE-n) are interconnected with a Switch Matrix, and the Switch Matrix is connected to the output port. This solution can ensure that when one ASE light source fails, the optical transmission system can still obtain the required optical signal from other normally operating ASE light sources. This setup can minimize the impact of faults and ensure that the system can quickly resume normal operation in case of a failure. This is crucial for improving the reliability and stability of the optical transmission system. Optionally, the ASE group sharing protection switching logic and process may include: ASE-1 to ASE-m create cross-connections through the Switch Matrix to the output of PortPm, where m < n. A total of M outputs represent connections to M ASE-filled positions. Suppose there are a total of Q ports, PortPq, in the filling state, where q represents the serial number of the port in the ASE filling state, and Q represents the total number of ports in the ASE filling state, with Q <= M; an automatic switching threshold is configured on the SwitchMatrix APn port. At the same time, the Al~n ports have the ability to detect the input power. When the input optical power is lower than the threshold, the optical switch can be triggered to switch; the Al~n ports continuously poll the monitoring data for switching, such as the input optical power. Optionally, there are two ways of the ASE light source sharing logic: Let Ay be one of the remaining NM ports; assuming Ax is one of the ports A1~q, and Ay is one of the remaining NQ ports. Optionally, when the data monitored by port Ax is below a threshold and the data monitored by port Ay is above the threshold, the holdoff timer is started; otherwise, the data monitored by ports A1-n continues to be polled. Optionally, if it is still within the holdoff timer period, the data monitored by ports A1-n continues to be polled; if, within the holdoff timer period, the data monitored by port Ax is consistently below the threshold and the data monitored by port Ay is consistently above the threshold, the optical switch is started to switch port Ax to port Ay, and the holdoff timer period is cleared. Optionally, before the switchover is completed, the light source of ASE-x is output from the Port-x port via a crossover created based on the Switch Matrix. After the switchover is completed, the light source of ASE-x is replaced by ASE-y, and the light source of ASE-y is output from the Port-x port via a crossover created based on the Switch Matrix, thereby achieving shared protection of the ASE light source. As an optional implementation, the port for monitoring the signal light of the optical cable and the port for monitoring the signal light of the light source set are deployed on the optical switch set. The light source set includes light sources, and the optical switch set includes optical switches. The method further includes: merging the optical signals of the light source set to obtain a merged optical signal; dividing the merged optical signal to obtain multiple sub-optical signals; and determining the sub-optical signals as the signal light on the backup path. In this embodiment, the optical signals of the light source set can be merged to obtain a merged optical signal. The merged optical signal can be divided into multiple sub-optical signals. These sub-optical signals can be designated as the signal light on the backup path. The ports used to detect the optical cable and the ports used to monitor the light source set are deployed on an optical switch set. The light source set can include light sources. The optical switch set can include optical switches. Optionally, this embodiment can be implemented using a passive N:1 connector (Coupler) and a 1:M splitter (Splitter). There are a total of N ASE light sources. ASE-1 is interconnected with the A1 port of the Coupler, ASE-2 is interconnected with the A2 port of the Coupler, ASE-n is interconnected with the An port of the Coupler, and the Splitter outputs a total of M ports (PortPm). The Coupler combines the N ASE inputs into one channel, and then splits it into M channels through the Splitter.N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 1. Any ASE failure will result in a slight decrease in the output power of the M channels of the ASE group, and the compensation effect for the downstream SRS effect is controllable. This disclosure also provides another signal light processing method. Figure 4 is a flowchart of another signal light processing method according to an embodiment of this disclosure. As shown in Figure 4, this method is applied to an optical transmission system deployed in a data center network on which a cloud platform is established, and optical switches are deployed on the transmission links of the optical transmission system. It may include the following steps: Step S402: On the transmission link, determine the initial sub-transmission link that is in a conducting state triggered by the optical switch. In the technical solution provided by step S402 of this disclosure, the initial sub-transmission link in a conducting state where the optical switch is operating can be determined from the transmission link. Optionally, the optical switch will preferentially operate on the main path of the transmission link. If the main path fails, the optical switch will operate on the backup path. Step S404: Determine the link switching conditions corresponding to the initial sub-transmission link. In the technical solution provided in step S404 of this disclosure, after determining the initial sub-transmission link that is in a conducting state triggered by the optical switch on the transmission link, the link switching conditions corresponding to the initial sub-transmission link can be determined. The link switching conditions represent the conditions under which the optical switch triggers a switching operation on the initial sub-transmission link. Optionally, after determining the initial sub-transmission link where the optical switch is currently operating on the transmission link, the link switching conditions corresponding to the initial sub-transmission link can be determined, and it can be monitored whether the optical signal of the optical cable in the transmission link meets the aforementioned link switching conditions. If the optical switch is currently operating on the main path, the backup path switching conditions corresponding to the main path can be determined. If the optical switch is currently operating on the backup path, the main path switching conditions corresponding to the backup path can be determined. It is possible to monitor whether the signal light on the optical cable of the current transmission link meets the link switching conditions. If it is detected that the signal light on the optical cable of the current transmission link does not meet the link switching conditions, then the transmission remains in the initial sub-transmission link where the optical switch is currently operating. Step S406: Detect whether the signal light of the optical cable meets the link switching conditions. If the signal light of the optical cable meets the link switching conditions, control the optical switch to trigger the switching operation of the initial sub-transmission link, and obtain the target sub-transmission link in the conducting state.In the technical solution provided in step S406 of this disclosure, after determining the link switching conditions corresponding to the initial sub-transmission link, it is possible to detect whether the signal light of the optical cable meets the link switching conditions. If the signal light is detected to meet the link switching conditions, the optical switch can be controlled to trigger a switching operation on the initial sub-transmission link, switching from the initial sub-transmission link to the target sub-transmission link, thereby making the target sub-transmission link in a conducting state, and the optical switch can operate on the target sub-transmission link. Optionally, the upstream optical cable in the transmission link is detected to determine whether the optical cable has experienced an interruption fault. If so, it can be determined that the optical signal meets the link switching conditions. At this time, the optical switch receives the above-mentioned optical cable interruption situation and triggers the switching process, switching the initial sub-transmission link to the target sub-transmission link. Step S408: Output the signal light on the target sub-transmission link. In the technical solution provided by step S408 of this disclosure, after detecting that the signal light of the optical cable meets the link switching conditions, the optical switch is controlled to trigger the switching operation of the initial sub-transmission link. After obtaining the target sub-transmission link, the signal light required by the optical transmission system can be output from the target sub-transmission link, thereby ensuring the normal signal transmission status of the optical transmission system. The signal light on the target sub-transmission link meets the signal light required by the optical transmission system. Optionally, by switching the initial sub-transmission link to the target sub-transmission link as described above, not only can the optical transmission system be quickly restored from faults, but the spectral signal of the output signal light can also be restored to the state before the interruption fault. Step S410: Communicate with the cloud platform using the signal light. In the technical solution provided by step S410 of this disclosure, after outputting the signal light on the target sub-transmission link, the signal light can be used to communicate with the cloud platform. Through steps S402 to S410 of this disclosure, on the transmission link, an initial sub-transmission link that is in a conducting state triggered by an optical switch is determined; the link switching condition corresponding to the initial sub-transmission link is determined, wherein the link switching condition is used to represent the condition for the optical switch to trigger a switching operation on the initial sub-transmission link; whether the signal light of the optical cable meets the link switching condition is detected; if the signal light of the optical cable meets the link switching condition, the optical switch is controlled to trigger a switching operation on the initial sub-transmission link, thereby obtaining a target sub-transmission link in a conducting state; the signal light on the target sub-transmission link is output, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system; and communication with the cloud platform is achieved using the signal light, thereby realizing the technical effect of improving the processing effect of optical signals and solving the technical problem of poor processing effect of optical signals.According to an embodiment of this disclosure, an embodiment of an optical transmission system is also provided. Figure 5 is a schematic diagram of an optical transmission system according to an embodiment of this disclosure. As shown in Figure 5, the optical transmission system 500 may include: an input terminal 501, an optical switch 502, and an output terminal 503. The input terminal 501 is used to input the signal light of the optical cable. In this embodiment, the input terminal 501 can be used to input the signal light of the cable to be transmitted. Optionally, the signal light input at the input terminal 501 is transmitted to the optical switch 502. The optical switch 502 is used to be deployed on the transmission link and is used to trigger a switching operation on the initial sub-transmission link that is in a conducting state in response to the signal light of the optical cable satisfying the link switching condition, thereby obtaining a target sub-transmission link that is in a conducting state. The link switching condition is used to represent the condition under which the optical switch triggers the switching operation on the initial sub-transmission link. In this embodiment, the optical switch 502 can be deployed on the transmission link of the optical transmission system. When it is determined that the signal light of the optical cable meets the link switching conditions, the initial sub-transmission link can be switched to the target sub-transmission link, and the received signal light can be transmitted to the output end 503. Optionally, after determining the initial sub-transmission link where the optical switch is currently operating from the transmission link, the link switching conditions corresponding to the initial sub-transmission link can be determined, and it can be monitored whether the optical signal of the optical cable in the transmission link meets the aforementioned link switching conditions. Optionally, after determining the initial sub-transmission link where the optical switch is currently operating, if the optical switch is currently operating on the main path, the backup path switching conditions corresponding to the main path can be determined. If the optical switch is currently operating on the backup path, the main path switching conditions corresponding to the backup path can be determined. It is possible to monitor whether the signal light on the optical cable of the current transmission link meets the link switching conditions. If it is detected that the signal light of the optical cable on the current transmission link does not meet the link switching conditions, then it continues to operate on the initial sub-transmission link where the optical switch is currently operating. Optionally, the upstream optical cable in the transmission link is detected to determine if an interruption fault has occurred. If so, it can be determined that the optical signal meets the link switching conditions. At this time, the optical switch receives the information that the optical cable has been interrupted and triggers the switching process, switching the initial sub-transmission link to the target sub-transmission link. The output terminal 503 is used to output the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system. In this embodiment, the output terminal 503 can transmit the signal light on the target sub-transmission link.Optionally, by switching the initial sub-transmission link to the target sub-transmission link as described above, not only can the optical transmission system recover quickly from faults, but the spectral signal of the output signal light can also be restored to the state before the interruption fault, that is, the spectral signal required by the optical transmission system is met. In this embodiment, a signal light processing method system is provided. The signal light of the optical cable is input through the input terminal 501; in response to the signal light of the optical cable meeting the link switching condition, the optical switch 502 triggers a switching operation on the initial sub-transmission link in the conducting state to obtain the target sub-transmission link in the conducting state, wherein the link switching condition is used to indicate the condition for the optical switch to trigger the switching operation on the initial sub-transmission link; the signal light on the target sub-transmission link is output through the output terminal 503, wherein the signal light on the target sub-transmission link meets the signal light required by the optical transmission system, thereby achieving the technical effect of improving the processing effect of optical signals and solving the technical problem of poor processing effect of optical signals. The above system of this embodiment will be further described below. As an optional implementation, the optical switch is deployed in one of the following locations on the transmission link: after the preamplifier of the optical transmission system and before the first wavelength selection switch of the optical transmission system; before the preamplifier of the optical transmission system; before the gain equalizer of the optical transmission system; within the gain equalizer of the optical transmission system; or between multiple wavelength selection switches of the optical transmission system. In this embodiment, the optical switch can be deployed in five ways: the first is to deploy the optical switch between the preamplifier and the first wavelength selection switch; the second is to deploy the optical switch before the preamplifier; the third is to deploy the optical switch before the gain equalizer; the fourth is to deploy the optical switch within the gain equalizer; and the fifth is to deploy the optical switch between multiple wavelength selection switches. It should be noted that, in this embodiment, the number of wavelength selection switches is not specifically limited. It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this disclosure, such as the data being verified, are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.Currently, with the development of cloud computing, dense wavelength division multiplexing (DWDM) optical transmission systems possess the characteristics of high-capacity communication, and C-band-based optical transmission systems are widely used in data center networks. To further improve transmission capacity without increasing optical cable resources, utilizing L-band spectrum resources in optical fibers is a relatively economical approach. In recent years, multi-band technologies, especially C+L band transmission systems, have gradually begun practical deployment. Compared to single-C-band systems, multi-band systems exhibit a significantly increased stimulated Raman scattering (SRS) effect. In C+L systems, when the C or L band signal is interrupted, or when some channels are interrupted, the remaining channels will be affected by instantaneous gain or attenuation changes due to the SRS effect. The SRS effect gradually accumulates with optical cable transmission, significantly impacting signal transmission performance.

