Signal sensing method and apparatus

Abstract

This application relates to the field of optical communication technology, and provides a signal sensing method and apparatus. The method includes: dividing an initial optical signal into a sensing optical signal and a reference optical signal; transmitting the sensing optical signal to a second network device via an optical fiber network; receiving a reflected optical signal from the second network device via the optical fiber network, wherein the reflected optical signal is obtained by dividing the sensing optical signal; performing optical path compensation processing on the reflected optical signal based on the reference optical signal, so that the reflected optical signal and the reference optical signal after optical path compensation processing satisfy interference conditions; determining target light intensity information, wherein the target light intensity information is used to describe the light intensity of the interference signal generated by the interference of the reflected optical signal and the reference optical signal; and determining state disturbance information in the optical fiber network based on the target light intensity information. The signal sensing method provided by this application can accurately monitor the physical state of an optical fiber link without interrupting the device's communication services.

Description

Technical Field

[0001] This application relates to the field of optical communication technology, and in particular to a signal sensing method and apparatus. Background Technology

[0002] Slicing Packet Network (SPN) equipment consists of a data plane, a control plane, and a management plane. The data plane includes modules for packet switching, S-wavelength / optical channel cross-connection, operation, management and maintenance, protection, quality of service, and synchronization at the electrical transport layer, as well as modules for coherent optical modules, optical amplifiers, optical add-drop multiplexers, and optical monitoring channels required for wavelength division multiplexing (WDM) optical transmission networking at the optical transport layer. The distributed control plane within the network element includes modules for topology routing, control signaling, and resource management. In the forwarding plane, it connects to other devices using user-network interfaces and network-network interfaces. In the management and control plane, it connects to the network management and control system using out-of-band management interfaces and control interfaces, or connects to other devices through in-band data communication networks via user-network interfaces and network-network interfaces. However, its design focuses on communication performance rather than environmental awareness.

[0003] As a result, SPN equipment cannot perform real-time, uninterrupted intelligent sensing and correlation analysis of the physical state of the fiber optic links carrying services (such as vibration, stress, temperature, etc.), leading to difficulties in fault location and unclear root causes of service quality degradation. Summary of the Invention

[0004] This application provides a signal sensing method and apparatus to solve the technical problem that SPN equipment cannot perform real-time, uninterrupted intelligent sensing and correlation analysis of the physical state (such as vibration, stress, temperature, etc.) of the optical fiber link carrying services, resulting in difficulty in fault location and unclear root causes of service quality degradation.

[0005] In a first aspect, embodiments of this application provide a signal sensing method, executed by a first network device, comprising: The initial optical signal is divided into a sensing optical signal and a reference optical signal; The sensor light signal is transmitted to a second network device via an optical fiber network; The reflected light signal is received from the second network device via the optical fiber network, wherein the reflected light signal is obtained by dividing the sensing light signal; The reflected light signal is optically compensated based on the reference light signal so that the optically compensated reflected light signal and the reference light signal satisfy the interference condition. Determine the target light intensity information, which describes the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal; Based on the target light intensity information, determine the state disturbance information in the optical fiber network.

[0006] In one embodiment, the method further includes: Acquire the initial electrical signal, which is the electrical signal service flow generated simultaneously with the initial optical signal; Based on the target light intensity information, determine the state disturbance information in the fiber optic network, including: Based on the initial electrical signal and target light intensity information, determine the state disturbance information.

[0007] In one embodiment, determining the target light intensity information includes: The first transmission optical path and the first optical intensity information of the reference optical signal are determined, wherein the first transmission optical path is determined by the transmission path of the reference optical signal within the first network device before optical path compensation processing, and the first optical intensity information is the optical intensity of the reference optical signal when it is transmitted to the end of the first transmission optical path. The second transmission optical path and the second optical intensity information of the reflected light signal are determined. The second transmission optical path is determined by the transmission path of the reflected light signal from its generation to before the optical path compensation process. The second optical intensity information is the light intensity of the reflected light signal when it is transmitted to the end of the second transmission optical path. The target light intensity information is determined based on the first transmission optical path, the second transmission optical path, the first light intensity information, and the second light intensity information.

[0008] Secondly, embodiments of this application provide a signal sensing method, executed by a second network device, comprising: Receive the sensing optical signal transmitted by the first network device via the fiber optic network; The sensed light signal is segmented to determine the reflected light signal; The reflected light signal is reflected back to the first network device via the fiber optic network.

[0009] In one embodiment, the method further includes: The sensing optical signal is divided to determine the service optical signal; Based on the aforementioned optical signal, communication services are executed.

[0010] A third method, according to embodiments of this application, provides a first network device, characterized in that the device includes: a sensing plane and a computing plane; The sensing plane is connected to the computing plane. The sensing plane generates an initial optical signal; it divides the initial optical signal into a sensing optical signal and a reference optical signal; the sensing optical signal is transmitted to a second network device; the reflected optical signal reflected back from the second network device is received via an optical fiber network, wherein the reflected optical signal is obtained by dividing the sensing optical signal; optical path compensation processing is performed on the reflected optical signal according to the reference optical signal so that the reflected optical signal and the reference optical signal after optical path compensation processing satisfy the interference condition; target light intensity information is determined, wherein the target light intensity information is used to describe the light intensity change during the interference process of the reflected signal and the reference optical signal; the target light intensity information is transmitted to the computing plane. The computing plane is used to determine the state disturbance information in the fiber optic network based on the target light intensity information.

