Cable locating method for communication optical cable, and electronic device and computer-readable storage medium

Abstract

The present application belongs to the technical field of communications. Disclosed are a cable locating method for a communication optical cable, and an electronic device and a computer-readable storage medium. The technical solution of the present application comprises: when preset disturbance stress is applied to an optical cable point to be inspected, by means of a Brillouin optical time domain reflectometer correspondingly connected to a target optical cable, dynamically detecting polarization state information of detection light currently transmitted by the target optical cable; and on the basis of the dynamically detected polarization state information, determining whether an optical cable to be identified where said optical cable point is located is the target optical cable.

Description

Communication optical cable tracing method, electronic device and computer-readable storage medium

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202311261861.0 filed on September 27, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a method for finding a communication optical cable, an electronic device, and a computer-readable storage medium. Background Art

[0004] Fiber-optic communication networks are constantly being built and expanded. The sheer number of optical cables presents significant challenges for operations and maintenance. Network upgrades and cutovers, cable fault location, and route verification all require accurate locating of the appropriate optical cables. However, optical cable resource information is manually entered, which is unreliable and results in inaccurate asset management data. Furthermore, due to municipal construction and natural corrosion, cable signage is difficult to identify during cable laying. Furthermore, multiple operators share common ducts and cable wells, resulting in a complex distribution of optical cables within the existing network. Therefore, a high-precision cable locating method is urgently needed.

[0005] Summary of the Invention

[0006] The main purpose of this application is to provide a method for locating a communication optical cable, an electronic device, and a computer-readable storage medium, aiming to solve the technical problem of how to improve the accuracy of locating the optical cable without damaging the optical cable.

[0007] To achieve the above-mentioned objectives, the present application provides a method for finding a communication optical cable, comprising: applying a preset disturbance stress to a point on the optical cable to be detected, dynamically detecting the polarization state information of the detection light currently transmitted by the target optical cable through a Brillouin optical time domain reflectometer connected to the corresponding target optical cable; and determining whether the optical cable to be identified at the point on the optical cable to be detected is the target optical cable based on the dynamically detected polarization state information.

[0008] To achieve the above-mentioned objectives, the present application provides a method for finding a communication optical cable, comprising: applying a preset disturbance stress to a point on the optical cable to be detected, dynamically detecting the polarization state information of the detection light currently transmitted by the target optical cable through a polarization time domain reflectometer connected to the corresponding target optical cable; and determining whether the optical cable to be identified at the point on the optical cable to be detected is the target optical cable based on the dynamically detected polarization state information.

[0009] To achieve the above-mentioned objectives, the present application provides a method for finding a communication optical cable, comprising: while applying a preset disturbance stress to a point on the optical cable to be detected, dynamically detecting the polarization state information of the detection light currently transmitted by the target optical cable through the optical digital signal processing unit of the coherent optical module connected to the target optical cable; and determining whether the optical cable to be identified at the point on the optical cable to be detected is the target optical cable based on the dynamically detected polarization state information.

[0010] In addition, to achieve the above-mentioned purpose, the present application also provides an electronic device, which includes: a memory, a processor, and a communication optical cable finding program stored on the memory and runnable on the processor. When the communication optical cable finding program is executed by the processor, the communication optical cable finding method as described above is implemented.

[0011] In addition, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which a communication optical cable finding program is stored. When the communication optical cable finding program is executed by a processor, the communication optical cable finding method as described above is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0013] In order to more clearly illustrate the technical solutions in this embodiment or the prior art, the following briefly introduces the drawings required for use in the embodiment or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] FIG1 is a flow chart of a first embodiment of a method for finding a communication optical cable according to the present invention;

[0015] FIG2 is a flow chart of a second embodiment of a method for finding a communication optical cable according to the present application;

[0016] FIG3 is a flow chart of a third embodiment of a method for finding a communication optical cable according to the present application;

[0017] FIG4 is a schematic diagram of a cable search process for a communication optical cable in a specific embodiment of the present application;

[0018] FIG5 is a schematic diagram of a cable search scenario for a communication optical cable in the first embodiment of the present application;

[0019] FIG6 is a schematic diagram of a cable tracing scenario for a communication optical cable in the second embodiment of the present application;

[0020] FIG7 is a schematic diagram of a cable tracing scenario for a communication optical cable according to a third embodiment of the present application;

[0021] FIG8 is a schematic diagram of a cable tracing scenario for a communication optical cable in a fourth embodiment of the present application;

[0022] FIG9 is a schematic diagram of a cable search scenario for a communication optical cable in the fifth embodiment of the present application;

[0023] FIG10 is a schematic diagram of a cable tracing scenario for a communication optical cable according to a sixth embodiment of the present application;

[0024] FIG11 is a schematic diagram of an interface for displaying a polarization state dynamic image in a network management application display interface according to an embodiment of the present application;

[0025] FIG12 is a schematic diagram of the device structure of the hardware operating environment involved in the electronic device in this embodiment.

[0026] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] To make the above-mentioned purposes, features, and advantages of the present application more clearly understood, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0028] The sheer number of optical cables presents significant challenges for operations and maintenance. Network upgrades and cutovers, cable fault location, and route verification all require accurate locating of the corresponding optical cables. However, optical cable resource information is manually entered, which is unreliable and results in inaccurate asset management data. Furthermore, due to municipal construction and natural corrosion, optical cable signage is difficult to identify during installation. Furthermore, multiple operators share common ducts and cable wells, resulting in a highly complex distribution of optical cables within the existing network. Consequently, a high-precision cable locating method is urgently needed.

[0029] Cable locating has always been a difficult problem in cable operation and maintenance. Currently, there are two main methods for locating optical cables: the first is to shine a red light on one end of the cable, peel off the cable protective layer at the test point, bend the fiber core, and identify the target cable by observing whether there is red light at the bend. This method has a short detection distance and requires destroying the cable, posing a significant safety hazard to ongoing services, and the accuracy of cable locating is not high. The second method is to shine a light on one end of the cable using an OTDR (Optical Time Domain Reflectometer), bend the cable to a large extent at the test point to create a large attenuation point, and identify the target cable by observing the OTDR detection curve. Although this method has a longer detection distance, it is not very accurate and can cause irreversible damage to the cable, affecting its service life.

[0030] Example 1

[0031] Based on this, referring to FIG. 1 , this embodiment provides a method for finding a communication optical cable, the method comprising:

[0032] Step S100, while applying a preset perturbation stress to the optical cable point to be detected, dynamically detect the polarization state information of the probe light currently transmitted by the target optical cable through a Brillouin optical time-domain reflectometer connected to the target optical cable. In this embodiment, the optical cable point to be detected refers to a preset optical cable detection position on the optical cable to be identified. Those skilled in the art can apply the preset perturbation stress to the optical cable point to be detected using a mechanical tool (e.g., a stress application tool including an optical cable clamp and a vibration generator) or manually. The preset perturbation stress refers to a stress value applied within a preset duration that will produce a preset change.