[0003] The SRS effect amplifies the fault domain, mainly in two aspects: First, when the entire C or L band is interrupted, it may lead to performance degradation in the remaining bands. Second, when some channels in the C or L band are interrupted, it may also lead to performance degradation in the remaining channels. This is especially true for mesh networks, where Reconfigurable Optical Add-Drop Multiplexing (ROADM) nodes have multiple dimensions. When a fiber optic cable fault in one dimension causes signal interruption, the power in other dimensions with cross-connection will change. The accumulation of the SRS effect in these dimensions may damage indirect channels (uninterrupted channels). To solve the problem of fault domain amplification caused by the SRS effect when a band or part of a channel is faulted, the conventional method is to use spontaneous emission noise in the amplifier as a dummy wave to fill the interrupted channel at an appropriate location. After filling, the overall SRS effect can remain the same as before the fault, thus eliminating the problem of the fault domain expanding to indirect channels. However, traditional ASE filling locations are typically connected to a wavelength selective switch tributary port different from the signal light. When the signal light is interrupted, the original media channel needs to be deleted on the WSS, and a new Media Channel needs to be created at the ASE port. This process is time-consuming, typically taking several seconds to minutes. From the occurrence of the fault to the completion of ASE switching and filling, the fault domain continues to expand. Therefore, the technical problem of poor optical signal processing remains. Furthermore, this disclosure provides a method for reducing optical network fault domain and rapid fault recovery. This method solves the technical problem of poor optical signal processing. Unlike traditional solutions that involve deleting the original media channel and creating a new one, this method is not only time-consuming but also typically takes several seconds to minutes. During this time, the fault domain may continue to expand. This method solves the technical problem of poor optical signal processing. In the embodiments of this disclosure, if signal light processing is required, an optical switch can be deployed on the transmission link of the optical transmission system processing the signal light. The initial sub-transmission link triggered by the optical switch and in a conducting state can be determined from the transmission link. The conditions under which the optical switch triggers a switching operation on the initial sub-transmission link can be determined, obtaining the corresponding link switching conditions. It can also monitor whether the current signal light on the optical cable meets the link switching conditions. If so, the optical switch can be controlled to trigger a switching operation on the initial sub-transmission link, thus obtaining the target sub-transmission link in a conducting state. Furthermore, the signal light on the target sub-transmission link that meets the requirements of the optical transmission system can be output.In this embodiment, an optical switch can be added to the transmission link of the optical transmission system. This optical switch enables rapid switching between the initial sub-transmission link where the signal light resides and the branch where the ASE light source is located. This achieves the purpose of reducing the fault domain and rapidly recovering from faults, and also reduces the fault domain range, thereby improving the technical effect of optical signal processing and solving the technical problem of poor optical signal processing performance. The method described in this embodiment will be further described below. In this embodiment, Figure 6 is a schematic diagram of an optical transmission system obtained by ASE filling in a related art. As shown in Figure 6, this optical transmission system can represent a C-band or L-band system. WSS-1 and WSS-2 represent the two dimensions of a wavelength selection switch (Reconfigurable Optical Add-Drop Multiplexer, or ROADM) in a wavelength division multiplexing optical fiber network. The WSS branch ports between different dimensions are interconnected using optical fiber switching. Each WSS dimension is also equipped with an ASE filling source, and each ASE can output a noise signal covering the entire band. Assume the incoming light signal from upstream enters through tributary port A of the WSS, and the ASE is connected to tributary port B of the WSS. Solid and dashed lines in the optical path diagram represent two opposite directions. Optionally, as shown in Figure 6, this involves the ROADM components in the optical network and their associated optical signal transmission and ASE padding. WSS-1 and WSS-2 represent two dimensions of the ROADM, meaning the ROADM system has multiple dimensions, allowing for optical signal modulation and routing in different directions. The WSS tributary ports between different dimensions are interconnected using fiber optic switching, indicating that this interconnection method allows for cross-connection and routing of optical signals between different dimensions. Each WSS dimension is equipped with an ASE padding source, meaning there is an ASE padding source in each dimension for rapid ASE padding in case of optical signal interruption, maintaining the noise signal across the entire band. The signal light and ASE are connected to the WSS via tributary ports. The signal light coming from upstream is connected to tributary port A of the WSS, while the ASE is connected to tributary port B of the WSS. This means that the signal light and ASE are connected through different tributary ports, and may be routed and connected through these ports.Optionally, as shown in Figure 6, taking the forward direction as an example, when an upstream optical cable is interrupted, WSS-2 tributary port A detects that the power has dropped below the threshold and initiates the ASE filling process: first, the Media Channel where port A is located is deleted; then, a Media Channel Map identical to that of port A is created from port B. After the ASE noise spectrum is filtered by WSS-2, the output spectrum is basically the same as the original signal light. When an upstream optical cable is interrupted, WSS-2 tributary port A detects that the power has dropped below the threshold and initiates the ASE filling process. This process includes: first, deleting the Media Channel where port A is located, and then creating a Media Channel Map identical to that of port A from port B. oSubsequently, after the ASE noise spectrum is filtered by WSS-2, the output spectrum is essentially the same as the original signal light. Optionally, since the deletion and creation of the Media Channel on the WSS takes a long time (more than seconds), the SRS effect may cause performance degradation of downstream indirect channels during this period. Therefore, the fault domain is still expanding, and the fault recovery time is slow. In this embodiment, a novel fast ASE filling method is proposed. The Media Channel of the WSS remains unchanged, and a switch is used to achieve the switching between the ASE spurious wave and the signal light, which can achieve millisecond-level fast switching and fault recovery, reducing the fault domain range compared with related technologies. Optionally, in the novel fast ASE filling method of this embodiment, the Media Channel of the WSS remains unchanged. This means that when a fault occurs, it is not necessary to delete or create the Media Channel, thereby simplifying the ASE filling process. This method utilizes a switch to switch between the ASE spurious wave and the signal light. This means that in the event of a fault, the system can quickly switch back to the ASE spurious wave and the signal light, thereby rapidly filling the ASE and restoring normal signal transmission. This novel ASE fast filling method achieves millisecond-level fast switching and fault recovery. This means the system can respond to and repair faults quickly within milliseconds, thereby reducing the fault domain. Reducing the fault domain means that this method can decrease the impact range of the fault, thus reducing the impact of the fault on the entire optical transmission system. In summary, this novel ASE fast filling method achieves rapid switching between the ASE spurious wave and the signal light through a switch, enabling millisecond-level fast switching and fault recovery, and reducing the fault domain. Figure 7 is a schematic diagram of an optical transmission system deploying an optical switch according to an embodiment of this disclosure. As shown in Figure 7, the optical switch can be placed after the PA and before the WSS-1, that is, the optical switch can be deployed between the PA and the WSS common port. The ASE component outputs a spectrum with the same power spectral density as the signal wavelength output by the PA. The port of the optical switch connected to the PA can be set as the main path, the port connected to the ASE can be set as the backup path, and the port connected to the WSS is the common path.Taking the forward direction as an example, when an upstream optical cable fails, the power received at the main optical switch port drops below a threshold, triggering a switchover to the backup path. Within milliseconds, the ASE light replaces the signal light, and after filtering by WSS-1, it is output downstream. The output spectrum is essentially consistent with the original signal spectrum, thus eliminating the impact on the performance of the indirect channel. When the upstream optical cable fails and is restored, the power received at the main optical switch port returns to the expected value, triggering a switchover back to the main path. Within milliseconds, the switchover from ASE light back to the signal light occurs, and the output spectrum of WSS-1 returns to its state before the interruption. The overall switching logic of Switch prioritizes operation on the main path. When a fault occurs on the main path, it automatically switches to the backup path. When the main path fails and is restored, manual control or automatic control can be used to switch back to the main path. Figure 8 is a flowchart of an automatic switching method for the primary and backup optical paths according to an embodiment of the present disclosure. As shown in Figure 8, the method may include the following steps: Step S801, configuring the switching thresholds for the primary and backup ports of the optical switch. In this embodiment, configuring the switching thresholds for the primary and backup ports allows automatic switching to be triggered when the monitored data is below the threshold. Optionally, configuring the switching thresholds for the primary and backup ports allows automatic switching to be triggered when the monitored data is below the threshold. These thresholds may be based on different types of data such as optical power and alarms. Step S802, polling and sampling monitoring data through the primary and backup ports. In this embodiment, the primary and backup ports can be used to poll and detect the corresponding monitoring data on the primary and backup paths. Optionally, polling and sampling the sampling data of the primary and backup ports of the switch is used to determine the fault status of the primary and backup paths. The fault status can be determined based on one or several sampling data points, and the data type is not limited to optical power, alarms, etc. Step S803, determining whether the current switching status is on the primary path. In this embodiment, it can be determined whether the current optical switch is operating on the main path, that is, whether the current reversal state is located on the main path. If yes, step S804 can be executed; otherwise, step S809 can be executed. Step S804: Determine whether the main port monitoring data is lower than a threshold. In this embodiment, if the current reversal state is located on the main path, it can be determined whether the monitoring data sampled by the main port is lower than the pre-configured switching threshold. If yes, it can be determined that the main path has failed, and step S805 can be executed; otherwise, it can be determined that the main path has not failed, and step S808 can be executed. oStep S805: Determine whether