[0011] In one embodiment, the sensing plane includes: a first optical module, a first beam splitter, a circulator, an optical path compensation module, and an interference module; The first optical module is connected to the first optical splitter. The first optical module is used to generate an initial optical signal and transmit the initial optical signal to the first optical splitter. The first beam splitter is connected to the first port of the circulator and the interference module respectively. The first beam splitter is used to divide the initial optical signal into a sensing optical signal and a reference optical signal, and transmit the sensing optical signal to the circulator and the reference optical signal to the interference module. The second port of the circulator is connected to the optical fiber network, and the third port of the circulator is connected to the optical path compensation module. The circulator is used to transmit the reference optical signal to the optical path compensation module, transmit the sensing optical signal to the second network device via the optical fiber network, and transmit the reflected optical signal received from the second network device to the interference module. The optical path compensation module is connected to the interference module. The optical path compensation module is used to perform optical path compensation processing on the reflected optical signal according to the reference optical signal and transmit the optical path compensation processed reference optical signal to the interference module. The interference module is used to interfere with the reflected light signal and the reference light signal to obtain the interference signal and determine the target light intensity information of the interference signal.

[0012] In one embodiment, the sensing plane is also used for: Acquire the initial electrical signal, which is the electrical signal service flow generated simultaneously with the initial optical signal; The computing plane is also used to determine state perturbation information based on the initial electrical signal and target light intensity information.

[0013] Fourthly, embodiments of this application provide a second network device, characterized in that the device includes: a second beam splitter and a reflective surface; The second beam splitter is connected to the reflective surface. The second beam splitter is used to receive the sensing light signal transmitted by the first network device through the optical fiber network, divide the sensing light signal to determine the reflected light signal, and transmit the reflected light signal to the reflective surface. A reflective surface is used to reflect reflected light signals back to the first network device via the fiber optic network.

[0014] In one embodiment, the sensing plane is further used for: Acquire an initial electrical signal, wherein the initial electrical signal is an electrical signal service flow generated simultaneously with the initial optical signal; The computing power plane is also used to determine the state disturbance information based on the initial electrical signal and the target light intensity information.

[0015] Fifthly, embodiments of this application provide a signal sensing device, comprising: The first partitioning module is used to divide the initial optical signal into a sensing optical signal and a reference optical signal; The first transmission module is used to transmit the sensing optical signal to the second network device via an optical fiber network. The first reflection module is used to receive the reflected light signal reflected back from the second network device via the optical fiber network, wherein the reflected light signal is obtained by dividing the sensing light signal; The processing module is used to perform optical path compensation processing on the reflected light signal according to the reference light signal so that the reflected light signal after optical path compensation processing and the reference light signal satisfy the interference condition. The first determining module is used to determine the target light intensity information, wherein the target light intensity information is used to describe the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal; The second determining module is used to determine the state disturbance information in the optical fiber network based on the target light intensity information.

[0016] In one embodiment, the signal sensing device further includes: The acquisition module is used to acquire the initial electrical signal, which is an electrical signal service flow generated simultaneously with the initial optical signal; The second determining module is specifically used for: Based on the initial electrical signal and target light intensity information, determine the state disturbance information.

[0017] In one embodiment, the first determining module is specifically used for: The first transmission optical path and the first optical intensity information of the reference optical signal are determined, wherein the first transmission optical path is determined by the transmission path of the reference optical signal within the first network device before optical path compensation processing, and the first optical intensity information is the optical intensity of the reference optical signal when it is transmitted to the end of the first transmission optical path. The second transmission optical path and the second optical intensity information of the reflected light signal are determined. The second transmission optical path is determined by the transmission path of the reflected light signal from its generation to before the optical path compensation process. The second optical intensity information is the light intensity of the reflected light signal when it is transmitted to the end of the second transmission optical path. The target light intensity information is determined based on the first transmission optical path, the second transmission optical path, the first light intensity information, and the second light intensity information.

[0018] Sixthly, embodiments of this application provide a signal sensing device, comprising: The receiving module is used to receive the sensing optical signal transmitted by the first network device via the optical fiber network; The second segmentation module is used to segment the sensed light signal to determine the reflected light signal; The second reflection module is used to reflect the reflected light signal back to the first network device via the fiber optic network.

[0019] In a seventh aspect, embodiments of this application provide an electronic device, including a processor and a memory storing a computer program, wherein the processor executes the program to implement the steps of the signal sensing method of the first or second aspect.

[0020] Eighthly, embodiments of this application provide a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the signal sensing method of the first or second aspect.

[0021] Ninthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the steps of the signal sensing method of the first or second aspect.

[0022] The signal sensing method and apparatus provided in this application embodiment divide the initial optical signal into a sensing optical signal and a reference optical signal. The sensing signal is then sent to the second network device via an optical fiber and reflected back to interfere with the reference optical signal. By performing precise optical path compensation on the reflected optical signal, the interference conditions of the two signals are ensured. By detecting changes in the intensity of the interference light, minute changes in the optical path caused by external disturbances such as vibration, temperature, and stress can be sensed with high sensitivity. Combined with the light intensity information, real-time monitoring of the health status of the optical fiber link, early warning of faults, and precise demarcation are achieved. Thus, the physical status of the optical fiber link can be accurately monitored without interrupting the device's communication services.

[0023] The signal sensing method and apparatus provided in this application enable a second network device to receive and process sensor optical signals from a first network device, thereby achieving passive cooperative support for fiber optic link sensing. The second network device requires no complex signal processing or active sensing capabilities; it simply divides the received sensor optical signals and reflects them along the original path to provide a complete round-trip optical path for the first network device. This design allows the second network device to assist in the monitoring of the entire fiber optic link with minimal hardware modifications (mainly adding a reflection device) and zero configuration burden, achieving peer-to-peer sensing cooperation among network devices. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is one of the flowcharts of the signal sensing method provided in the embodiments of this application.