[0033] Those skilled in the art will recognize that the basic principle of Brillouin optical time-domain reflectometry is that the continuous elastic vibrations of the medium within an optical fiber cause the medium's density to vary periodically over space and time. This periodically modulates the medium's refractive index and propagates at the speed of sound, producing a grating-like effect. When a light wave enters the optical fiber, it is affected by the acoustic field grating, producing a frequency shift related to the speed of sound. This frequency shift varies approximately linearly with changes in the fiber's temperature and strain. In other words, according to the basic principle of optical time-domain reflectometry, as a light pulse propagates along the optical fiber, it continuously generates backward Brillouin scattered light. This backward Brillouin scattered light can be used to locate strain information corresponding to each point along the optical fiber.

[0034] This embodiment can realize rapid measurement of the Brillouin frequency by using the phase demodulation technology of the Brillouin scattered light, and can demodulate the relevant information of the stress on the optical fiber (ie, polarization state information).

[0035] Generally speaking, since the power of the Brillouin scattered light received by the system is very weak and its frequency is close to that of the Rayleigh scattered light, it is necessary to use directional coherent detection technology to extract the Brillouin scattered light.

[0036] Step S200: determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically.

[0037] Those skilled in the art will appreciate that this dynamically detected polarization state information can be used to reflect stress changes at various points along the optical fiber. This is because the refractive index of the optical fiber changes with external stress. When highly coherent light is used for detection, the phase of the reflected light at each point on the optical fiber changes with the stress value. The corresponding reflected light phase change is proportional to the magnitude of the stress change in the optical fiber. Therefore, by detecting the reflected light phase change, it is possible to analyze whether the target optical cable is subjected to a preset disturbance stress. As shown in Figure 11, the polarization state waveform shown in the rectangular box in Figure 11 is the polarization state information generated by the preset disturbance stress.

[0038] Exemplarily, the service light and the detection light transmitted by the target optical cable are in a synaesthesia mode or a non-synaesthesia mode, wherein in the non-synaesthesia mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable.

[0039] This embodiment can be used for cable tracing by deploying Brillouin Optical Time Domain Reflectometer (BOTDR) and other sensing equipment at each site of the optical network. In the synaptic transmission mode, the detection light received and sent by the optical module can be synaptic transmitted with the service light. For standard single-mode optical fiber, synaptic transmission can be achieved through wavelength division multiplexing. For few-mode / multimode optical fiber, synaptic transmission can be achieved through mode division multiplexing. For multi-core optical fiber, synaptic transmission can be achieved through wavelength division multiplexing / core multiplexing. In the non-synaptic transmission mode, the BOTDR needs to be connected to any optical fiber of the target optical cable in the machine room / site.

[0040] In this embodiment, the service light and the detection light transmitted in the target optical cable are in a synaesthesia simultaneous transmission mode or a non-synaesthesia simultaneous transmission mode. In the non-synaesthesia simultaneous transmission mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable. Therefore, in the process of cable locating the target optical cable, the normal transmission of the service light is not affected, and the normal use of the user's business application functions is not affected, thereby improving the robustness of the cable locating method of the communication optical cable in the embodiment of the present application.

[0041] The cable-finding and positioning principle of the communication optical cable provided in the embodiment of the present application is as follows: when the optical cable winding drums in the optical fiber well are entangled with each other and the target optical cable cannot be identified, the preset disturbance stress can be applied based on mechanical tools or manually at the preset optical cable detection position of the optical cable to be identified (i.e., the point position of the optical cable to be detected), and the polarization state information of the detection light currently transmitted by the target optical cable can be dynamically detected through the Brillouin optical time domain reflectometer corresponding to the target optical cable. When the optical cable to be identified is not the target optical cable, the detected polarization state information is equivalent to that caused by the contact point between the optical cable to be identified and the target optical cable. Therefore, when the optical cable to be tested and the target optical cable are not the same optical cable, the detected polarization state information is relatively stable (a certain frequency change will not be generated). When the optical cable to be tested and the target optical cable are the same optical cable, the polarization state information produces a certain frequency deviation change due to the preset disturbance stress on the optical fiber.

[0042] The embodiments of the present application relate to the field of transmission network communications, and in particular to the cable finding and positioning technology of communication optical cables in the OTN (Optical Transport Network) network operation and maintenance phase.

[0043] At the external fiber optic well, when external stress generated by mechanical or artificial means acts on the target optical cable, the Brillouin optical time domain reflectometer (BOTDR) can monitor the changes in polarization state or frequency deviation caused by the changes in external stress. Specifically, when external stress acts on non-target optical cables, the BOTDR connected to the target optical cable cannot detect changes in polarization state or frequency deviation. Furthermore, the BOTDR can locate the position of the target optical cable and report the location information to the asset management and operation system. Based on the multi-point positioning information, the operation and maintenance personnel can determine the consistency of the service route with the planned route and troubleshoot the hidden dangers of route inconsistency in the network.

[0044] The present application proposes a method for finding a communication optical cable, an electronic device, and a computer-readable storage medium. In the method for finding a communication optical cable, the technical solution of an embodiment of the present application is to dynamically detect the polarization state information of the detection light currently transmitted by the target optical cable through a Brillouin optical time domain reflectometer connected to the corresponding target optical cable while applying a preset disturbance stress to the optical cable point to be detected, and then determine whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information.

[0045] Compared with the current optical cable locating method, the embodiment of the present application does not need to strip off the protective layer of the optical cable at the test point (i.e., the optical cable point to be tested) and bend the fiber core, so as not to damage the optical cable. In addition, the present embodiment utilizes the high-precision monitoring mechanism of the Brillouin optical time domain reflectometer (BOTDR) for the detection light, combined with the synaesthesia simultaneous transmission method or the non-synaesthesia simultaneous transmission method, to monitor the polarization state or frequency deviation changes caused by external stress (the external stress can be applied mechanically or manually), so that the embodiment of the present application can find the target optical cable more accurately, thereby improving the accuracy of cable locating and locating the optical cable, facilitating the accurate finding of the target optical cable in a complex existing network environment, and realizing the positioning of the target optical cable. In addition, the multi-point positioning information can be further combined to realize the routing direction identification of the target optical cable, providing accurate optical cable information for fault location, operation and maintenance cutover, etc.

[0046] In one practicable manner, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information includes:

[0047] Step A10, converting the dynamically detected polarization state information into a polarization state dynamic image;

[0048] Step A20: outputting and displaying the polarization state dynamic image through a preset network management application display interface, wherein the polarization state dynamic image is used to indicate whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0049] Those skilled in the art will appreciate that the polarization state information refers to a polarization state signal (e.g., a digital signal) detected by a Brillouin optical time-domain reflectometer. Furthermore, the polarization state dynamic image may refer to a dynamic waveform image corresponding to the dynamically changing polarization state information (since polarization state information often changes in real time, the dynamic waveform image also changes in real time).

[0050] In order to facilitate a more intuitive judgment of whether the optical cable to be identified, which is currently undergoing disturbance stress detection, is the target optical cable, this embodiment converts the dynamically detected polarization state information into a polarization state dynamic image (for example, the polarization state dynamic image includes a real-time detected polarization state image), and then outputs and displays the polarization state dynamic image through a preset network management application display interface, thereby enabling the polarization state dynamic image to be intuitively observed by the human eye and accurately determining whether the optical cable to be identified is the target optical cable.