the backup port monitoring data is higher than the threshold. In this embodiment, if the primary port monitoring data is determined to be lower than the threshold, it can be further determined whether the detection data sampled by the backup port is higher than the pre-configured switching threshold. If yes, it can be determined that the current backup path is faulty and in a normal state, and step S806 can be executed. Otherwise, it can be determined that the backup path is also faulty, and the above process can be terminated. Optionally, check the current port switching status. If it is on the primary path, the switching judgment logic is whether the primary port monitoring data is lower than the threshold and the backup port monitoring data is higher than the threshold. If it is on the backup path, the switching judgment logic is whether the primary port monitoring data is higher than the threshold. Step S806: Determine whether it is within the Holdoff timer period. In this embodiment, after determining that the primary port monitoring data is lower than the threshold and the backup port monitoring data is higher than the threshold, it can be further determined whether it is still within the Holdoff timer period. If yes, step S802 can be executed; otherwise, step S807 can be executed. Step S807: Switch to the backup path for signal optical transmission. In this embodiment, if the current period is not within the Holdoff timer, the optical switch can be controlled to switch to the backup path for signal optical transmission. Step S808: Maintain the current switching state. In this embodiment, if the main port monitoring data is determined to be not lower than the threshold, it can be determined that the main path has not failed, and the current switching state can be maintained, that is, the main path can continue to be used for signal optical transmission. Step S809: Determine whether the main port monitoring data is higher than the threshold. In this embodiment, if the current switching state is in the backup path, it can be determined whether the main port monitoring data is higher than the threshold. This step can be used to determine whether the fault on the main path has been resolved. If yes, step S810 can be executed; otherwise, step S812 can be executed. O Step S810: Determine whether the Holdof timer is in progress. In this embodiment, if the main port monitoring data is determined to be higher than the threshold, it can be determined whether the current timer is in progress. If so, step S802 can be executed; otherwise, step S811 can be executed. oOptionally, the Holdoff Time timing is mainly used for anti-shake filtering of instantaneous fluctuations, and is generally set to the millisecond level. If it is still within the Holdoff Time timing period, the sampling and monitoring data are re-polled until the timing period ends. If the switchover judgment result changes within the timing period, the timing period can be restarted to enhance the anti-shake effect. Step S811: Switch to the main path for signal optical transmission. In this embodiment, after the Holdoff timing period ends, the optical switch can be controlled to switch to the main path for signal optical transmission. Optionally, after the Holdoff Time timing period ends, a Switch switchover is performed to clear the Holdoff Time timing period and continue to poll and sample the monitoring data of the main and backup ports. Step S812: Maintain the current switching state. In this embodiment, if it is determined that the main port monitoring data is not higher than the threshold, it can be determined that the main path is still in a fault state. At this time, the current switching state can be maintained, that is, the backup path is still used for signal optical transmission. Figure 9 is a schematic diagram of an optical transmission system with another optical switch deployed according to an embodiment of the present disclosure. As shown in Figure 9, the optical switch can also be deployed before the PA. The port of the optical switch connected to the main light can be set as the main path, the port connected to the ASE can be set as the backup path, and the port connected to the PA is the common path. The effects of fault occurrence and fault recovery are similar to the steps in Figure 8 above. Optionally, this deployment method has a lower ASE output power requirement than the first deployment method described above, but it will lead to increased cross-segment loss before the PA. The output power of the ASE needs to be adjusted according to the actual gain value of the PA to ensure that the output power of the PA meets expectations after the switching occurs. Figure 10 is a schematic diagram of an optical transmission system with another optical switch deployed according to an embodiment of the present disclosure. As shown in Figure 10, the optical switch can also be deployed before the EA. EA represents an optical amplifier with DGE function. DGE often uses WSS to achieve channel equalization. A Media Channel for signal light can be created on the WSS, and other frequency bands (non-signal light) that have not created a Media Channel can be blocked to prevent a large change in the output power of EA after switching to ASE under non-full-wave conditions. Figure 10 illustrates the rapid fill scheme for the ASE (Advanced Assist System) with the optical switch preceding the EA (Electronic Assist System). The port of the optical switch connected to the main optical path can be configured as the primary path, the port connected to the ASE can be configured as the backup path, and the port connected to the EA is the common path.Taking the forward direction as an example, when an upstream optical cable fails, the port power received by the main optical switch drops below the threshold, triggering a switchover to the backup path. Within milliseconds, the ASE light replaces the signal light, and after WSS filtering within the EA, it is output downstream. The output spectrum is basically consistent with the original signal spectrum, thus eliminating the impact on the performance of the indirect channel. When the upstream optical cable fails and is restored, the port power received by the main optical switch returns to the expected value, triggering a switchover to the main path. Within milliseconds, the ASE light switches back to the signal light, and the EA output spectrum signal returns to the state before the interruption. Optionally, the process and method of automatic switchover in the above deployment method are similar to the steps shown in Figure 8. Optionally, this deployment method expands the ASE filling position, which can effectively reduce the accumulation of SRS effect within 0MS. The output power of the ASE needs to be adjusted according to the actual gain value of the EA to ensure that the output power of the EA meets expectations after the switchover occurs. Figure 11 is a schematic diagram of an optical transmission system with another optical switch deployed according to an embodiment of the present disclosure. As shown in Figure 11, the optical switch can also be deployed in the EA. A schematic diagram of the ASE fast-fill scheme with the optical switch in the EA is shown in Figure 6. Figure 6 reveals the internal structure of the EA, with preamplifier and OA components before and after the DGE, respectively. The port of the optical switch connected to the preamplifier OA can be set as the main path, the port connected to the ASE can be set as the backup path, and the port connected to the DGE is the common path. Similarly, a Media Channel for the signal light is created on the WSS, and other frequency bands (non-signal light) without a Media Channel are blocked. Optionally, the effects of the above-described optical switch deployment method in the event of a fault and in the event of a fault recovery are similar to those shown in Figure 8. Optionally, the above-described optical switch deployment method requires higher ASE output power than deploying the optical switch before the EA, but it will reduce the cross-segment loss before the EA to a certain extent. Figure 12 is a schematic diagram of another optical transmission system with optical switches deployed according to an embodiment of the present disclosure. As shown in Figure 12, an optical switch matrix can also be used instead of fiber switching, that is, a Switch Matrix can be used instead of a Fiber Switch. Switches can also be added at the input end of the WSS tributary port to achieve fast ASE filling. Within the ROADM node, the number of interconnections of the WSS tributary ports increases exponentially with the increase of interconnection dimensions. The number of individual Switches added to the input side of each WSS tributary port is large, leading to an increase in system complexity.A relatively feasible implementation is to use an optical switch matrix instead of the Fiber Shuffle ASE fast filling scheme, as shown in Figure 12. The WSS branch ports between different dimensions are interconnected using Switch Matrix, and multiple ASE light sources are also connected to Switch Matrix_h. oFor example, as shown in Figure 12, taking the forward direction as an example, the Switch Matrix's port A is connected to the WSS-1 tributary and set as the main path, port B is connected to ASE-2 and set as the backup path, and port C is connected to the WSS-2 tributary and set as the common path. When an upstream optical cable interruption occurs, the optical power received at port A drops below a threshold, triggering a switchover to port B. Within milliseconds, the ASE-2 spectrum replaces the signal light, which is then filtered by WSS-2 and output downstream. The output spectrum is essentially consistent with the original signal spectrum, thus eliminating the impact on the performance of the indirect channel. When the upstream optical cable interruption is resolved, the port power received at port A returns to the expected value, triggering a switchover back to port A. Within milliseconds, the signal light is switched back from the ASE-2 spectrum, and the WSS-2 output spectrum signal returns to its state before the interruption. Optionally, the automatic switching process of Switch under the above optical switch deployment method is similar to the steps shown in Figure 8. Optionally, compared to related technologies, the above-described optical switch deployment method can provide shared protection for the time-based ASE filling light source. When ASE-2 fails or is interrupted, ASE-1 can be used as a backup light source for filling. For example, taking the forward direction as an example, port A of the Switch Matrix is ​​connected to the WSS-1 tributary, port B is connected to ASE-2, port D is connected to ASE-1, and port C is connected to the WSS-2 tributary. When an upstream optical cable fails, the optical power received at port A drops below a threshold, and ASE-2 spectrum is preferentially used for filling. However, when the optical power received at port B is below the threshold and the optical power received at port D is above the threshold, a switchover to port D is triggered. Within milliseconds, the ASE-1 spectrum replaces the signal light, which is then filtered by WSS-2 and output downstream. The output spectrum is basically consistent with the original signal spectrum, thereby eliminating the impact on the performance of the indirect channel. When the upstream optical cable interruption fault is recovered, the port power received by port A returns to the expected value, triggering a switchback back to port A. Within milliseconds, the optical signal is switched from ASE-1 back to the signal light, and the output spectral signal of WSS-2 returns to its state before the interruption. This scheme can be extended to N-dimensional WSS interconnection, with M ASE light sources sharing protection, where N and M are positive integers greater than or equal to 2. Figure 13 is a schematic diagram of a partial optical transmission system deploying a comb filter according to an embodiment of this disclosure. As shown in Figure 13, the partial optical transmission system may include spontaneous emission noise 1301, a comb filter 1302, and an optical switch 1303. That is, a comb filter can be added after the ASE.In the above method, the ASE noise source is filled with spurious waves by WSS filtering. However, the channel bandwidth of WSS filtering is generally large, which can easily