[0026] Figure 2 This is the second flowchart of the signal sensing method provided in the embodiments of this application.

[0027] Figure 3 This is a schematic diagram of the first network device provided in an embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the sensing plane provided in an embodiment of this application.

[0029] Figure 5 This is a schematic diagram of the second network device provided in the embodiments of this application.

[0030] Figure 6 This is one of the schematic diagrams of the signal sensing device provided in the embodiments of this application.

[0031] Figure 7 This is a second schematic diagram of the signal sensing device provided in the embodiments of this application.

[0032] Figure 8 A schematic diagram of the physical structure of an electronic device is provided. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Figure 1 This is one of the flowcharts illustrating the signal sensing method provided in this application, such as... Figure 1 As shown, the method is executed by the first network device, and the method includes the following: Step 101: Divide the initial optical signal into a sensing optical signal and a reference optical signal.

[0035] The first network device can be, for example, an SPN device that initiates the sensing process. The first network device is used to generate probe light signals, send sensing signals, receive reflected signals, and complete interferometric measurements and light intensity information. The second network device can be, for example, an SPN device at the other end. The second network device is responsible for receiving sensing signals, performing simple division on them, and reflecting a portion of the light signals back to the first network device along the original path.

[0036] The initial optical signal is a probe optical signal specifically generated for performing sensing tasks. Unlike the "coherent first optical module" signal that carries the service, it is usually generated by an incoherent light source (such as a broadband light source or a laser of a specific wavelength).

[0037] The sensing optical signal is injected into the fiber optic network to be monitored (i.e., the metropolitan area fiber optic link) as a sensing signal to detect external disturbances. It will carry information about changes in the fiber optic state.

[0038] The reference optical signal is a signal that is kept in a relatively stable path inside the device and is not affected by external interference, serving as a comparison benchmark.

[0039] In this embodiment of the disclosure, the initial optical signal is divided into a sensing optical signal and a reference optical signal. This can be done after the incoherent first optical module generates the initial optical signal, and the beam splitter divides the initial optical signal into a sensing optical signal and a reference optical signal based on a preset division ratio (which can be adaptively set in conjunction with the business requirements in the actual business scenario).

[0040] Step 102: Transmit the sensing optical signal to the second network device via the optical fiber network.

[0041] Among them, the fiber optic network refers to the metropolitan fiber optic infrastructure that connects SPN devices, and is the target object of sensing.

[0042] In this embodiment of the disclosure, the first network device and the second network device are connected based on a fiber optic network.

[0043] Therefore, in this embodiment of the present disclosure, after the first network device divides the initial optical signal into a sensing optical signal and a reference optical signal, it can transmit the sensing optical signal to the second network device via an optical fiber network.

[0044] Step 103: Receive the reflected light signal from the second network device via the optical fiber network, wherein the reflected light signal is obtained by dividing the sensing light signal.

[0045] The reflected optical signal refers to the portion of the optical signal that is reflected back along the original path by a reflecting device (such as a Faraday rotator) after the sensing optical signal reaches the second network device. It has traveled through a round-trip fiber optic link and carries complete link status information.

[0046] In this embodiment of the present disclosure, after the sensing optical signal is transmitted to the second network device, the sensing optical signal can be divided. One part of the divided signal is used as a reflected optical signal, and the other part is used to perform subsequent communication services of the second network device.

[0047] In other words, in this embodiment of the present disclosure, after the first network device transmits the sensing optical signal to the second network device via the optical fiber network, the second network device can divide the sensing optical signal to obtain the reflected optical signal, and return the original transmission link of the reflected optical signal to the first network device based on the reflection device.

[0048] Step 104: Perform optical path compensation processing on the reflected light signal based on the reference light signal so that the reflected light signal after optical path compensation processing and the reference light signal satisfy the interference condition.

[0049] In order for the reference light signal and the reflected light signal to interfere effectively, the optical path of one of the signals needs to be adjusted so that the optical path difference between the two signals is less than the coherence length of the light source.

[0050] For two beams of light to interfere stably, they must meet the interference conditions: the same frequency, the same direction of vibration, and a constant phase difference, etc., but there are no restrictions on these conditions.

[0051] In this embodiment of the disclosure, for example, in order to ensure stable interference between the reflected light signal and the reference light signal, the coherence length between the reflected light signal and the reference light signal needs to be less than 5 mm. In the current case, the optical path difference between the reference light signal and the reflected light signal is 29 m. Therefore, it is necessary to perform optical path compensation processing on the reflected light signal to shorten the optical path difference between it and the reference light signal from 29 m to less than 5 mm. There is no limitation on this.

[0052] Step 105: Determine the target light intensity information, whereby the target light intensity information is used to describe the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal.

[0053] Among them, the target light intensity information is used to describe the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal.

[0054] In some embodiments, determining the target light intensity information may involve interfering the reference light signal and the reflected light information to obtain an interference signal, and then using a high-speed photodetector to measure the interference signal to determine the target light intensity information; alternatively, this may not be limited.

[0055] Optionally, in some embodiments, determining the target light intensity information may involve determining the first transmission optical path and the first light intensity information of the reference optical signal, and determining the second transmission optical path and the second light intensity information of the reflected optical signal; and determining the target light intensity information based on the first transmission optical path, the second transmission optical path, the first light intensity information, and the second light intensity information.