[0051] In another practicable manner, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information includes:

[0052] Step B10, identifying frequency deviation fluctuation information within a current preset monitoring period based on the dynamically detected polarization state information;

[0053] Step B20: When the frequency deviation change value corresponding to the frequency deviation fluctuation information is greater than a preset threshold, determining that the optical cable to be identified at the optical cable point to be detected is the target optical cable;

[0054] Step B30: When the frequency deviation change value corresponding to the frequency deviation fluctuation information is not greater than a preset threshold, determining that the optical cable to be identified at the optical cable point to be detected is not the target optical cable.

[0055] In this embodiment, the duration of the preset monitoring period is not specifically limited in this embodiment and can be set by those skilled in the art according to actual conditions. Correspondingly, the preset threshold is also not specifically limited in this embodiment and can be set by those skilled in the art according to actual conditions to more accurately and sensitively determine whether the optical cable to be identified is the same as the target optical cable.

[0056] This embodiment identifies frequency deviation fluctuation information within a current preset monitoring period based on the dynamically detected polarization state information. When a frequency deviation change value corresponding to the frequency deviation fluctuation information is greater than a preset threshold, the optical cable to be identified at the optical cable point to be detected is determined to be a target optical cable. When a frequency deviation change value corresponding to the frequency deviation fluctuation information is not greater than the preset threshold, the optical cable to be identified at the optical cable point to be detected is determined not to be a target optical cable, thereby accurately determining whether the optical cable to be identified is the target optical cable.

[0057] In another possible implementation, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information includes:

[0058] Step C10, converting the dynamically detected polarization state information into a polarization state dynamic image;

[0059] Step C20: outputting and displaying the polarization state dynamic image through a preset network management application display interface;

[0060] Step C30 , collecting the polarization state dynamic image displayed on the network management application display interface, and performing image recognition processing on the collected polarization state dynamic image to identify whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0061] In this embodiment, the polarization state dynamic image displayed on the network management application display interface can be captured by a camera, or by an image capture device built into the network management device.

[0062] It is easy to understand that the polarization state dynamic image carries indicative information indicating whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0063] Specifically, as an example, the step of performing image recognition processing on the collected polarization state dynamic image to identify whether the optical cable to be identified at the optical cable point to be detected is the target optical cable includes:

[0064] Step D10, performing image recognition processing on the collected polarization state dynamic image to identify and obtain the actual frequency deviation waveform within the current preset monitoring period;

[0065] Step D20, matching the actual frequency deviation waveform with a preset frequency deviation waveform template;

[0066] Step D30: if the matching rate with the frequency deviation waveform template is greater than a preset ratio threshold, determining the optical cable to be identified at the optical cable point to be detected as the target optical cable;

[0067] Step D40 : If the matching rate with the frequency deviation waveform template is not greater than a preset ratio threshold, it is determined that the optical cable to be identified at the optical cable point to be detected is not the target optical cable.

[0068] In this embodiment, the preset frequency deviation waveform template is calibrated based on applying a preset disturbance stress to the target optical cable in advance and corresponding to the frequency deviation waveform displayed on the network management application display interface.

[0069] The preset ratio threshold is not specifically limited in this embodiment, and those skilled in the art may set it according to actual conditions to more accurately and sensitively determine whether the optical cable to be identified is the target optical cable. For example, the preset ratio threshold may be 90% or 95%.

[0070] As another example, the step of performing image recognition processing on the collected polarization state dynamic image to identify whether the optical cable to be identified at the optical cable point to be detected is the target optical cable includes:

[0071] Step E10: performing image recognition processing on the collected polarization state dynamic image to identify and obtain frequency deviation fluctuation information within the current preset monitoring period;

[0072] Step E20: When the frequency deviation change value corresponding to the frequency deviation fluctuation information is greater than a preset threshold, determining that the optical cable to be identified at the optical cable point to be detected is the target optical cable;

[0073] Step E30 : When the frequency deviation change value corresponding to the frequency deviation fluctuation information is not greater than a preset threshold, determining that the optical cable to be identified at the optical cable point to be detected is not the target optical cable.

[0074] In this embodiment, the preset threshold is not specifically limited in this embodiment, and those skilled in the art can set it according to actual conditions (the preset threshold can be calibrated based on the preset disturbance stress applied to the target optical cable in advance and the frequency deviation change value displayed on the network management application display interface) to more accurately and sensitively determine whether the optical cable to be identified is the target optical cable.

[0075] In one possible implementation, the method further includes:

[0076] Step F10, while sequentially applying a preset disturbance stress to a plurality of different optical cable points to be detected, determining in sequence whether the optical cable to be identified at each of the optical cable points to be detected is the target optical cable based on the polarization state information detected dynamically;

[0077] Step F20, taking the optical cable points to be inspected on the target optical cable as target points, and connecting two adjacent target points among the target points to construct point path information;

[0078] Step F30: determining the planned optical cable direction of the target optical cable according to the point path information.

[0079] This embodiment sequentially applies preset disturbance stress to a plurality of different optical cable points to be detected, and determines whether the optical cable to be identified at each optical cable point to be detected is the target optical cable based on the polarization state information of dynamic detection. The optical cable point to be detected on the target optical cable is used as the target point, and two adjacent target points in each target point are connected by trajectories to construct point path information. Then, based on the point path information, the planned cable direction of the target optical cable is determined. Thus, the embodiment of the present application combines multi-point positioning information to realize the routing direction identification of the target optical cable, which is convenient for providing accurate optical cable information for subsequent fault location, operation and maintenance cutover, etc.

[0080] In one embodiment, after determining the planned optical cable direction of the target optical cable according to the point path information, the method further includes:

[0081] Step G10, obtaining preset service routing planning information, wherein the service routing planning information includes the service routing planning direction of the target optical cable;

[0082] Step G20, identifying whether the planned direction of the optical cable is consistent with the planned direction of the service route according to the service route planning information;

[0083] Step G30: When it is identified that the direction is inconsistent with the service route planning, an alarm prompt message is output.

[0084] The embodiment of the present application obtains preset business routing planning information, which includes the business routing planning direction of the target optical cable. Based on the business routing planning information, it is identified whether the optical cable planning direction is consistent with the business routing planning direction. When it is identified that it is inconsistent with the business routing planning direction, an alarm prompt message is output, thereby realizing the inspection of the physical routing direction of the optical cable through the optical cable position information of the target optical cable reported from multiple locations, and further realizing the provision of accurate optical cable information for fault location, operation and maintenance cutover, etc.

[0085] To help understand the technical principles of the embodiments of the present application, a specific embodiment 1 is listed, including:

[0086] In this application, a Brillouin Optical Time Domain Reflectometer (BOTDR) is used to monitor polarization state and frequency deviation changes with and without mechanical or artificial stress to achieve cable tracing. The entire solution process is shown in Figure 4, and the detailed steps are as follows:

[0087] Step 101: Using a BOTDR to monitor polarization state / frequency deviation changes in a target optical cable under mechanical or artificial stress.

[0088] Step 102: Using a BOTDR to monitor polarization state / frequency deviation changes in the target optical cable without applying mechanical or artificial stress.

[0089] Step 103: Calculate the degree of polarization state / frequency deviation change.

[0090] Step 104: Determine whether it is the target optical cable.