cause crosstalk to adjacent channels. Therefore, a narrowband comb filter can be added after the ASE noise source to reduce crosstalk between adjacent channels. In the embodiments of this disclosure, the ASE fast filling method with the addition of a narrowband comb filter will help reduce crosstalk between adjacent channels. A narrowband comb filter is added after the ASE noise source to filter out unwanted frequency bands and reduce interference to adjacent channels, thereby improving the stability and performance of the system. Such a setting can effectively reduce crosstalk, thereby improving the quality and stability of the optical signal. This is important for ensuring that the optical signal is not interfered with during transmission, thus improving the reliability and performance of the system. Figure 14 is a schematic diagram of a partial optical transmission system with an optical amplifier deployed according to an embodiment of this disclosure. As shown in Figure 14, the partial optical transmission system may include spontaneous emission noise 1401, optical amplifier 1402 and optical switch 1403, that is, an OA amplifier can be added after the ASE. In some of the methods described above, the output power requirement for the ASE is relatively high, which can be met by adding an OA amplifier between the ASE and the switch. In the embodiments of this disclosure, the scheme of adding an OA amplifier after the ASE will help meet the output power requirement. This setting adds an OA amplifier between the ASE and the switch to ensure that the output power of the ASE reaches the required level, thereby providing sufficient optical power to fill the signal light in the event of a fault. Such an OA amplifier can ensure that the system can quickly recover to normal operation in the event of a fault, improving the stability and reliability of the optical transmission system. Figure 15 is a schematic diagram of expanding an ASE into an ASE group according to an embodiment of this disclosure. As shown in Figure 15, an ASE group can be composed of multiple ASEs. For example, if there are N ASEs, an ASE group can be composed of ASE-1, ASE-2, and ASE-n. A total of n ASE light sources and one optical switch matrix 1501 form an ASE group. ASE-1 is interconnected with the A1 port of the optical switch matrix 1501, ASE-2 is interconnected with the A2 port of the optical switch matrix, and ASE-n is interconnected with the An port of the optical switch matrix 1501. There are 111 output ports (Port 1~111), where m and n are port numbers, N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 1. Generally, N is greater than or equal to M. oFIG. 16 is a flowchart of a method for shared protection switching of an ASE group according to an embodiment of the present disclosure. As shown in FIG. 16, the method may include the following steps: Step S1601, create cross-connections of the ports of the optical switch matrix A1~m. In this embodiment, ASE-1 to ASE-m are cross-connected to the outputs of ports Port1~m through the Switch Matrix, m < n, and a total of M outputs represent connections to the positions filled with M ASEs. Assume that there are a total of Q ports, Port1~q, in the filling state, q represents the port number in the ASE filling state, and Q represents ASE Step S1603, poll and sample monitoring data through ports A1~n. In this embodiment, an automatic switching threshold is configured on the ports A1~n of the Switch Matrix. At the same time, the ports A1~n have the ability to detect the input power. When the input optical power is lower than the threshold, the optical switch can be triggered to switch. Optionally, the ports A1~n continuously poll the monitoring data for switching, such as the input optical power. Optionally, there are two ways of the ASE light source sharing logic: « Ax belongs to one of the ports in ports 1~m, Ay belongs Ax belongs to one of the ports in port 1, and Ay belongs to one of the remaining NQ ports. Step S1604: Determine whether the monitoring data of port Ax is lower than the threshold. In this embodiment, it can be determined whether the monitoring data sampled by port Ax is lower than the threshold. This can be used to determine whether port Ax has failed. If so, step S1605 can be executed; otherwise, step S1603 can be executed. Step S1605: Determine whether the monitoring data of port Ay is higher than the threshold. In this embodiment, after determining that the monitoring data sampled by port Ax is lower than the threshold, it can be further determined whether the monitoring data of port Ay is higher than the threshold. If so, port Ay can be determined to be in a normal state, and step S1606 can be executed; otherwise, port Ay can be determined to be in an abnormal state, and the entire process can end at this time. Optionally, when the data monitored by port Ax is below a threshold and the data monitored by port Ay is above the threshold, the holdoff timer is initiated; otherwise, the data monitored by port A1-n continues to be polled. Step S1606: Determine whether the holdoff timer is in progress. In this embodiment, it can be further determined whether the current period is within the holdoff timer. If yes, step S1603 can be executed; otherwise, step S1607 can be executed. Optionally, if the holdoff timer is still in progress, the data monitored by port A1-n continues to be polled. Step S1607: Switch port Ax to port Ay. In this embodiment, port Ax can be switched to port Ay. Optionally, if the data monitored by port Ax is continuously below the threshold and the data monitored by port Ay is continuously above the threshold during the holdoff timer, the optical switch is initiated to switch port Ax to port Ay, and the holdoff timer is cleared. Optionally, before the switch is completed, the light source of ASE-x is output from the Port-x port based on the cross created by the Switch Matrix. After the switch is completed, the light source of ASE-x is replaced by ASE-y, and the light source of ASE-y is output from the Port-x port based on the cross created by the Switch Matrix, thereby realizing the shared protection of ASE light sources. Figure 17 is a schematic diagram of another way to expand an ASE into an ASE group according to an embodiment of the present disclosure. As shown in Figure 17, the ASE group can be expanded using connector 1701 and distributor 1702.A passive N:1 connector and a 1:M splitter are used to implement a system with a total of N ASE light sources. ASE-1 is interconnected with the A1 port of the connector, ASE-2 with the A2 port of the connector, and ASE-n with the An port of the connector. The splitter outputs ports 1 to 111. The connector combines the N ASE inputs into one channel, which is then split into M channels by the splitter. N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 1. A failure in any ASE will slightly reduce the output power of the M channels in the ASE group, but the downstream SRS effect compensation is controllable. Optionally, by using ASE groups, the deployment methods of the four optical switches in Figures 7, 9, 10, and 11 can be readjusted. Figure 18(a) is a schematic diagram of an optical transmission system based on an ASE group of optical switches according to an embodiment of the present disclosure. As shown in Figure 18(a), it is the adjusted optical transmission system corresponding to Figure 7, which can integrate the ASEs connected to the optical switches deployed between the two PAs and WSS into one ASE group. Figure 18(b) is a schematic diagram of another optical transmission system based on an ASE group of optical switches according to an embodiment of the present disclosure. As shown in Figure 18(b), it is the adjusted optical transmission system corresponding to Figure 9, which can integrate the ASEs connected to the optical switches deployed in front of the two PAs into one ASE group. Figure 18(c) is a schematic diagram of another optical transmission system based on an ASE group of optical switches according to an embodiment of the present disclosure. As shown in Figure 18(c), it is the adjusted optical transmission system corresponding to Figure 10, which can integrate the ASEs corresponding to the two optical switches deployed in front of the EA into one ASE group. Figure 18(d) is a schematic diagram of another optical transmission system based on an ASE group with deployed optical switches according to an embodiment of the present disclosure. As shown in Figure 18(d), it is the adjusted optical transmission system corresponding to Figure 11, which can be deployed in an ASE group with an ASE that connects the optical switches in two EAs. In this embodiment of the present disclosure, if signal light needs to be processed, optical switches can be deployed on the transmission link of the optical transmission system for processing the signal light. The initial sub-transmission link that is triggered by the optical switch and is in the conducting state can be determined from the transmission link.The conditions for triggering the switching operation of the initial sub-transmission link by the optical switch can be determined, and the corresponding link switching conditions can be obtained. It is also possible to monitor whether the signal light currently on the optical cable meets the link switching conditions. If so, the optical switch can be controlled to trigger the switching operation of the initial sub-transmission link, thereby obtaining the target sub-transmission link in a conducting state. The signal light on the target sub-transmission link that meets the requirements of the optical transmission system can be output. In this embodiment, an optical switch can be added to the transmission link of the optical transmission system, enabling rapid switching between the initial sub-transmission link where the signal light is located and the branch where the ASE light source is located. This achieves the purpose of reducing the fault domain and rapidly recovering from faults, and can also reduce the fault domain range, thereby improving the technical effect of optical signal processing and solving the technical problem of poor optical signal processing performance. According to this embodiment, a signal light processing device for implementing the signal light processing method shown in Figure 3 is also provided. Figure 19 is a schematic diagram of a signal light processing device according to an embodiment of the present disclosure. As shown in Figure 19, the signal light processing device 1900 may include: a first determining component 1902, a second determining component 1904, a first control component 1906, and a first output component 1908. The first determining component 1902 is used to determine an initial sub-transmission link that is in a conducting state triggered by an optical switch on the transmission link. The second determining component 1904 is used to determine the link switching conditions corresponding to the initial sub-transmission link, wherein the link switching conditions represent the conditions under which the optical switch triggers a switching operation on the initial sub-transmission link. The first control component 1906 is used to detect whether the signal light of the optical cable meets the link switching conditions. If the signal light of the optical cable meets the link switching conditions, it controls the optical switch to trigger a switching operation on the initial sub-transmission link, thereby obtaining a target sub-transmission link in a conducting state. The first output component 1908 is used to output the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system. Here, the first determining component 1902, the second determining component 1904, the first control component 1906, and the first output component 1908 correspond to steps S302 to S308 in Embodiment 1. The four components and the corresponding steps implement the same instances and application scenarios, but are not limited to the content disclosed in Embodiment 1.It should be noted that the aforementioned components may be hardware or software components stored in a memory (e.g., memory 104) and processed by one or more processors (e.g., processors 102a, 102b, ..., 102n). These components may also run as part of a device in the computer terminal G provided in Embodiment 5. According to embodiments of this disclosure, a signal light processing apparatus for implementing the signal light processing method shown in FIG4 