[0056] The first transmission optical path is determined by the transmission path of the reference optical signal within the first network device before optical path compensation processing. Specifically, the first transmission optical path is the product of the transmission path length of the reference optical signal within the first network device and the refractive index.

[0057] The first light intensity information is the light intensity when the reference light signal is transmitted to the end of the first transmission optical path.

[0058] The second transmission optical path is determined by the transmission path of the reflected light signal from its generation to before the optical path compensation process. Specifically, the second transmission optical path is the product of the transmission path length of the reflected light signal from its generation to before the optical path compensation process and the refractive index.

[0059] The second light intensity information is the light intensity when the reflected light signal is transmitted to the end of the second transmission optical path.

[0060] In other words, in this embodiment of the present disclosure, the first transmission optical path and the first optical intensity information of the reference optical signal may be determined, the second transmission optical path and the second optical intensity information of the reflected optical signal may be determined, and then the target optical intensity information may be determined based on the first transmission optical path, the second transmission optical path, the first optical intensity information, and the second optical intensity information. This determination method can be expressed as follows: ; in, For target light intensity information, This is the first light intensity information. For the first transmission optical path, This is the second transmission optical path.

[0061] Step 106: Determine the state disturbance information in the optical fiber network based on the target light intensity information.

[0062] In other words, in this embodiment of the present disclosure, after determining the target light intensity information, the first network device determines the state disturbance information in the optical fiber network based on the target light intensity information.

[0063] Among them, state disturbance information refers to physical environmental changes that cause changes in the transmission characteristics of optical signals in optical fibers, mainly including vibration (such as construction excavation, vehicle passage), temperature changes, stress (such as compression, bending), etc., and there are no restrictions on this.

[0064] In this embodiment of the disclosure, the first network device determines the state disturbance information in the optical fiber network based on the target light intensity information. This can be achieved by downloading and loading an optical signal computing power inference model from a cloud platform. This model is an AI model (such as a convolutional neural network or a long short-term memory network) trained with a large amount of data. The target light intensity information is then input into the optical signal computing power inference model, which infers the target light intensity information to output the state disturbance information.

[0065] Optionally, in some embodiments, the first network device may also acquire an initial electrical signal, wherein the initial electrical signal is an electrical signal service flow generated simultaneously with the initial optical signal.

[0066] The initial electrical signal is an electrical signal service stream generated simultaneously with the initial optical signal. This electrical signal service stream can be, for example, packet count, latency, jitter variation data, etc., and there are no restrictions on it.

[0067] Optionally, in some embodiments, determining the state disturbance information in the optical fiber network based on the target light intensity information may be based on the initial electrical signal and the target light intensity information.

[0068] In other words, in this embodiment of the present disclosure, the first network device may download and load the service-aware computing power model from the cloud platform, and input the initial electrical signal and target light intensity information into the service-aware computing power model to obtain the state disturbance information output by the service-aware computing power model.

[0069] For example, if the business perception computing power model determines that "there is continuous vibration 3km away from point A", and at the same time finds that "the business flow latency jitter from A to B has increased by 20%", then it can accurately locate "this vibration is the root cause of the decline in business quality" and give the conclusion that "the vibration affects the section 3km downstream of point A".

[0070] The signal sensing method provided in this application involves a first network device dividing an initial optical signal into a sensing optical signal and a reference optical signal. The sensing signal is then transmitted to a second network device via optical fiber and reflected back to interfere with the reference optical signal. Precise optical path compensation is performed on the reflected optical signal to ensure that the two signals meet the interference conditions. By detecting changes in the intensity of the interference light, minute changes in the optical path caused by external disturbances such as vibration, temperature, and stress can be sensed with high sensitivity. Combined with the light intensity information, real-time monitoring of the health status of the optical fiber link, early warning of faults, and precise demarcation are achieved. This enables accurate monitoring of the physical status of the optical fiber link without interrupting the device's communication services.

[0071] Figure 2 This is a second schematic flowchart of the signal sensing method provided in the embodiments of this application, as shown below. Figure 2 As shown, the method is executed by the second network device, and the method includes the following: Step 201: Receive the sensing optical signal transmitted by the first network device through the optical fiber network.

[0072] The first network device can be, for example, an SPN device that initiates the sensing process. The first network device is used to generate probe light signals, send sensing signals, receive reflected signals, and complete interferometric measurements and light intensity information. The second network device can be, for example, an SPN device at the other end. The second network device is responsible for receiving sensing signals, performing simple division on them, and reflecting a portion of the light signals back to the first network device along the original path.

[0073] In other words, in this embodiment of the present disclosure, the second network device can receive the sensing optical signal transmitted by the first network device via the optical fiber network.

[0074] Step 202: Divide the sensing light signal to determine the reflected light signal.

[0075] In this embodiment of the disclosure, after receiving the sensing optical signal transmitted by the first network device via the optical fiber network, the second network device can divide the sensing optical signal to determine the reflected optical signal, and use another part of the optical signal obtained from the division of the sensing optical signal for other services of the second network module.

[0076] Step 203: Reflect the reflected light signal back to the first network device via the fiber optic network.

[0077] In this embodiment of the present disclosure, after the second network device divides the sensing light signal to determine the reflected light signal, it can reflect the reflected light signal back to the first network device via the optical fiber network.

[0078] Specifically, reflecting the reflected light signal back to the first network device via the optical fiber network can be achieved by using a reflection device in the second network device to reflect the reflected light signal back to the first network device via the optical fiber network.