[0091] In one embodiment, stress-related polarization state / frequency deviation changes can be displayed in real time on a network management system interface (i.e., the aforementioned network management application display interface). This real-time display of polarization state / frequency deviation changes can be used to determine whether the target optical cable is a target. In another embodiment, the frequency deviation variation in the polarization state information of the target optical cable can be compared with that in the absence of stress. This frequency deviation variation can then be compared with a threshold. If the frequency deviation variation exceeds the threshold, the target optical cable is determined to be a target optical cable.

[0092] Please refer to Figure 5, which is a schematic diagram of the cable-finding scenario for communication optical cables in the first embodiment of the present application. Among them, a BOTDR is deployed at the sending site, and the interface is used to display in real time to determine whether it is the target optical cable. Under the synesthesia method, for standard single-mode optical fibers, BOTDR can achieve synesthesia through wavelength division multiplexing. For few-mode / multimode optical fibers, synesthesia can be achieved through mode division multiplexing. For multi-core optical fibers, synesthesia can be achieved through wavelength division multiplexing / core multiplexing. Under non-synesthesia, BOTDR needs to occupy a separate optical fiber. BOTDR monitors the frequency deviation changes when mechanical or artificial stress is applied / not applied, and displays it in real time on the network management / user function interface. By observing the level of change on the interface, it can be determined whether it is the target optical cable.

[0093] Please refer to Figure 6, which is a schematic diagram of the cable-finding scenario for communication optical cables in the second embodiment of the present application. Among them, a BOTDR is deployed at the sending site, and a threshold method is used to determine whether it is the target optical cable. Under the synesthesia method, for standard single-mode optical fibers, BOTDR can achieve synesthesia through wavelength division multiplexing. For few-mode / multimode optical fibers, synesthesia can be achieved through mode division multiplexing. For multi-core optical fibers, synesthesia can be achieved through wavelength division multiplexing / core multiplexing. Under the non-synesthesia method, the BOTDR needs to occupy a separate optical fiber. The BOTDR monitors the frequency deviation changes when mechanical or artificial stress is applied / not applied, and compares the frequency deviation change degree with a preset threshold by calculating the polarization state / frequency deviation change degree. When it is greater than the threshold, it is determined to be the target optical cable.

[0094] In this embodiment, if it is described that an optical cable is found by applying external stress to the target optical cable, and the polarization state and frequency deviation changes of the target optical cable are displayed on the user function interface, a schematic diagram is shown in Figure 11. The polarization state waveform shown in the rectangular box in Figure 11 is the polarization state information generated by the preset disturbance stress.

[0095] During normal network operation, operations and maintenance personnel can use the method described in this specific embodiment to accurately locate and locate the target optical cable in a complex live network environment. Based on multi-point positioning information, they can also identify the optical cable routing, providing accurate optical cable information for fault location, operation and maintenance cutover, etc. This specific embodiment can also inspect the physical routing of optical cables using optical cable location information reported from multiple locations.

[0096] The many details described in this specific embodiment are only helpful for understanding the technical concept of the present application and do not constitute a limitation of the present application. More simple transformations based on the technical concept of the present application should all fall within the scope of protection of the present application.

[0097] Example 2

[0098] Based on the first embodiment of the present application, in another embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction and will not be repeated hereafter. On this basis, please refer to FIG2 , this embodiment also provides a method for finding a communication optical cable, the method comprising:

[0099] Step S300, dynamically detecting polarization state information of the probe light currently transmitted by the target optical cable by using a polarization time domain reflectometer connected to the target optical cable while applying a preset disturbance stress to the optical cable point to be detected;

[0100] In this embodiment, the optical cable point to be inspected refers to a preset optical cable inspection position on the optical cable to be identified. A person skilled in the art can apply a preset disturbance stress to the optical cable point to be inspected using a mechanical tool (e.g., a stress application tool including an optical cable clamp and a vibration generator) or manually. The preset disturbance stress refers to a stress value applied within a preset duration that will produce a preset change.

[0101] In this embodiment, the Polarization Optical Time Domain Reflectometer (POTDR) is a fully distributed fiber optic sensor based on optical time domain reflectometry. It detects changes in the polarization state of scattered light waves in an optical fiber. It offers high sensitivity, a low false alarm rate, and the ability to measure and locate disturbances at any location along the fiber.

[0102] The light source of a polarization time-domain reflectometer uses a broadband laser with a wavelength of approximately 0.1 nanometers to generate polarized light pulses. Its specific operating principle is that the backscattered Rayleigh signal is affected by local polarization state variations. If a disturbance occurs at a certain location on the sensing fiber, the original polarization state will be modulated. A POTDR can monitor the spatial distribution of the fiber's polarization properties, which can be modulated by pressure, strain, temperature, and electric and magnetic fields. Because the polarization state of a light pulse changes briefly over time, a polarization time-domain reflectometer can be used to dynamically measure disturbance signals.

[0103] Step S400: determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically.

[0104] Those skilled in the art will appreciate that this dynamically detected polarization state information can be used to reflect stress changes at various points along the optical fiber. This is because the refractive index of the optical fiber changes with external stress. When highly coherent light is used for detection, the phase of the reflected light at each point on the optical fiber changes with the stress value. The corresponding reflected light phase change is proportional to the magnitude of the stress change in the optical fiber. Therefore, by detecting the reflected light phase change, it is possible to analyze whether the target optical cable is subjected to a preset disturbance stress. As shown in Figure 11, the polarization state waveform shown in the rectangular box in Figure 11 is the polarization state information generated by the preset disturbance stress.

[0105] Exemplarily, the service light and the detection light transmitted by the target optical cable are in a synaesthesia mode or a non-synaesthesia mode, wherein in the non-synaesthesia mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable.

[0106] This embodiment can be used for cable tracing by deploying sensing equipment such as polarization time domain reflectometers (POTDR) at each site in the optical network. In the synaptic transmission mode, the detection light received and sent by the optical module can be synaptic transmitted with the service light. For standard single-mode optical fiber, synaptic transmission can be achieved through wavelength division multiplexing. For few-mode / multimode optical fiber, synaptic transmission can be achieved through mode division multiplexing. For multi-core optical fiber, synaptic transmission can be achieved through wavelength division multiplexing / core multiplexing. In the non-synaptic transmission mode, the POTDR needs to be connected to any optical fiber of the target optical cable in the computer room / site.

[0107] In this embodiment, the service light and the detection light transmitted in the target optical cable are in a synaesthesia simultaneous transmission mode or a non-synaesthesia simultaneous transmission mode. In the non-synaesthesia simultaneous transmission mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable. Therefore, in the process of cable locating the target optical cable, the normal transmission of the service light is not affected, and the normal use of the user's business application functions is not affected, thereby improving the robustness of the cable locating method of the communication optical cable in the embodiment of the present application.

[0108] The cable-finding and positioning principle of the communication optical cable provided in the embodiment of the present application is as follows: when the optical cable winding drums in the optical fiber well are entangled with each other and the target optical cable cannot be identified, a preset disturbance stress can be applied based on mechanical tools or manually at the preset optical cable detection position of the optical cable to be identified (i.e., the point position of the optical cable to be detected), and the polarization state information of the detection light currently transmitted by the target optical cable can be dynamically detected through the polarization light time domain reflectometer corresponding to the target optical cable. When the optical cable to be identified is not the target optical cable, the detected polarization state information is equivalent to that caused by the contact point between the optical cable to be identified and the target optical cable. Therefore, when the optical cable to be tested and the target optical cable are not the same optical cable, the detected polarization state information is relatively stable (a certain frequency change will not be generated). When the optical cable to be tested and the target optical cable are the same optical cable, the polarization state information will produce a certain frequency deviation change due to the preset disturbance stress on the optical fiber.