is also provided. FIG20 is a schematic diagram of a signal light processing apparatus according to an embodiment of this disclosure. As shown in FIG20, the signal light processing apparatus 2000 may include: a third determining component 2002, a fourth determining component 2004, a second control component 2006, a second output component 2008, and a communication component 2010. The third determining component 2002 is used to determine, on the transmission link, an initial sub-transmission link that is in a conducting state triggered by an optical switch. The fourth determining component 2004 is used to determine the link switching conditions corresponding to the initial sub-transmission link, wherein the link switching conditions represent the conditions under which the optical switch triggers the switching operation on the initial sub-transmission link. The second control component 2006 is used to detect whether the signal light of the optical cable meets the link switching conditions. If the signal light of the optical cable meets the link switching conditions, the optical switch is controlled to trigger the switching operation on the initial sub-transmission link, resulting in a target sub-transmission link in a conducting state. The second output component 2008 is used to output the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system. The communication component 2010 is used to communicate with the cloud platform using the signal light. It should be noted that the third determining component 2002, the fourth determining component 2004, the second control component 2006, the second output component 2008, and the communication component 2010 correspond to steps S402 to S410 in Embodiment 1. The four components and the corresponding steps implement the same examples and application scenarios, but are not limited to the content disclosed in Embodiment 1. It should be noted that the aforementioned components can be hardware or software components stored in a memory (e.g., memory 104) and processed by one or more processors (e.g., processors 102a, 102b, ..., 102n). These components can also run as part of the device in the computer terminal G provided in Embodiment 5. In this signal light processing device, if signal light processing is required, an optical switch can be deployed on the transmission link of the optical transmission system for processing the signal light. An initial sub-transmission link that is in a conducting state triggered by the optical switch can be determined from the transmission link.The conditions for triggering the switching operation of the initial sub-transmission link by the optical switch can be determined, the corresponding link switching conditions can be obtained, and it can be detected whether the signal light currently on the optical cable meets the link switching conditions. If the signal light on the optical cable meets the link switching conditions, the optical switch can be controlled to trigger the switching operation of the initial sub-transmission link, thereby obtaining the target sub-transmission link in a conducting state. The signal light on the target sub-transmission link that meets the requirements of the optical transmission system can be output. In this embodiment, an optical switch can be added to the transmission link of the optical transmission system, and the optical switch can realize the rapid switching between the initial sub-transmission link where the signal light is located and the branch where the ASE light source is located. This achieves the purpose of reducing the fault domain and quickly recovering from the fault, and can also achieve the purpose of narrowing the fault domain range, thereby achieving the technical effect of improving the processing effect of optical signals and solving the technical problem of poor processing effect of optical signals. The embodiments of this disclosure can provide a computer terminal, which can be any computer terminal device in a group of computer terminals. Optionally, in this embodiment, the above-mentioned computer terminal can also be replaced by a mobile terminal or other terminal device. Optionally, in this embodiment, the computer terminal may be located in at least one of the multiple network devices in a computer network. In this embodiment, the computer terminal may execute the program code of the following steps in the signal light processing method: On the transmission link, determine an initial sub-transmission link that is in a conducting state triggered by an optical switch; determine the link switching condition corresponding to the initial sub-transmission link, wherein the link switching condition is used to represent the condition for the optical switch to trigger a switching operation on the initial sub-transmission link; detect whether the signal light of the optical cable meets the link switching condition, and if the signal light of the optical cable meets the link switching condition, control the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state; output the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light required by the optical transmission system. Optionally, FIG21 is a structural block diagram of a computer terminal according to an embodiment of the present disclosure. As shown in FIG21, the computer terminal G may include: one or more (only one is shown in the figure) processors 2102, memory 2104, and transmission devices 2106. The memory can be used to store software programs and components, such as the program instructions / components corresponding to the signal light processing method and apparatus in this embodiment of the present disclosure. The processor executes various functional applications and data processing by running the software programs and components stored in the memory, thereby realizing the above-mentioned signal light processing method.The memory may include high-speed random access memory (RAM) and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, which can be connected to terminal A via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks (LANs), mobile communication networks, and combinations thereof. Optionally, the processor may also execute program code that performs the following steps: monitors the state of the signal light in the optical cable; and determines, based on the state of the signal light in the optical cable, whether the signal light in the optical cable meets the link switching conditions. Optionally, the processor may also execute program code for the following steps: In response to the initial sub-transmission link being the main path corresponding to the optical switch, and the signal light state of the optical cable being abnormal, determine that the signal light of the optical cable meets the link switching conditions, wherein the main path is the sub-transmission link where the port used to monitor the signal light of the optical cable is located on the transmission link; In response to the initial sub-transmission link being the backup path corresponding to the optical switch, and the signal light state of the optical cable being normal, determine that the signal light of the optical cable meets the link switching conditions, wherein the backup path is the sub-transmission link where the port used to monitor the signal light of the light source is located on the transmission link. Optionally, the processor may also execute program code for the following steps: In response to the initial sub-transmission link being the main path of the optical switch, and the signal light state of the light source being normal within a time period, if the signal light state of the optical cable is abnormal within a time period, determine that the signal light of the optical cable meets the link switching conditions. Optionally, the processor may also execute program code for the following steps: In response to the initial sub-transmission link being the main path of the optical switch, and the signal light of the light source being in a normal state within the time period, if the signal light of the optical cable is in an abnormal state within the time period, then determine that the signal light of the optical cable meets the link switching condition. Optionally, the processor may also execute program code for the following steps: If the signal light of the optical cable switches from an abnormal state to a normal state within the time period, and / or, the signal light of the light source switches from a normal state to an abnormal state within the time period, then reset the time period. Optionally, the processor may also execute program code for the following steps: If the power of the signal light of the light source is equal to or higher than a first power threshold, then determine that the signal light of the light source is in a normal state within the time period. Optionally, the processor may also execute program code that performs the following steps: In response to the initial sub-transmission link being the main path of the optical switch and the optical cable signal light satisfying the link switching conditions, the optical switch is controlled to trigger a switching operation on the main path in the conducting state to obtain a backup path in the conducting state, wherein the target sub-transmission link includes the backup path.Optionally, the processor may also execute program code that performs the following steps: acquiring the signal light from the light source on the backup line; controlling the optical switch to output the signal light from the light source, wherein the spectrum of the output signal light from the light source is the same as the spectrum of the signal light from the optical cable. Optionally, the processor may also execute program code for the following steps: In response to the initial sub-transmission link being a backup path for the optical switch, and the signal light state of the optical cable being in a normal state within the time period, determine that the signal light of the optical cable meets the link switching conditions. Optionally, the processor may also execute program code for the following steps: If the signal light state of the optical cable switches from a normal state to an abnormal state within the time period, reset the time period. Optionally, the processor may also execute program code for the following steps: In response to the initial sub-transmission link being a backup path for the optical switch, and the signal light of the optical cable meeting the link switching conditions, control the optical switch to trigger a switching operation on the backup path to obtain the main path in a conducting state, wherein the target sub-transmission link includes the main path. Optionally, the processor may also execute program code for the following steps: Obtain the signal light of the optical cable on the main path; Control the optical switch to output the signal light of the optical cable. Optionally, the processor may also execute program code for the following steps: If the power of the signal light of the optical cable is lower than a second power threshold, determine that the signal light state of the optical cable is an abnormal state. If the power of the signal light in the optical cable is equal to or higher than the second power threshold, then the state of the signal light in the optical cable is determined to be normal. Optionally, the processor may also execute program code for the following steps: In response to the optical switch being deployed after the preamplifier in the optical transmission system and before the wavelength selection switch in the optical transmission system, the power spectral density of the optical signal from the optical cable output by the preamplifier is determined as the power spectral density of the signal light from the light source. Optionally, the processor may also execute program code for the following steps: In response to the optical switch being deployed before the preamplifier in the optical transmission system, the power of the signal light from the light source is adjusted based on the gain value of the preamplifier, wherein the adjusted power of the signal light from the light source is used to make the power of the preamplifier meet the corresponding target power. Optionally, the processor may also execute program code for the following steps: In response to the optical switch being deployed before the gain equalizer in the