[0079] Optionally, in some embodiments, the method further includes: dividing the sensing optical signal to determine a service optical signal; and performing a communication service based on the service optical signal.

[0080] In other words, in this embodiment of the present disclosure, the second network device may divide the sensing optical signal to obtain the reflected optical signal and the service optical signal. After the reflected optical signal is reflected back to the first network device through the optical fiber network, it can be used to help determine the state disturbance information in the optical fiber network. The second network device can perform subsequent communication services based on the service optical signal.

[0081] The signal sensing method provided in this application enables a second network device to passively cooperate in supporting fiber optic link sensing by receiving and processing sensor optical signals from a first network device. The second network device requires no complex signal processing or active sensing capabilities; it simply divides the received sensor optical signals and reflects them back along the original path to provide a complete round-trip optical path for the first network device. This design allows the second network device to assist in full-link fiber optic status monitoring with minimal hardware modifications (mainly adding a reflection device) and zero configuration burden, achieving peer-to-peer sensing cooperation among network devices.

[0082] Figure 3 This is a schematic diagram of the first network device provided in the embodiments of this application, such as... Figure 3 As shown, the first network device includes the following: a sensing plane 301 and a computing plane 302; A sensing plane 301 is connected to a computing plane 302. The sensing plane is used to generate an initial optical signal; divide the initial optical signal into a sensing optical signal and a reference optical signal; transmit the sensing optical signal to a second network device; receive the reflected optical signal reflected back from the second network device via an optical fiber network, wherein the reflected optical signal is obtained by dividing the sensing optical signal; perform optical path compensation processing on the reflected optical signal according to the reference optical signal so that the reflected optical signal and the reference optical signal after optical path compensation processing satisfy the interference condition; determine the target light intensity information, wherein the target light intensity information is used to describe the light intensity change during the interference process of the reflected signal and the reference optical signal; and transmit the target light intensity information to the computing plane. The computing plane 302 is used to determine the state disturbance information in the fiber optic network based on the target light intensity information.

[0083] Optionally, in some embodiments, the sensing plane 301 is further configured to: acquire an initial electrical signal, wherein the initial electrical signal is an electrical signal service flow generated simultaneously with the initial optical signal; The computing plane 302 is also used to determine state disturbance information based on the initial electrical signal and target light intensity information.

[0084] In other words, in this embodiment of the present disclosure, the sensing plane in the first network device can be used to generate an initial optical signal; divide the initial optical signal into a sensing optical signal and a reference optical signal; transmit the sensing optical signal to the second network device; receive the reflected optical signal reflected back from the second network device via an optical fiber network, wherein the reflected optical signal is obtained by dividing the sensing optical signal; perform optical path compensation processing on the reflected optical signal according to the reference optical signal so that the reflected optical signal and the reference optical signal after optical path compensation processing satisfy the interference condition; determine the target light intensity information, wherein the target light intensity information is used to describe the light intensity change during the interference process of the reflected signal and the reference optical signal; and transmit the target light intensity information to the computing plane.

[0085] In this embodiment of the disclosure, after the sensing plane transmits the determined target light intensity information to the computing power plane, the computing power plane can download the optical signal computing power inference model of the cloud platform, input the target light intensity information into the optical signal computing power inference model, and the optical signal computing power inference model infers the target light intensity information to determine the state disturbance information in the optical fiber network.

[0086] In this embodiment of the disclosure, the sensing plane is also used to acquire the initial electrical signal at the same time as the initial optical signal. Thus, the computing power plane can also download the service-aware computing power model of the cloud platform and input the initial electrical signal and the target light intensity information into the service-aware computing power model. The service-aware computing power model combines the initial electrical signal and the target light intensity information to perform inference to determine the state disturbance information in the optical fiber network.

[0087] The first network device provided in this application achieves a deep integration of physical layer sensing and intelligent analysis by separating and coordinating the sensing plane and the computing plane. The sensing plane is specifically responsible for high-precision, real-time optical signal processing and acquisition, ensuring high-sensitivity detection of changes in the physical state of optical fibers. The computing plane uses inference models downloaded from the cloud to perform intelligent analysis of the sensing data. It can not only independently determine the type of disturbance through optical signals, but also achieve cross-layer correlation analysis by combining electrical signal service flow data. This architecture design enables the device to maintain its original communication functions while possessing autonomous, online, and intelligent optical fiber health monitoring capabilities, significantly improving the accuracy of fault location and the efficiency of operation and maintenance response.

[0088] Optionally, in some embodiments, see Figure 4 , Figure 4 This is a schematic diagram of the sensing plane provided in an embodiment of this application. The sensing plane includes: a first optical module 401, a first beam splitter 402, a circulator 403, an optical path compensation module 404, and an interference module 405. The first optical module is connected to the first optical splitter. The first optical module is used to generate an initial optical signal and transmit the initial optical signal to the first optical splitter. The first beam splitter is connected to the first port of the circulator and the interference module respectively. The first beam splitter is used to divide the initial optical signal into a sensing optical signal and a reference optical signal, and transmit the sensing optical signal to the circulator and the reference optical signal to the interference module. The second port of the circulator is connected to the optical fiber network, and the third port of the circulator is connected to the optical path compensation module. The circulator is used to transmit the reference optical signal to the optical path compensation module, transmit the sensing optical signal to the second network device via the optical fiber network, and transmit the reflected optical signal received from the second network device to the interference module. The optical path compensation module is connected to the interference module. The optical path compensation module is used to perform optical path compensation processing on the reflected optical signal according to the reference optical signal and transmit the optical path compensation processed reference optical signal to the interference module. The interference module is used to interfere with the reflected light signal and the reference light signal to obtain the interference signal and determine the target light intensity information of the interference signal.