[0109] The embodiments of the present application relate to the field of transmission network communications, and in particular to the cable finding and positioning technology of communication optical cables in the OTN (Optical Transport Network) network operation and maintenance phase.

[0110] At an external fiber optic well, when mechanically or manually generated external stress acts on the target optical cable, the POTDR can monitor changes in polarization state or frequency deviation caused by these stress changes. Specifically, when external stress acts on a non-target optical cable, the POTDR connected to the target optical cable cannot detect changes in polarization state or frequency deviation. Furthermore, the POTDR can locate the position of the target optical cable and report this location information to the asset management and operation system. Based on this multi-point positioning information, operation and maintenance personnel can determine the consistency of the service route with the planned route and troubleshoot potential routing inconsistencies in the network.

[0111] The present application proposes a method for finding a communication optical cable, an electronic device, and a computer-readable storage medium. In the method for finding a communication optical cable, the technical solution of an embodiment of the present application is to dynamically detect the polarization state information of the detection light currently transmitted by the target optical cable through a polarization time domain reflectometer connected to the corresponding target optical cable while applying a preset disturbance stress to the optical cable point to be detected, and then determine whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information.

[0112] Compared with the current optical cable locating method, the embodiment of the present application does not need to strip off the protective layer of the optical cable at the test point (i.e., the optical cable point to be tested) and bend the fiber core, so as not to damage the optical cable. In addition, the present embodiment uses the high-precision monitoring mechanism of polarized light for detection light, combined with the synaesthesia simultaneous transmission method or the non-synaesthesia simultaneous transmission method to monitor the polarization state or frequency deviation changes caused by external stress (the external stress can be applied mechanically or manually), so that the embodiment of the present application can find the target optical cable more accurately, thereby improving the accuracy of cable locating and locating the optical cable, facilitating the accurate finding of the target optical cable in a complex existing network environment, and realizing the positioning of the target optical cable. It can further combine multi-point positioning information to realize the route direction identification of the target optical cable, and provide accurate optical cable information for fault location, operation and maintenance cutover, etc.

[0113] In some embodiments, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically includes: converting the polarization state information detected dynamically into a polarization state dynamic image; outputting and displaying the polarization state dynamic image through a preset network management application display interface, wherein the polarization state dynamic image is used to indicate whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0114] Those skilled in the art will appreciate that the polarization state information refers to a polarization state signal detected by a polarization time domain reflectometer.

[0115] In some embodiments, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically includes: identifying the frequency deviation fluctuation information within the current preset monitoring period based on the polarization state information detected dynamically; determining that the optical cable to be identified at the optical cable point to be detected is the target optical cable when the frequency deviation change value corresponding to the frequency deviation fluctuation information is greater than a preset threshold; and determining that the optical cable to be identified at the optical cable point to be detected is not the target optical cable when the frequency deviation change value corresponding to the frequency deviation fluctuation information is not greater than the preset threshold.

[0116] In some embodiments, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically includes: converting the polarization state information detected dynamically into a polarization state dynamic image; outputting and displaying the polarization state dynamic image through a preset network management application display interface; collecting the polarization state dynamic image displayed on the network management application display interface, and performing image recognition processing on the collected polarization state dynamic image to identify whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0117] In some embodiments, the method further includes: while applying preset disturbance stress to a plurality of different optical cable points to be detected in sequence, determining in sequence whether the optical cable to be identified at each of the optical cable points to be detected is the target optical cable based on the polarization state information detected dynamically; taking the optical cable point to be detected on the target optical cable as the target point, and connecting two adjacent target points among the target points by trajectories to construct point path information; and determining the planned cable direction of the target optical cable based on the point path information.

[0118] In some embodiments, after determining the planned optical cable direction of the target optical cable based on the point path information, it also includes: obtaining preset business routing planning information, the business routing planning information including the business routing planning direction of the target optical cable; according to the business routing planning information, identifying whether the planned optical cable direction is consistent with the business routing planning direction; and outputting an alarm prompt message when it is identified that it is inconsistent with the business routing planning direction.

[0119] In some embodiments, the service light and the detection light transmitted by the target optical cable are in a synaesthesia mode or a non-synaesthesia mode, wherein in the non-synaesthesia mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable.

[0120] The method for finding a communication optical cable provided in the embodiment of the present application adopts the same or similar technical features as the above-mentioned embodiment 1, and can solve the technical problem of how to improve the accuracy of finding and locating the optical cable without damaging the optical cable. Compared with the prior art, the beneficial effects of the cable-finding device for a communication optical cable provided in the embodiment of the present application are the same as the beneficial effects of the cable-finding method for a communication optical cable provided in the above-mentioned embodiment 1, and the other technical features of the cable-finding method for a communication optical cable are the same as the features disclosed in the above-mentioned embodiment method 1, and are not described in detail here.

[0121] To help understand the technical principles of the embodiments of this application, a specific embodiment 2 is listed, including:

[0122] In this application, a polarization optical time domain reflectometer (POTDR) is used to monitor the polarization state and frequency deviation changes with and without mechanical or artificial stress to achieve cable tracing. The entire solution process is shown in Figure 4, and the detailed steps are as follows:

[0123] Step 101: Using a POTDR to monitor polarization state / frequency deviation changes in a target optical cable under mechanical or artificial stress.

[0124] Step 102: Using a POTDR to monitor polarization state / frequency deviation changes in the target optical cable without applying mechanical or artificial stress.

[0125] Step 103: Calculate the degree of polarization state / frequency deviation change.

[0126] Step 104: Determine whether it is the target optical cable.

[0127] In one embodiment, stress-related polarization state / frequency deviation changes can be displayed in real time on a network management system interface (i.e., the aforementioned network management application display interface). This real-time display of polarization state / frequency deviation changes can be used to determine whether the target optical cable is a target. In another embodiment, the frequency deviation variation in the polarization state information of the target optical cable can be compared with that in the absence of stress. This frequency deviation variation can then be compared with a threshold. If the frequency deviation variation exceeds the threshold, the target optical cable is determined to be a target optical cable.

[0128] Please refer to Figure 7, which is a schematic diagram of the cable-finding scenario of the communication optical cable in the third embodiment of the present application. Among them, the interface is used to display in real time to determine whether it is the target optical cable. Under the synesthesia method, for standard single-mode optical fiber, POTDR can achieve synesthesia through wavelength division multiplexing. For few-mode / multimode optical fiber, synesthesia can be achieved through mode division multiplexing. For multi-core optical fiber, synesthesia can be achieved through wavelength division multiplexing / core multiplexing. Under the non-synesthesia mode, POTDR needs to occupy a separate optical fiber. BOTDR monitors the changes in polarization state when mechanical or artificial stress is applied / not applied, and displays it in real time on the network management / user function interface. By observing the level of change on the interface, it can be determined whether it is the target optical cable.