optical transmission system, the power of the signal light from the light source is adjusted based on the gain value of the gain equalizer; and / or, a medium channel for the signal light of the optical cable is created, and non-signal light is blocked; wherein, The adjusted power of the signal light from the light source is used to ensure that the power of the gain equalizer meets the corresponding target power.Optionally, the processor may also execute program code for the following steps: In response to the optical switch being deployed in the gain equalizer of the optical transmission system, create a medium channel for the signal light of the optical cable and block non-signal light. Optionally, the processor may also execute program code for the following steps: In response to the optical switch being deployed between the first wavelength selection switch and the second wavelength selection switch of the optical transmission system, if the state of the signal light of the light source is abnormal, switch the signal light of the light source to the signal light of the backup light source. Optionally, the processor may also execute program code for the following steps: Control the comb filter to filter the signal light of the light source, and / or control the optical amplifier to amplify the signal light of the light source. Optionally, the processor may also execute program code for the following steps: If the state of the signal light of the light source is abnormal within a time period, and the state of the signal light of the backup light source (excluding the light source itself) is normal within the time period, switch the signal light of the light source to the signal light of the backup light source; output the signal light of the backup light source through the port corresponding to the signal light of the light source on the optical switch. Optionally, the processor can also execute program code for the following steps: merging the optical signals of the light source set to obtain a merged optical signal; dividing the merged optical signal to obtain multiple sub-optical signals; and identifying the sub-optical signals as the signal light on the backup path. The processor can call the information and application program stored in the memory through the transmission device to execute the following steps: on the transmission link, determining the initial sub-transmission link that is in a conducting state triggered by an optical switch; determining the link switching condition corresponding to the initial sub-transmission link, wherein the link switching condition represents the condition for the optical switch to trigger a switching operation on the initial sub-transmission link; detecting whether the signal light of the optical cable meets the link switching condition; if the signal light of the optical cable meets the link switching condition, controlling the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state; outputting the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system; and communicating with the cloud platform using the signal light. This disclosure provides a method for processing signal light. In this embodiment of the disclosure, if signal light needs to be processed, an optical switch can be deployed on the transmission link of the optical transmission system for processing the signal light. An initial sub-transmission link that is in a conducting state triggered by the optical switch can be determined from the transmission link. The conditions under which the optical switch triggers a switching operation on the initial sub-transmission link can be determined, obtaining the corresponding link switching conditions, and it can be detected whether the signal light currently on the optical cable meets the link switching conditions.If the signal light on the optical cable meets the link switching conditions, the optical switch can be controlled to trigger the switching operation of the initial sub-transmission link, thereby obtaining the target sub-transmission link in a conducting state. The signal light on the target sub-transmission link that meets the requirements of the optical transmission system can then be output. In this embodiment, an optical switch can be added to the transmission link of the optical transmission system, enabling rapid switching between the initial sub-transmission link where the signal light is located and the branch where the ASE light source is located. This achieves the purpose of reducing the fault domain and rapidly recovering from faults, and also reduces the fault domain range, thereby improving the technical effect of optical signal processing and solving the technical problem of poor optical signal processing performance. Those skilled in the art will understand that the structure shown in Figure 21 is merely illustrative, and the computer terminal G can also be a smartphone (such as an Android phone, iOS phone, etc.), tablet computer, handheld computer, mobile internet device (MID), PAD, etc. Figure 21 does not limit the structure of the computer terminal G described above. For example, the computer terminal G may include more or fewer components (such as network interfaces, display devices, etc.) than those shown in FIG. 21, or have a different configuration than that shown in FIG. 21. Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. This program can be stored in a computer-readable storage medium, which may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc. Embodiments of this disclosure also provide a computer-readable storage medium. Optionally, in this embodiment, the computer-readable storage medium can be used to store the program code executed by the signal light processing method provided in Embodiment 1 above. Optionally, in this embodiment, the computer-readable storage medium can be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals.Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: On the transmission link, determining an initial sub-transmission link that is in a conducting state triggered by an optical switch; determining the link switching condition corresponding to the initial sub-transmission link, wherein the link switching condition is used to represent the condition for the optical switch to trigger a switching operation on the initial sub-transmission link; detecting whether the signal light of the optical cable meets the link switching condition; if the signal light of the optical cable meets the link switching condition, controlling the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state; outputting the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system. Optionally, the above-mentioned computer-readable storage medium may also execute program code for the following steps: monitoring the state of the signal light of the optical cable; determining whether the signal light of the optical cable meets the link switching condition based on the state of the signal light of the optical cable. Optionally, the computer-readable storage medium may also execute program code for the following steps: In response to the initial sub-transmission link being the main path corresponding to the optical switch, and the signal light state of the optical cable being abnormal, determine that the signal light of the optical cable meets the link switching conditions, wherein the main path is the sub-transmission link on the transmission link where the port used to monitor the signal light of the optical cable is located; In response to the initial sub-transmission link being the backup path corresponding to the optical switch, and the signal light state of the optical cable being normal, determine that the signal light of the optical cable meets the link switching conditions, wherein the backup path is the sub-transmission link on the transmission link where the port used to monitor the signal light of the light source is located. Optionally, the computer-readable storage medium may also execute program code for the following steps: In response to the initial sub-transmission link being the main path of the optical switch, and the signal light state of the light source being normal within a time period, if the signal light state of the optical cable is abnormal within a time period, determine that the signal light of the optical cable meets the link switching conditions. Optionally, the computer-readable storage medium may also execute program code for the following steps: In response to the initial sub-transmission link being the main path of an optical switch, and the signal light of the light source being in a normal state within the time period, if the signal light of the optical cable is in an abnormal state within the time period, then determine that the signal light of the optical cable meets the link switching conditions. Optionally, the computer-readable storage medium may also execute program code for the following steps: If the signal light of the optical cable switches from an abnormal state to a normal state within the time period, and / or, the signal light of the light source switches from a normal state to an abnormal state within the time period, then reset the time period. Optionally, the computer-readable storage medium may also execute program code for the following steps: If the power of the signal light of the light source is equal to or higher than a first power threshold, then determine that the signal light of the light source is in a normal state within the time period.Optionally, the computer-readable storage medium may also execute program code for the following steps: In response to the initial sub-transmission link being the main path of an optical switch, and the signal light of the optical cable satisfying the link switching conditions, controlling the optical switch to trigger a switching operation on the main path in the conducting state, obtaining a backup path in the conducting state, wherein the target sub-transmission link includes the backup path. Optionally, the computer-readable storage medium may also execute program code for the following steps: Acquiring the signal light of a light source on the backup path; Controlling the optical switch to output the signal light of the light source, wherein the spectrum of the output signal light of the light source is the same as the spectrum of the signal light of the optical cable. Optionally, the computer-readable storage medium may also execute program code for the following steps: In response to the initial sub-transmission link being the backup path of an optical switch, if the state of the signal light of the optical cable is normal within a time period, then determining that the signal light of the optical cable satisfies the link switching conditions. Optionally, the computer-readable storage medium may also execute program code for the following steps: If the state of the signal light of the optical cable switches from a normal state to an abnormal state within a time period, then resetting the time period. Optionally, the computer-readable storage medium may also execute program code for the following steps: In response to the initial sub-transmission link being a backup path for an optical switch, if the signal light of the optical cable meets the link switching conditions, control the optical switch to trigger a switching operation on the backup path in the conducting state, thereby obtaining the main path in the conducting state, wherein the target sub-transmission link includes the main path. Optionally, the computer-readable storage medium may also execute program code for the following steps: Acquire the signal light of the optical cable on the main path; Control the optical switch to output the signal light of the optical cable. Optionally, the computer-readable storage medium may also execute program code for the following steps: If the power of the signal light of the optical cable is lower than a second power threshold, determine that the state of the signal light of the optical cable is an abnormal state; If the power of the signal light of the optical cable is equal to or higher than the second power threshold, determine that the state of the signal light of the optical cable is a normal state. Optionally, the computer-readable storage medium may also execute program code that performs the following steps: In response to the optical switch being deployed after the preamplifier in the optical transmission system and before the