[0089] In other words, in this embodiment of the present disclosure, the reference light signal and the reflected light signal can interfere in the interference module, thereby determining the light intensity of the reference light signal at port b of the interference module, the light intensity at port a of the interference module, the optical path length of the reference light signal at port a, and the optical path length of the reflected light signal at port b. Then, the target light intensity information can be determined based on the light intensity of the reference light signal at port b of the interference module, the light intensity at port b of the interference module, the optical path length of the reference light signal at port a, and the optical path length of the reflected light signal at port b.

[0090] The sensing plane provided in this application constructs a highly integrated and efficient optical signal processing link through the precise cascading of a first optical module, a beam splitter, a circulator, an optical path compensation module, and an interference module. This architecture utilizes the non-reciprocal property of the circulator to achieve physical isolation and directional transmission of the transmitted sensing signal and the received reflected signal, ensuring signal purity. The first beam splitter achieves precise separation of the reference light and the sensing light, providing a stable reference signal for subsequent interferometric measurements. The introduction of the optical path compensation module intelligently and dynamically adjusts the reflected light path length, ensuring that the two optical signals always meet strict interference conditions in the interference module, thereby guaranteeing the high sensitivity and stability of the sensing system. The overall design achieves complex optical sensing functions while maintaining modularity and compactness, facilitating integration into existing SPN equipment and endowing traditional communication equipment with advanced real-time optical fiber physical state sensing capabilities at a lower cost and complexity.

[0091] Figure 5 This is a schematic diagram of the second network device provided in the embodiments of this application, such as... Figure 5As shown, the second network device includes the following: a second beam splitter 501 and a reflector 502; The second beam splitter 501 is connected to the reflective surface 502. The second beam splitter is used to receive the sensing light signal transmitted by the first network device through the optical fiber network, divide the sensing light signal to determine the reflected light signal, and transmit the reflected light signal to the reflective surface. A reflective surface is used to reflect reflected light signals back to the first network device via the fiber optic network.

[0092] Optionally, in some embodiments, the second network device further includes: a second optical module 503, which is connected to the second optical splitter 501; The second optical splitter is also used to divide the sensing optical signal to determine the service optical signal and transmit the service optical signal to the second optical module; The second optical module is used to perform communication services based on the service optical signal.

[0093] In other words, in this embodiment of the present disclosure, the second optical splitter in the second network device is used to receive the sensing optical signal transmitted by the first network device through the optical fiber network, divide the sensing optical signal to determine the reflected optical signal and the service optical signal, transmit the reflected optical signal to the reflecting surface, and then the reflecting surface can reflect the reflected optical signal back to the first network device through the optical fiber network. The second optical module can perform communication services based on the service optical signal.

[0094] The second network device provided in this application enables efficient and low-cost collaboration for sensing tasks. This architecture allows the second network device to receive, split, and accurately reflect sensing light signals along their original path using only passive optical elements, without requiring complex photoelectric processing capabilities or additional signal sources. This ensures that the reflected signals can stably carry the status information of the fiber optic link.

[0095] The signal sensing device provided in the embodiments of this application is described below. The signal sensing device described below and the signal sensing method described above can be referred to in correspondence.

[0096] Figure 6 This is one of the schematic diagrams of the signal sensing device provided in the embodiments of this application, such as... Figure 6 As shown, the signal sensing device 60 includes the following: The first division module 601 is used to divide the initial optical signal into a sensing optical signal and a reference optical signal; The first transmission module 602 is used to transmit the sensing optical signal to the second network device via an optical fiber network. The first reflection module 603 is used to receive the reflected light signal reflected back by the second network device via the optical fiber network, wherein the reflected light signal is obtained by dividing the sensing light signal; Processing module 604 is used to perform optical path compensation processing on the reflected light signal according to the reference light signal so that the reflected light signal after optical path compensation processing and the reference light signal satisfy the interference condition; The first determining module 605 is used to determine the target light intensity information, wherein the target light intensity information is used to describe the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal; The second determining module 606 is used to determine the state disturbance information in the optical fiber network based on the target light intensity information.

[0097] In one embodiment, the signal sensing device further includes: The acquisition module (not shown in the figure) is used to acquire the initial electrical signal, which is an electrical signal service flow generated simultaneously with the initial optical signal; The second determining module 606 is specifically used for: Based on the initial electrical signal and target light intensity information, determine the state disturbance information.

[0098] In one embodiment, the first determining module 605 is specifically used for: The first transmission optical path and the first optical intensity information of the reference optical signal are determined, wherein the first transmission optical path is determined by the transmission path of the reference optical signal within the first network device before optical path compensation processing, and the first optical intensity information is the optical intensity of the reference optical signal when it is transmitted to the end of the first transmission optical path. The second transmission optical path and the second optical intensity information of the reflected light signal are determined. The second transmission optical path is determined by the transmission path of the reflected light signal from its generation to before the optical path compensation process. The second optical intensity information is the light intensity of the reflected light signal when it is transmitted to the end of the second transmission optical path. The target light intensity information is determined based on the first transmission optical path, the second transmission optical path, the first light intensity information, and the second light intensity information.