[0129] Please refer to Figure 8, which is a schematic diagram of the cable-finding scenario of the communication optical cable in the fourth embodiment of the present application. Among them, POTDR is deployed at the sending site, and the threshold method is used to determine whether it is the target optical cable. Under the synesthesia method, for standard single-mode optical fiber, POTDR can achieve synesthesia through wavelength division multiplexing. For few-mode / multimode optical fiber, synesthesia can be achieved through mode division multiplexing. For multi-core optical fiber, synesthesia can be achieved through wavelength division multiplexing / core multiplexing. Under the non-synesthesia method, POTDR needs to occupy a separate optical fiber. POTDR monitors the change in polarization state when mechanical or artificial stress is applied / not applied, and compares the degree of change in polarization state / frequency deviation with a preset threshold by calculating the degree of change. When it is greater than the threshold, it is determined to be the target optical cable.

[0130] In this embodiment, if it is described that an optical cable is found by applying external stress to the target optical cable, and the polarization state and frequency deviation changes of the target optical cable are displayed on the user function interface, a schematic diagram is shown in Figure 11. The polarization state waveform shown in the rectangular box in Figure 11 is the polarization state information generated by the preset disturbance stress.

[0131] During normal network operation, operations and maintenance personnel can use the method described in this specific embodiment to accurately locate and locate the target optical cable in a complex live network environment. Based on multi-point positioning information, they can also identify the optical cable routing, providing accurate optical cable information for fault location, operation and maintenance cutover, etc. This specific embodiment can also inspect the physical routing of optical cables using optical cable location information reported from multiple locations.

[0132] The many details described in the second specific embodiment are only helpful for understanding the technical concept of the present application and do not constitute a limitation of the present application. More simple transformations based on the technical concept of the present application should all be within the scope of protection of the present application.

[0133] Example 3

[0134] Based on the first embodiment of the present application, in another embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction and will not be repeated hereafter. On this basis, please refer to FIG3 , this embodiment also provides a method for finding a communication optical cable, the method comprising:

[0135] Step S500, dynamically detecting polarization state information of the probe light currently transmitted by the target optical cable through the optical digital signal processing unit of the coherent optical module connected to the target optical cable while applying a preset disturbance stress to the point of the optical cable to be detected;

[0136] In this embodiment, the optical cable point to be inspected refers to a preset optical cable inspection position on the optical cable to be identified. A person skilled in the art can apply a preset disturbance stress to the optical cable point to be inspected using a mechanical tool (e.g., a stress application tool including an optical cable clamp and a vibration generator) or manually. The preset disturbance stress refers to a stress value applied within a preset duration that will produce a preset change.

[0137] Step S600: Determine whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically.

[0138] Those skilled in the art will appreciate that this dynamically detected polarization state information can be used to reflect stress changes at various points along the optical fiber. This is because the refractive index of the optical fiber changes with external stress. When highly coherent light is used for detection, the phase of the reflected light at each point on the optical fiber changes with the stress value. The corresponding reflected light phase change is proportional to the magnitude of the stress change in the optical fiber. Therefore, by detecting the reflected light phase change, it is possible to analyze whether the target optical cable is subjected to a preset disturbance stress. As shown in Figure 11, the polarization state waveform shown in the rectangular box in Figure 11 is the polarization state information generated by the preset disturbance stress.

[0139] Exemplarily, the service light and the detection light transmitted by the target optical cable are in a synaesthesia mode or a non-synaesthesia mode, wherein in the non-synaesthesia mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable.

[0140] This embodiment can be used for cable tracing by utilizing the optical digital signal processing (oDSP) of the coherent optical modules at each station in the optical network. In this method, the detection light received and transmitted by the optical module can be transmitted simultaneously with the service light. For standard single-mode fiber, this can be achieved through wavelength division multiplexing. For few-mode / multimode fiber, this can be achieved through mode division multiplexing. For multi-core fiber, this can be achieved through wavelength division multiplexing / core multiplexing.

[0141] In this embodiment, the service light and the detection light transmitted in the target optical cable are in a synaesthesia simultaneous transmission mode or a non-synaesthesia simultaneous transmission mode. In the non-synaesthesia simultaneous transmission mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable. Therefore, in the process of cable locating the target optical cable, the normal transmission of the service light is not affected, and the normal use of the user's business application functions is not affected, thereby improving the robustness of the cable locating method of the communication optical cable in the embodiment of the present application.

[0142] The cable-finding and positioning principle of the communication optical cable provided in the embodiment of the present application is as follows: when the optical cable winding drums in the optical fiber well are entangled with each other and the target optical cable cannot be identified, the preset disturbance stress can be applied based on mechanical tools or manually at the preset optical cable detection position of the optical cable to be identified (i.e., the point position of the optical cable to be detected), and the polarization state information of the detection light currently transmitted by the target optical cable can be dynamically detected through the optical digital signal processing unit of the coherent optical module connected to the target optical cable. When the optical cable to be identified is not the target optical cable, the detected polarization state information is equivalent to that caused by the contact point between the optical cable to be identified and the target optical cable. Therefore, when the optical cable to be tested and the target optical cable are not the same optical cable, the detected polarization state information is relatively stable (a certain frequency change will not be generated). When the optical cable to be tested and the target optical cable are the same optical cable, the polarization state information produces a certain frequency deviation change due to the preset disturbance stress on the optical fiber.

[0143] The embodiments of the present application relate to the field of transmission network communications, and in particular to the cable finding and positioning technology of communication optical cables in the OTN (Optical Transport Network) network operation and maintenance phase.

[0144] At the external fiber optic well, when external stress generated by mechanical or artificial means acts on the target optical cable, the optical digital signal processing unit (oDSP) of the coherent optical module can monitor the changes in polarization state or frequency deviation caused by the changes in external stress. Specifically, when external stress acts on non-target optical cables, the oDSP connected to the target optical cable cannot monitor the changes in polarization state or frequency deviation. Furthermore, the oDSP can locate the position of the target optical cable and report the location information to the asset management and operation system. Based on the multi-point positioning information, the operation and maintenance personnel can determine the consistency of the service route with the planned route and troubleshoot the hidden dangers of route inconsistency in the network.

[0145] The present application proposes a method for finding a communication optical cable, an electronic device, and a computer-readable storage medium. In the method for finding a communication optical cable, the technical solution of an embodiment of the present application is to dynamically detect the polarization state information of the detection light currently transmitted by the target optical cable through the optical digital signal processing unit of the coherent optical module connected to the target optical cable while applying a preset disturbance stress to the optical cable point to be detected, and then determine whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information.

[0146] Compared with the current optical cable locating method, the embodiment of the present application does not need to strip off the protective layer of the optical cable at the test point (i.e., the optical cable point to be tested) and bend the fiber core, so as not to damage the optical cable. In addition, the present embodiment utilizes the high-precision monitoring mechanism of the optical digital signal processing unit (oDSP) for the detection light, combined with the synaesthesia simultaneous transmission method or the non-synaesthesia simultaneous transmission method, to monitor the polarization state or frequency deviation changes caused by external stress (the external stress can be applied mechanically or manually), so that the embodiment of the present application can find the target optical cable more accurately, thereby improving the accuracy of cable locating and locating the optical cable, facilitating the accurate finding of the target optical cable in a complex existing network environment, and realizing the positioning of the target optical cable. In addition, the multi-point positioning information can be further combined to realize the route identification of the target optical cable, providing accurate optical cable information for fault location, operation and maintenance cutover, etc.