wavelength selection switch in the optical transmission system, the power spectral density of the optical signal from the optical cable output by the preamplifier is determined as the power spectral density of the signal light from the light source. Optionally, the computer-readable storage medium may also execute program code that performs the following steps: In response to the optical switch being deployed before the preamplifier in the optical transmission system, the power of the signal light from the light source is adjusted based on the gain value of the preamplifier, wherein the adjusted power of the signal light from the light source is used to ensure that the power of the preamplifier meets a corresponding target power.Optionally, the computer-readable storage medium may also execute program code that performs the following steps: In response to an optical switch deployed before the gain equalizer in the optical transmission system, adjusting the power of the signal light from the light source based on the gain value of the gain equalizer; and / or, creating a medium path for the signal light of the optical cable and blocking non-signal light; wherein the adjusted power of the signal light from the light source is used to ensure that the power of the gain equalizer meets the corresponding target power. Optionally, the computer-readable storage medium may also execute program code that performs the following steps: In response to an optical switch deployed within the gain equalizer in the optical transmission system, creating a medium path for the signal light of the optical cable and blocking non-signal light. Optionally, the computer-readable storage medium may also execute program code that performs the following steps: In response to an optical switch deployed between a first wavelength selection switch and a second wavelength selection switch in the optical transmission system, if the state of the signal light from the light source is abnormal, switching the signal light from the light source to the signal light from a backup light source. Optionally, the computer-readable storage medium may also execute program code that performs the following steps: controlling a comb filter to filter the signal light from the light source, and / or controlling an optical amplifier to amplify the signal light from the light source. Optionally, the computer-readable storage medium may also execute program code that performs the following steps: if the state of the signal light from the light source is abnormal within a time period, and the state of the signal light from the backup light source (excluding the light source itself) is normal within the time period, then the signal light from the light source is switched to the signal light from the backup light source; the signal light from the backup light source is output through the port corresponding to the signal light from the light source on the optical switch. Optionally, the computer-readable storage medium may also execute program code that performs the following steps: merging the optical signals from the light source set to obtain a merged optical signal; dividing the merged optical signal to obtain multiple sub-optical signals; and identifying the sub-optical signals as the signal light on the backup path. As an optional example, the computer-readable storage medium is configured to store program code for performing the following steps: On the transmission link, determining an initial sub-transmission link that is in a conducting state triggered by an optical switch; determining the link switching condition corresponding to the initial sub-transmission link, wherein the link switching condition is used to represent the condition for the optical switch to trigger a switching operation on the initial sub-transmission link; detecting whether the signal light of the optical cable meets the link switching condition, and if the signal light of the optical cable meets the link switching condition, controlling the optical switch to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in a conducting state; outputting the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system; and communicating with the cloud platform using the signal light.Embodiments of this disclosure may provide an electronic device that may include a memory and a processor. FIG22 is a block diagram of an electronic device for a signal light processing method according to an embodiment of this disclosure. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the disclosure described and / or claimed herein. As shown in FIG22, device 2200 includes computing component 2201, which can perform various appropriate actions and processes according to a computer program stored in read-only memory (ROM) 2202 or a computer program loaded from storage component 2208 into random access memory (RAM) 2203. RAM 2203 can also store various programs and data required for the operation of device 2200. Computing components 2201, ROM 2202, and RAM 2203 are interconnected via bus 2204. Input / output (I / O) interface 2205 is also connected to bus 2204. Multiple components in device 2200 are connected to I / O interface 2205, including: input components 2206, such as a keyboard, mouse, etc.; output components 2204, such as various types of displays, speakers, etc.; storage components 2208, such as a disk, optical disk, etc.; and communication components 2209, such as a network card, modem, wireless transceiver, etc. Communication component 2209 allows device 2200 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks. Computing component 2201 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities.Examples of computing components 2201 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing components running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Computing component 2201 performs the various methods and processes described above, such as signal light processing methods. For example, in some embodiments, signal light processing methods may be implemented as computer software programs tangibly contained in a machine-readable medium, such as storage component 2208. In some embodiments, part or all of the computer program may be loaded and / or installed on device 2200 via ROM 2202 and / or communication component 2209. When the computer program is loaded into RAM 2203 and executed by computing component 2201, one or more steps of the signal light processing method described above can be performed. Alternatively, in other embodiments, computing component 2201 can be configured to perform the signal light processing method by any other suitable means (e.g., by means of firmware). According to another aspect of embodiments of this disclosure, a computer program product is also provided. This computer program product includes a computer program that, when executed by a processor, implements the signal light processing method of the embodiments of this disclosure described above. Program code for implementing the methods of this disclosure can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus such that, when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on a machine, partially on a machine, partially on a machine and partially on a remote machine as a standalone software package, or entirely on a remote machine or server.Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard parts (ASSPs), systems-on-a-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: implementation in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device. Program code for implementing the methods of this disclosure may be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server. In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing.More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a cathode ray tube (CRT) or liquid crystal display (LCD)) for displaying information to the user; a monitor; and a keyboard and pointing device (e.g., a mouse or pathball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input). The systems and techniques described herein can be implemented in computing systems including back-end components (e.g., as a data server), or computing systems including middleware components (e.g., an application server), or computing systems including front-end components (e.g., a user computer with a graphical user interface or web browser through which the user interacts with embodiments of the systems and techniques described herein), or including such back-end components. A computing system may consist of any combination of middleware components or front-end components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include Local Area Networks (LANs), Wide Area Networks (WANs), and the Internet. A computer system may include clients and servers. Clients and servers are generally geographically separated and typically interact via a communication network. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other.The server can be a cloud server, a distributed system server, or a server integrated with blockchain. It should be noted that the sequence numbers of the embodiments in this disclosure are merely descriptive and do not represent the superiority or inferiority of the embodiments. In the above embodiments of this disclosure, the descriptions of each embodiment have different focuses; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. In the several embodiments provided in this disclosure, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of components is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple components or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, or the indirect coupling or communication connection of components may be electrical or other forms. The components described as separate parts may or may not be physically separate. The components shown as components may or may not be physical components; that is, they may be located in one place or distributed across multiple network components. Some or all of the components can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, the functional components in the various embodiments of this disclosure can be integrated into one processing component, or each component can exist physically separately, or two or more components can be integrated into one component. The integrated components can be implemented in hardware or as software functional components. If the integrated components are implemented as software functional components and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods in the various embodiments of this disclosure. The aforementioned storage media include various media capable of storing program code, such as USB flash drives, read-only memory, random access memory, portable hard drives, magnetic disks, or optical disks. The above are merely preferred embodiments of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this disclosure, and these improvements and modifications should also be considered within the scope of protection of this disclosure.This disclosure provides an industrial application for optical transmission systems where optical switches are deployed on the transmission links. An initial sub-transmission link, triggered by the optical switch and in a conducting state, can be identified on the transmission link. Link switching conditions corresponding to the initial sub-transmission link can be determined, representing the conditions under which the optical switch triggers a switching operation on the initial sub-transmission link. Whether the signal light from the optical cable meets the link switching conditions can be detected. If the signal light from the optical cable meets the link switching conditions, the optical switch is controlled to trigger a switching operation on the initial sub-transmission link, resulting in a target sub-transmission link in a conducting state. The signal light on the target sub-transmission link can be output, satisfying the signal light requirements of the optical transmission system. By adding an optical switch to the transmission link of the optical transmission system, rapid switching between the initial sub-transmission link containing the signal light and the branch containing the ASE light source can be achieved. This reduces the fault domain and enables rapid fault recovery, narrowing the fault domain range and improving the processing effect of optical signals, thus solving the problem of poor optical signal processing performance.