[0099] The signal sensing device provided in this application involves a first network device dividing an initial optical signal into a sensing optical signal and a reference optical signal. The sensing signal is then transmitted to a second network device via optical fiber and reflected back to interfere with the reference optical signal. By performing precise optical path compensation on the reflected optical signal, the interference conditions of the two signals are ensured. By detecting changes in the intensity of the interference light, minute changes in the optical path caused by external disturbances such as vibration, temperature, and stress can be sensed with high sensitivity. Combined with the light intensity information, real-time monitoring of the health status of the optical fiber link, early warning of faults, and precise demarcation are achieved. This enables accurate monitoring of the physical status of the optical fiber link without interrupting the device's communication services.

[0100] Figure 7 This is a second schematic diagram of the signal sensing device provided in the embodiments of this application, as shown below. Figure 7As shown, the signal sensing device 70 includes the following: The receiving module 701 is used to receive the sensing optical signal transmitted by the first network device via the optical fiber network; The second division module 702 is used to divide the sensed light signal to determine the reflected light signal; The second reflection module 703 is used to reflect the reflected light signal back to the first network device via the optical fiber network.

[0101] In one embodiment, the signal sensing device 70 further includes: The second segmentation module (not shown in the figure) is used to segment the sensing optical signal to determine the service optical signal; An execution module (not shown in the figure) is used to execute communication services based on the service optical signal.

[0102] The signal sensing device provided in this application enables passive cooperative support for fiber optic link sensing by the second network device receiving and processing sensor optical signals from the first network device. The second network device requires no complex signal processing or active sensing capabilities; it simply divides the received sensor optical signals and reflects them back along the original path to provide a complete round-trip optical path for the first network device. This design allows the second network device to assist in the monitoring of the entire fiber optic link with minimal hardware modifications (mainly adding a reflection device) and zero configuration burden, achieving peer-to-peer sensing cooperation among network devices.

[0103] Figure 8 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 8 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call a computer program in the memory 830 to execute the steps of the signal sensing method, such as including: The initial optical signal is divided into a sensing optical signal and a reference optical signal; The sensor light signal is transmitted to a second network device via an optical fiber network; The reflected light signal is received from the second network device via the optical fiber network, wherein the reflected light signal is obtained by dividing the sensing light signal; The reflected light signal is optically compensated based on the reference light signal so that the optically compensated reflected light signal and the reference light signal satisfy the interference condition. Determine the target light intensity information, which describes the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal; Based on the target light intensity information, determine the state disturbance information in the optical fiber network.

[0104] Alternatively, for example, it may include: receiving a sensing optical signal transmitted by a first network device via an optical fiber network; The sensed light signal is segmented to determine the reflected light signal; The reflected light signal is reflected back to the first network device via the fiber optic network.

[0105] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a 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 of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0106] On the other hand, this application also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can perform the steps of the signal sensing methods provided in the above embodiments, such as: The initial optical signal is divided into a sensing optical signal and a reference optical signal; The sensor light signal is transmitted to a second network device via an optical fiber network; The reflected light signal is received from the second network device via the optical fiber network, wherein the reflected light signal is obtained by dividing the sensing light signal; The reflected light signal is optically compensated based on the reference light signal so that the optically compensated reflected light signal and the reference light signal satisfy the interference condition. Determine the target light intensity information, which describes the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal; Based on the target light intensity information, determine the state disturbance information in the optical fiber network.

[0107] Alternatively, for example, it may include: receiving a sensing optical signal transmitted by a first network device via an optical fiber network; The sensed light signal is segmented to determine the reflected light signal; The reflected light signal is reflected back to the first network device via the fiber optic network.

[0108] On the other hand, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing a processor to perform the steps of the methods provided in the above embodiments, such as including: The initial optical signal is divided into a sensing optical signal and a reference optical signal; The sensor light signal is transmitted to a second network device via an optical fiber network; The reflected light signal is received from the second network device via the optical fiber network, wherein the reflected light signal is obtained by dividing the sensing light signal; The reflected light signal is optically compensated based on the reference light signal so that the optically compensated reflected light signal and the reference light signal satisfy the interference condition. Determine the target light intensity information, which describes the light intensity of the interference signal generated by the interference between the reflected light signal and the reference light signal; Based on the target light intensity information, determine the state disturbance information in the optical fiber network.

[0109] Alternatively, for example, it may include: receiving a sensing optical signal transmitted by a first network device via an optical fiber network; The sensed light signal is segmented to determine the reflected light signal; The reflected light signal is reflected back to the first network device via the fiber optic network.

[0110] Processor-readable storage media can be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0111] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0112] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A signal sensing method, characterized in that, Applied to a first network device, the method includes: The initial optical signal is divided into a sensing optical signal and a reference optical signal; The sensor light signal is transmitted to a second network device via an optical fiber network; The reflected optical signal is received from the second network device via the optical fiber network, wherein the reflected optical signal is obtained by dividing the sensing optical signal; The reflected light signal is subjected to optical path compensation processing based on the reference light signal so that the reflected light signal after optical path compensation processing and the reference light signal satisfy the interference condition. Determine the target light intensity information, wherein the target light intensity information is used to describe the light intensity of the interference signal generated by the interference of the reflected light signal and the reference light signal; Based on the target light intensity information, determine the state disturbance information in the optical fiber network.

2. The method according to claim 1, characterized in that, The method further includes: Acquire an initial electrical signal, wherein the initial electrical signal is an electrical signal service flow generated simultaneously with the initial optical signal; The step of determining the state disturbance information in the optical fiber network based on the target light intensity information includes: The state disturbance information is determined based on the initial electrical signal and the target light intensity information.