[0147] In some embodiments, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically includes: converting the polarization state information detected dynamically into a polarization state dynamic image; outputting and displaying the polarization state dynamic image through a preset network management application display interface, wherein the polarization state dynamic image is used to indicate whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0148] Those skilled in the art will appreciate that the polarization state information refers to a polarization state signal detected by an optical digital signal processing unit (oDSP).

[0149] In some embodiments, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically includes: identifying the frequency deviation fluctuation information within the current preset monitoring period based on the polarization state information detected dynamically; determining that the optical cable to be identified at the optical cable point to be detected is the target optical cable when the frequency deviation change value corresponding to the frequency deviation fluctuation information is greater than a preset threshold; and determining that the optical cable to be identified at the optical cable point to be detected is not the target optical cable when the frequency deviation change value corresponding to the frequency deviation fluctuation information is not greater than the preset threshold.

[0150] In some embodiments, the step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the polarization state information detected dynamically includes: converting the polarization state information detected dynamically into a polarization state dynamic image; outputting and displaying the polarization state dynamic image through a preset network management application display interface; collecting the polarization state dynamic image displayed on the network management application display interface, and performing image recognition processing on the collected polarization state dynamic image to identify whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0151] In some embodiments, the method further includes: while applying preset disturbance stress to a plurality of different optical cable points to be detected in sequence, determining in sequence whether the optical cable to be identified at each of the optical cable points to be detected is the target optical cable based on the polarization state information detected dynamically; taking the optical cable point to be detected on the target optical cable as the target point, and connecting two adjacent target points among the target points by trajectories to construct point path information; and determining the planned cable direction of the target optical cable based on the point path information.

[0152] In some embodiments, after determining the planned optical cable direction of the target optical cable based on the point path information, it also includes: obtaining preset business routing planning information, the business routing planning information including the business routing planning direction of the target optical cable; according to the business routing planning information, identifying whether the planned optical cable direction is consistent with the business routing planning direction; and outputting an alarm prompt message when it is identified that it is inconsistent with the business routing planning direction.

[0153] In some embodiments, the service light and the detection light transmitted by the target optical cable are in a synaesthesia mode or a non-synaesthesia mode, wherein in the non-synaesthesia mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable.

[0154] The method for finding a communication optical cable provided in the embodiment of the present application adopts the same or similar technical features as the above-mentioned embodiment 1, and can solve the technical problem of how to improve the accuracy of finding and locating the optical cable without damaging the optical cable. Compared with the prior art, the beneficial effects of the cable-finding device for a communication optical cable provided in the embodiment of the present application are the same as the beneficial effects of the cable-finding method for a communication optical cable provided in the above-mentioned embodiment 1, and the other technical features of the cable-finding method for a communication optical cable are the same as the features disclosed in the above-mentioned embodiment method 1, and are not described in detail here.

[0155] To help understand the technical principles of the embodiments of this application, a specific embodiment 3 is listed, including:

[0156] In this application, the optical digital signal processing unit (oDSP) of the coherent optical module is used to monitor the polarization state and frequency deviation changes with or without mechanical or artificial stress to achieve cable detection. The entire solution process is shown in Figure 4, and the detailed steps are as follows:

[0157] Step 101: Under the condition of applying mechanical or artificial stress, use the coherent optical module oDSP to monitor the polarization state / frequency deviation change in the target optical cable.

[0158] Step 102: Using a coherent optical module oDSP to monitor polarization state / frequency deviation changes in a target optical cable without applying mechanical or artificial stress.

[0159] Step 103: Calculate the degree of polarization state / frequency deviation change.

[0160] Step 104: Determine whether it is the target optical cable.

[0161] In one embodiment, stress-related polarization state / frequency deviation changes can be displayed in real time on a network management system interface (i.e., the aforementioned network management application display interface). This real-time display of polarization state / frequency deviation changes can be used to determine whether the target optical cable is a target. In another embodiment, the frequency deviation variation in the polarization state information of the target optical cable can be compared with that in the absence of stress. This frequency deviation variation can then be compared with a threshold. If the frequency deviation variation exceeds the threshold, the target optical cable is determined to be a target optical cable.

[0162] Please refer to Figure 9, which is a schematic diagram of the cable-finding scenario for communication optical cables in the fifth embodiment of the present application. Among them, an interface is used to display in real time whether it is the target optical cable. Since the coherent optical module is the basic component unit of the optical network, the service optical module can be used directly to find the cable, which can achieve inter-sensory integration. The oDSP in the coherent optical module is used at the receiving site to monitor the changes in the polarization state frequency deviation of the target optical cable when mechanical or artificial stress is applied / not applied, and it is displayed in real time on the network management / user function interface. By observing the level of change on the interface, it can be determined whether it is the target optical cable.

[0163] Please refer to Figure 10, which is a schematic diagram of the cable-finding scenario for communication optical cables in the sixth embodiment of the present application. A threshold method is used to determine whether the target optical cable is present. Since the coherent optical module is a basic component of the optical network, a service optical module can be used for cable-finding, which can achieve interoception. The oDSP in the coherent optical module is used at the receiving site to monitor the polarization state and frequency deviation changes of the target optical cable when mechanical or artificial stress is applied or not, and the threshold method is used to determine that when the degree of change is greater than the threshold, it is the target optical cable.

[0164] In this embodiment, if it is described that an optical cable is found by applying external stress to the target optical cable, and the polarization state and frequency deviation changes of the target optical cable are displayed on the user function interface, a schematic diagram is shown in Figure 11. The polarization state waveform shown in the rectangular box in Figure 11 is the polarization state information generated by the preset disturbance stress.

[0165] During normal network operation, operations and maintenance personnel can use the method described in this specific embodiment to accurately locate and locate the target optical cable in a complex live network environment. Based on multi-point positioning information, they can also identify the optical cable routing, providing accurate optical cable information for fault location, operation and maintenance cutover, etc. This specific embodiment can also inspect the physical routing of optical cables using optical cable location information reported from multiple locations.

[0166] The many details described in this specific embodiment 3 are only helpful for understanding the technical concept of this application and do not constitute a limitation of this application. More simple transformations based on the technical concept of this application should all be within the scope of protection of this application.

[0167] Example 4

[0168] An embodiment of the present application provides an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method for finding a communication optical cable in the first embodiment.

[0169] With reference to Figure 12 below, it shows the structural representation of the electronic device that is suitable for realizing the embodiment of the present disclosure.As shown in Figure 12, electronic equipment may include processing means 1001 (such as central processing unit, graphics processing unit, etc.), which can perform various appropriate actions and processes according to the program stored in read-only memory (ROM1002) or the program loaded into random access memory (RAM1004) from storage device.In RAM1004, various programs and data required for electronic device operation are also stored.Processing means 1001, ROM1002 and RAM1004 are connected to each other by bus 1005. Input / output (I / O) interface is also connected to bus 1005.

[0170] Typically, the following systems may be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, etc.; an output device 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows an electronic device with various systems, it is not required to implement or have all of the systems shown. More or fewer systems may be implemented or have instead.