Claims

Claims 1. A method for processing signal light, applied to an optical transmission system, wherein an optical switch is deployed on the transmission link of the optical transmission system, the method comprising: On the transmission link, an initial sub-transmission link that is in the conducting state triggered by the optical switch is identified; Determine the link switching conditions corresponding to the initial sub-transmission link, wherein the link switching conditions represent the conditions under which the optical switch triggers a switching operation on the initial sub-transmission link; detect whether the signal light of the optical cable meets the link switching conditions; if the signal light of the optical cable meets the link switching conditions, control the optical switch to trigger a switching operation on the initial sub-transmission link, thereby obtaining a target sub-transmission link in the conducting state; output the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system.

2. The method according to claim 1, wherein, Detecting whether the signal light of the optical cable meets the link switching conditions includes: monitoring the state of the signal light of the optical cable; and determining whether the signal light of the optical cable meets the link switching conditions based on the state of the signal light of the optical cable.

3. The method according to claim 2, wherein, Based on the state of the optical cable's signal light, determining whether the optical cable's signal light meets the link switching conditions includes: In response to the initial sub-transmission link being the main path corresponding to the optical switch, and the optical cable's signal light being in an abnormal state, determining that the optical cable's signal light meets the link switching conditions, wherein the main path is the sub-transmission link on the transmission link where the port used to monitor the optical cable's signal light is located; In response to the initial sub-transmission link being the backup path corresponding to the optical switch, and the optical cable's signal light being in a normal state, determining that the optical cable's signal light meets the link switching conditions, wherein the backup path is the sub-transmission link on the transmission link where the port used to monitor the light source's signal light is located.

4. The method according to claim 3, wherein, In response to the initial sub-transmission link being the main path corresponding to the optical switch, and the signal light state of the optical cable being in an abnormal state, determining that the signal light of the optical cable meets the link switching condition includes: in response to the initial sub-transmission link being the main path of the optical switch, and the signal light state of the light source being in the normal state within a time period, if the signal light state of the optical cable is in the abnormal state within the time period, then determining that the signal light of the optical cable meets the link switching condition.

5. The method according to claim 4, wherein, The method further includes: if the state of the signal light of the optical cable switches from the abnormal state to the normal state within the time period... 47 In the normal state, and / or, if the signal light of the light source switches from the normal state to the abnormal state within the time period, the time period is reset.

6. The method according to claim 4, wherein, The method further includes: if the power of the signal light of the light source is equal to or higher than a first power threshold, then determining that the state of the signal light of the light source is the normal state within the time period.

7. The method according to claim 3, wherein, If the signal light of the optical cable meets the link switching conditions, then the optical switch is controlled to trigger a switching operation on the initial sub-transmission link to obtain a target sub-transmission link in the conducting state. This includes: in response to the initial sub-transmission link being the main path of the optical switch and the signal light of the optical cable meeting the link switching conditions, the optical switch is controlled to trigger a switching operation on the main path in the conducting state to obtain a backup path in the conducting state, wherein the target sub-transmission link includes the backup path.

8. The method according to claim 7, wherein, Outputting the signal light on the target sub-transmission link includes: acquiring the signal light of the light source on the backup line; controlling the optical switch to output the signal light of the light source, wherein the spectrum of the output signal light of the light source is the same as the spectrum of the signal light of the optical cable.

9. The method according to claim 3, wherein, In response to the initial sub-transmission link being a backup path for the optical switch, and the signal light of the optical cable being in a normal state, determining that the signal light of the optical cable meets the link switching conditions includes: in response to the initial sub-transmission link being a backup path for the optical switch, and the signal light of the optical cable being in the normal state within a time period, then determining that the signal light of the optical cable meets the link switching conditions.

10. The method according to claim 9, wherein, The method further includes: if the state of the signal light of the optical cable switches from the normal state to the abnormal state within the time period, then the time period is reset.

11. The method according to claim 3, wherein, If the signal light of the optical cable meets the link switching conditions, then the optical switch is controlled to trigger a switching operation on the initial sub-transmission link to obtain the target sub-transmission link in the conducting state. This includes: in response to the initial sub-transmission link being a backup path for the optical switch and the signal light of the optical cable meeting the link switching conditions, the optical switch is controlled to trigger a switching operation on the backup path in the conducting state to obtain the main path in the conducting state, wherein the target sub-transmission link includes the main path.

12. The method of claim 11, wherein, Outputting the signal light on the target sub-transmission link includes: acquiring the signal light of the optical cable on the main road; 48 The optical switch is controlled to output the signal light of the optical cable.

13. The method according to claim 3, wherein, The method further includes: if the power of the signal light of the optical cable is lower than a second power threshold, then the state of the signal light of the optical cable is determined to be the abnormal state; if the power of the signal light of the optical cable is equal to or higher than the second power threshold, then the state of the signal light of the optical cable is determined to be the normal state.

14. The method according to claim 3, wherein, The method further includes: in response to the optical switch being deployed after the preamplifier of the optical transmission system and before the wavelength selective switch of the optical transmission system, creating a medium channel for the signal light of the optical cable and blocking noise light in non-signal frequency bands, wherein the power of the signal light of the light source after being filtered by the wavelength selective switch of the optical transmission system is the same as the power of the signal light of the optical cable.

15. The method according to claim 3, wherein, The method further includes: in response to the optical switch being deployed before the preamplifier of the optical transmission system, adjusting the power of the signal light of the light source based on the gain value of the preamplifier, wherein the power of the signal light of the light source after adjustment, after being filtered by the wavelength selective switch of the optical transmission system, is the same as the power of the signal light of the optical cable.

16. The method according to claim 3, wherein, The method further includes: adjusting the power of the signal light from the light source based on the gain value of the gain equalizer in response to the optical switch being deployed before the gain equalizer of the optical transmission system; and / or creating a medium channel for the signal light of the optical cable and blocking noise light in non-signal frequency bands; wherein the power of the adjusted signal light from the light source after being filtered by the wavelength selective switch of the optical transmission system is the same as the power of the signal light from the optical cable.

17. The method according to claim 3, wherein, The method further includes: in response to the optical switch being deployed in the gain equalizer of the optical transmission system, creating a medium channel for the signal light of the optical cable and blocking noise light in non-signal frequency bands.

18. The method according to claim 3, wherein, The method further includes: in response to the optical switch being deployed among multiple wavelength selection switches in the optical transmission system, if the state of the signal light of the light source is the abnormal state, switching the signal light of the light source to the signal light of a backup light source.

19. The method according to any one of claims 3 to 18, wherein, The method further includes: controlling a comb filter to filter the signal light from the light source, and / or controlling an optical amplifier to amplify the signal light from the light source.

20. The method according to any one of claims 3 to 18, wherein, The port for monitoring the signal light of the light source set is deployed on the optical switch set, the light source set including the light source, and the optical switch set including the optical switch. 49 The method further includes: if the state of the signal light of the light source is in the abnormal state within a time period, and the state of the signal light of the backup light source other than the light source in the light source group is in the normal state within the time period, then the signal light of the light source is switched to the signal light of the backup light source; and the signal light of the backup light source is output through the port corresponding to the signal light of the light source on the optical switch.

21. The method according to any one of claims 3 to 18, wherein, The port for monitoring the signal light of the optical cable and the port for monitoring the signal light of the light source set are deployed on the optical switch set, the light source set including the light source and the optical switch set including the optical switch. The method further includes: merging the optical signals of the light source set to obtain a merged optical signal; dividing the merged optical signal to obtain multiple sub-optical signals; and determining the sub-optical signals as the signal light on the backup line.

22. A method for processing signal light, applied to an optical transmission system, said optical transmission system being deployed in a data center network on which a cloud platform is established, and said optical transmission system having optical switches deployed on its transmission links, said method comprising: On the transmission link, an initial sub-transmission link that is in the conducting state triggered by the optical switch is identified; The following steps are taken: First, determine the link switching conditions corresponding to the initial sub-transmission link, where the link switching conditions represent the conditions under which the optical switch triggers a switching operation on the initial sub-transmission link. Second, detect whether the signal light of the optical cable meets the link switching conditions. If the signal light of the optical cable meets the link switching conditions, control the optical switch to trigger a switching operation on the initial sub-transmission link, thus obtaining a target sub-transmission link in the conducting state. Third, output the signal light on the target sub-transmission link, where the signal light on the target sub-transmission link meets the signal light requirements of the optical transmission system. Finally, use the signal light to communicate with the cloud platform.

23. An optical transmission system, comprising: The input terminal is used to input the signal light from the optical cable. An optical switch, deployed on the transmission link, is used to trigger a switching operation on an initial sub-transmission link in a conducting state in response to the signal light of the optical cable satisfying the link switching condition, thereby obtaining a target sub-transmission link in the conducting state. The link switching condition represents the condition under which the optical switch triggers the switching operation on the initial sub-transmission link. An output terminal outputs the signal light on the target sub-transmission link, wherein the signal light on the target sub-transmission link satisfies the signal light requirements of the optical transmission system.

24. The system according to claim 23, wherein, The optical switch is deployed on the transmission link in the following positions. 50 Position one: after the preamplifier of the optical transmission system and before the wavelength selection switch of the optical transmission system; position before the preamplifier of the optical transmission system; position before the gain equalizer of the optical transmission system; position within the gain equalizer of the optical transmission system; position among the multiple wavelength selection switches of the optical transmission system.

25. An electronic device, comprising: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 22.

26. A computer-readable storage medium comprising a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the method of any one of claims 1 to 22.

27. A computer program product comprising a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 22.

28. A computer program product, comprising: A computer program that, when executed by a processor, implements the method described in any one of claims 1 to 22.

29. A computer program product, comprising: A non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 22.

30. A computer program that, when executed by a processor, implements the method of any one of claims 1 to 22.

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