3. The method according to claim 1, characterized in that, The determination of target light intensity information includes: The first transmission optical path and the first optical intensity information of the reference optical signal are determined, wherein the first transmission optical path is determined by the transmission path of the reference optical signal within the first network device before optical path compensation processing, and the first optical intensity information is the optical intensity of the reference optical signal when it is transmitted to the end of the first transmission optical path. The second transmission optical path and the second optical intensity information of the reflected optical signal are determined, wherein the second transmission optical path is determined by the transmission path of the reflected optical signal from its generation to before the optical path compensation processing, and the second optical intensity information is the optical intensity of the reflected optical signal when it is transmitted to the end of the second transmission optical path. The target light intensity information is determined based on the first transmission optical path, the second transmission optical path, the first light intensity information, and the second light intensity information.

4. A signal sensing method, characterized in that, Applied to a second network device, the method includes: Receive the sensing optical signal transmitted by the first network device via the fiber optic network; The sensed light signal is divided to determine the reflected light signal; The reflected light signal is reflected back to the first network device via the optical fiber network.

5. The method according to claim 4, characterized in that, The method further includes: The sensing optical signal is divided to determine the service optical signal; Based on the aforementioned optical signal, communication services are executed.

6. A first network device, characterized in that, The device includes: a sensing plane and a computing plane; The sensing plane is connected to the computing plane. The sensing plane is used to generate an initial optical signal; divide the initial optical signal into a sensing optical signal and a reference optical signal; transmit the sensing optical signal to a second network device; receive the reflected optical signal reflected back from the second network device via an optical fiber network, wherein the reflected optical signal is obtained by dividing the sensing optical signal; perform optical path compensation processing on the reflected optical signal according to the reference optical signal so that the optical path compensation processed reflected optical signal and the reference optical signal satisfy the interference condition; determine target light intensity information, wherein the target light intensity information is used to describe the light intensity change during the interference process of the reflected signal and the reference optical signal; and transmit the target light intensity information to the computing plane. The computing plane is used to determine the state disturbance information in the optical fiber network based on the target light intensity information.

7. The device according to claim 6, characterized in that, The sensing plane includes: a first optical module, a first beam splitter, a circulator, an optical path compensation module, and an interference module; The first optical module is connected to the first beam splitter. The first optical module is used to generate an initial optical signal and transmit the initial optical signal to the first beam splitter. The first beam splitter is connected to the first port of the circulator and the interference module respectively. The first beam splitter is used to divide the initial optical signal into a sensing optical signal and a reference optical signal, and transmit the sensing optical signal to the circulator and the reference optical signal to the interference module. The second port of the circulator is connected to the optical fiber network, and the third port of the circulator is connected to the optical path compensation module. The circulator is used to transmit the reference optical signal to the optical path compensation module, transmit the sensing optical signal to the second network device via the optical fiber network, and transmit the reflected optical signal received from the second network device to the interference module. The optical path compensation module is connected to the interference module. The optical path compensation module is used to perform optical path compensation processing on the reflected optical signal according to the reference optical signal, and transmit the optical path compensation processed reference optical signal to the interference module. The interference module is used to interfere with the reflected light signal and the reference light signal to obtain an interference signal and determine the target light intensity information of the interference signal.

8. The device according to claim 6, characterized in that, The sensing plane is also used for: Acquire an initial electrical signal, wherein the initial electrical signal is an electrical signal service flow generated simultaneously with the initial optical signal; The computing power plane is also used to determine the state disturbance information based on the initial electrical signal and the target light intensity information.

9. A second network device, characterized in that, The device includes: a second beam splitter and a reflective surface; The second beam splitter is connected to the reflective surface. The second beam splitter is used to receive the sensing light signal transmitted by the first network device via the optical fiber network, divide the sensing light signal to determine the reflected light signal, and transmit the reflected light signal to the reflective surface. The reflective surface is used to reflect the reflected light signal back to the first network device via the optical fiber network.

10. The device according to claim 9, characterized in that, The device further includes: a second optical module, which is connected to the second beam splitter; The second optical splitter is also used to divide the sensing optical signal to determine the service optical signal and transmit the service optical signal to the second optical module; The second optical module is used to perform communication services based on the service optical signal.

11. A signal sensing device, characterized in that, The device includes: The first partitioning module is used to divide the initial optical signal into a sensing optical signal and a reference optical signal; The first transmission module is used to transmit the sensing optical signal to the second network device via an optical fiber network. A first reflection module is configured to receive a reflected optical signal from the second network device via the optical fiber network, wherein the reflected optical signal is obtained by dividing the sensing optical signal; The processing module is used to perform optical path compensation processing on the reflected optical signal according to the reference optical signal, so that the reflected optical signal after optical path compensation processing and the reference optical signal satisfy the interference condition; The first determining module is used to determine target light intensity information, wherein the target light intensity information is used to describe the light intensity of the interference signal generated by the interference of the reflected light signal and the reference light signal; The second determining module is used to determine the state disturbance information in the optical fiber network based on the target light intensity information.

12. A signal sensing device, characterized in that, The device includes: The receiving module is used to receive the sensing optical signal transmitted by the first network device via the optical fiber network; The second segmentation module is used to segment the sensed light signal to determine the reflected light signal; The second reflection module is used to reflect the reflected light signal back to the first network device via the optical fiber network.

13. An electronic device comprising a processor and a memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the signal sensing method according to any one of claims 1 to 3, or implements the steps of the signal sensing method according to any one of claims 4 to 5.

14. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the signal sensing method according to any one of claims 1 to 3, or the steps of the signal sensing method according to any one of claims 4 to 5.

15. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the signal sensing method according to any one of claims 1 to 3, or the steps of the signal sensing method according to any one of claims 4 to 5.

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