[0171] According to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment of the present disclosure are performed.

[0172] The electronic device provided by this application adopts the method for finding a communication optical cable in the above-mentioned embodiment, which can solve the technical problem of how to improve the accuracy of finding and locating an optical cable without damaging the optical cable. Compared with the prior art, the beneficial effects of the electronic device provided by the embodiment of this application are the same as the beneficial effects of the method for finding a communication optical cable provided by the above-mentioned embodiment, and the other technical features of the electronic device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0173] The various parts of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any appropriate manner in any one or more embodiments or examples.

[0174] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0175] Example 5

[0176] An embodiment of the present application provides a computer-readable storage medium having computer-readable program instructions stored thereon, and the computer-readable program instructions are used to execute the communication optical cable tracing method in the above embodiment.

[0177] The computer-readable storage medium provided in the embodiment of the present application can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. A more specific example of a computer-readable storage medium can include, but is not limited to, an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present embodiment, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by an instruction execution system, a system or a device or used in combination therewith. The program code contained in the computer-readable storage medium can be transmitted with any appropriate medium, including but not limited to: an electric wire, an optical cable, RF (radio frequency), etc., or any suitable combination thereof.

[0178] The computer-readable storage medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0179] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by an electronic device, the electronic device: when applying a preset disturbance stress to the optical cable point to be detected, dynamically detects the polarization state information of the probe light currently transmitted by the target optical cable through a Brillouin optical time domain reflectometer connected to the target optical cable; and determines whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information. Alternatively, when applying a preset disturbance stress to the optical cable point to be detected, dynamically detects the polarization state information of the probe light currently transmitted by the target optical cable through an optical digital signal processing unit of a coherent optical module connected to the target optical cable; and determines whether the optical cable to be identified at the optical cable point to be detected is the target optical cable based on the dynamically detected polarization state information. Alternatively, when a preset disturbance stress is applied to the optical cable point to be detected, the polarization state information of the detection light currently transmitted by the target optical cable is dynamically detected by a polarization time domain reflectometer corresponding to the target optical cable; and based on the dynamically detected polarization state information, it is determined whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

[0180] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0181] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0182] The modules involved in the embodiments described in this disclosure may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0183] The computer-readable storage medium provided in this application stores computer-readable program instructions for executing the aforementioned method for locating a communication optical cable, and can solve the technical problem of improving the accuracy of locating and positioning an optical cable without damaging the optical cable. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided in the embodiments of this application are the same as the beneficial effects of the method for locating a communication optical cable provided in Examples 1 to 3 above, and are not further described here.

[0184] Example 6

[0185] An embodiment of the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for locating a communication optical cable.

[0186] The computer program product provided in this application can solve the technical problem of how to improve the accuracy of locating an optical cable without damaging the cable. Compared with the prior art, the beneficial effects of the computer program product provided in the embodiments of this application are the same as the beneficial effects of the communication optical cable locating methods provided in Examples 1 to 3 above, and will not be elaborated here.

[0187] The above are merely optional embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A method for finding a communication optical cable, wherein: The method comprises: Under the condition that a preset disturbance stress is applied to the point of the optical cable to be detected, the polarization state information of the detection light currently transmitted by the target optical cable is dynamically detected by a Brillouin optical time domain reflectometer correspondingly connected to the target optical cable; According to the dynamically detected polarization state information, it is determined whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

2. The method for finding a communication optical cable according to claim 1, wherein: The step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable according to the polarization state information detected dynamically comprises: Converting the dynamically detected polarization state information into a polarization state dynamic image; The polarization state dynamic image is output and displayed through a preset network management application display interface, wherein the polarization state dynamic image is configured to indicate whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

3. The method for finding a communication optical cable according to claim 1, wherein: The step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable according to the polarization state information detected dynamically comprises: According to the dynamically detected polarization state information, identifying frequency deviation fluctuation information within a current preset monitoring period; When the frequency deviation change value corresponding to the frequency deviation fluctuation information is greater than a preset threshold, determining that the optical cable to be identified at the optical cable point to be detected is the target optical cable; When the frequency deviation change value corresponding to the frequency deviation fluctuation information is not greater than a preset threshold, it is determined that the optical cable to be identified at the optical cable point to be detected is not the target optical cable.

4. The method for finding a communication optical cable according to claim 1, wherein: The step of determining whether the optical cable to be identified at the optical cable point to be detected is the target optical cable according to the polarization state information detected dynamically comprises: Converting the dynamically detected polarization state information into a polarization state dynamic image; Outputting and displaying the polarization state dynamic image through a preset network management application display interface; The polarization state dynamic image displayed on the network management application display interface is collected, and image recognition processing is performed on the collected polarization state dynamic image to identify whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

5. The method for finding a communication optical cable according to claim 1, wherein: The method further comprises: Under the condition that preset disturbance stress is applied to a plurality of different optical cable points to be detected in sequence, it is determined in sequence whether the optical cable to be identified at each of the optical cable points to be detected is the target optical cable according to the polarization state information detected dynamically; The optical cable point to be detected on the target optical cable is taken as the target point, and two adjacent target points among the target points are connected by trajectories to construct point path information; The planned optical cable direction of the target optical cable is determined according to the point path information.

6. The method for finding a communication optical cable according to claim 5, wherein: After determining the planned optical cable direction of the target optical cable according to the point path information, the method further includes: Acquire preset service routing planning information, wherein the service routing planning information includes the service routing planning direction of the target optical cable; According to the service route planning information, identifying whether the planned direction of the optical cable is consistent with the planned direction of the service route; When it is identified that the direction is inconsistent with the service route planning, an alarm prompt message is output.

7. The method for finding a communication optical cable according to any one of claims 1 to 6, wherein: The service light and the detection light transmitted by the target optical cable are in a synaesthesia mode or a non-synaesthesia mode, wherein in the non-synaesthesia mode, the service light and the detection light are transmitted through different optical fibers in the target optical cable.

8. A method for finding a communication optical cable, wherein: The method comprises: Under the condition that a preset disturbance stress is applied to the optical cable point to be detected, the polarization state information of the detection light currently transmitted by the target optical cable is dynamically detected by a polarization light time domain reflectometer connected to the target optical cable; According to the dynamically detected polarization state information, it is determined whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

9. A method for finding a communication optical cable, wherein: The method comprises: Under the condition that a preset disturbance stress is applied to the optical cable point to be detected, the polarization state information of the detection light currently transmitted by the target optical cable is dynamically detected through the optical digital signal processing unit of the coherent optical module correspondingly connected to the target optical cable; According to the dynamically detected polarization state information, it is determined whether the optical cable to be identified at the optical cable point to be detected is the target optical cable.

10. An electronic device, wherein: The electronic device comprises: a memory, a processor and a communication optical cable finding program stored in the memory and executable on the processor, wherein the communication optical cable finding program, when executed by the processor, implements the communication optical cable finding method as claimed in any one of claims 1 to 9.

11. A computer-readable storage medium, wherein: The computer-readable storage medium stores a communication optical cable locating program, and when the communication optical cable locating program is executed by a processor, the communication optical cable locating method according to any one of claims 1 to 9 is implemented.

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