CN116827428A - Optical fiber link diagnosis and fault positioning system, method and storage medium - Google Patents

Abstract

A system, a method and a storage medium for diagnosing and positioning optical fiber links comprise a plurality of jumping fibers, a plurality of distribution cabinets, a plurality of expansion discs, a plurality of communication devices and a monitoring station. The intelligent identification, management and monitoring of each connection point and connecting line in the optical fiber link are realized by adopting the jump fiber embedded with the optical fiber code in the optical fiber link formed by a plurality of distribution cabinets, a plurality of expansion discs and a plurality of communication devices. The identifiable and monitoring characteristics of the optical fiber codes are particularly utilized to realize intelligent management and fault diagnosis of components such as fiber skipping and the like. The expansion disc can automatically monitor the state of the optical port, and upload the state of the optical port and the optical fiber coding information thereof in real time. The monitoring station can accurately identify each wiring component of the optical link and the topological connection relation thereof by scanning the optical fiber coding information on each optical fiber service channel, thereby realizing the automatic identification and intelligent management of the optical link.

Description

Optical fiber link diagnosis and fault positioning system, method and storage medium

Technical Field

The present application relates to the field of optical fiber communications, and in particular, to a system, a method and a storage medium for diagnosing and locating faults of an optical fiber link.

Background

For a long time, the components such as the optical fiber connecting wire, the optical fiber distribution wire, the optical cable and the like in the optical fiber link network system are named, labeled and identified by adopting labels and electronic labels, equipment resource management is carried out by utilizing documents, and the external additional identification mode is easy to cause the problems of manual error, labeling failure and the like, so that the management efficiency of the traditional optical fiber link network system is low, the error rate is high, and some optical links are even in a 'tube-off' state. In addition, the existing optical fiber link network system has defects in fault diagnosis and positioning means, and the safe and reliable operation of the communication network cannot be ensured. Therefore, an advanced and effective intelligent maintenance technology and management system for the optical fiber link are needed to ensure orderly and reliable management of the optical fiber link network system.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides an optical fiber link diagnosis and fault positioning system, which solves the problems of low management efficiency, high error rate and difficult fault positioning of the optical fiber link at present.

The application also provides a method for diagnosing and positioning the faults of the optical fiber link and a computer storage medium.

An optical fiber link diagnosis and fault location system according to an embodiment of the first aspect of the present application includes:

the optical fiber patch panel comprises a plurality of patch cords, wherein each patch cord is provided with different optical fiber codes;

the distribution cabinets are connected by the fiber jumping;

the expansion discs are connected with the wiring cabinets through the fiber jumping;

the plurality of communication devices are connected with the plurality of distribution cabinets through the fiber jumping;

and the monitoring stations are respectively connected with the expansion discs.

The optical fiber link diagnosis and fault positioning system provided by the embodiment of the application has at least the following beneficial effects:

the intelligent identification, management and monitoring of each connection point and connecting line in the optical fiber link are realized by adopting the jump fiber embedded with the optical fiber code in the optical fiber link formed by a plurality of distribution cabinets, a plurality of expansion discs and a plurality of communication devices. The identifiable and monitoring characteristics of the optical fiber codes are particularly utilized to realize intelligent management and fault diagnosis of components such as fiber skipping and the like. The expansion disc can automatically monitor the state of the optical port, and upload the state of the optical port and the optical fiber coding information thereof in real time. The monitoring station can accurately identify each wiring component of the optical link and the topological connection relation thereof by scanning the optical fiber coding information on each optical fiber service channel, thereby realizing the automatic identification and intelligent management of the optical link. The monitoring station can also monitor each optical link on line in real time and diagnose faults, the diagnosis result covers various types of faults, the fault position can be accurate to the port or the wiring component, and the fault diagnosis time is less than 20 seconds in practice. Therefore, the system of the embodiment of the application solves the problems of low management efficiency, high error rate and difficult fault location of the optical fiber link.

According to some embodiments of the application, the optical fiber encoding uses a fiber grating.

According to some embodiments of the application, the monitoring station is provided with a spectrometer, which is connected to a plurality of the expansion discs, respectively.

According to some embodiments of the application, the monitoring station is provided with edge filters respectively connected to a plurality of the expansion discs.

According to some embodiments of the application, the monitoring station is provided with a tunable optical fiber fabry-perot filter, which is connected to the plurality of expansion discs, respectively.

According to a second aspect of the present application, an optical fiber link diagnosis and fault location method is applied to the optical fiber link diagnosis and fault location system according to any one of the first aspect of the present application, and includes the following steps:

acquiring optical link state information, wherein the optical link state information is acquired by a plurality of expansion discs and at least comprises reflection energy of a plurality of optical fiber codes;

and analyzing the state information of the optical link, and determining that the connection section of the optical fiber code corresponding to the jump fiber fails when the reflected energy of the optical fiber code is suddenly changed.

The optical fiber link diagnosis and fault positioning method provided by the embodiment of the application has at least the following beneficial effects:

the intelligent identification, management and monitoring of each connection point and connecting line in the optical fiber link are realized by adopting the jump fiber embedded with the optical fiber code in the optical fiber link formed by a plurality of distribution cabinets, a plurality of expansion discs and a plurality of communication devices. The identifiable and monitoring characteristics of the optical fiber codes are particularly utilized to realize intelligent management and fault diagnosis of components such as fiber skipping and the like. The expansion disc can automatically monitor the state of the optical port, and upload the state of the optical port and the optical fiber coding information thereof in real time. The monitoring station can accurately identify each wiring component of the optical link and the topological connection relation thereof by scanning the optical fiber coding information on each optical fiber service channel, thereby realizing the automatic identification and intelligent management of the optical link. The monitoring station can also monitor each optical link on line in real time and diagnose faults, the diagnosis result covers various types of faults, the fault position can be accurate to the port or the wiring component, and the fault diagnosis time is less than 20 seconds in practice. Therefore, the method of the embodiment of the application solves the problems of low management efficiency, high error rate and difficult fault location of the optical fiber link.

According to some embodiments of the application, the optical fiber code adopts an optical fiber grating, and the monitoring station is provided with a spectrometer which is respectively connected with a plurality of expansion discs;

the analyzing the optical link state information comprises the following steps:

the optical link state information is demodulated based on a multi-wavelength meter detection method using the spectrometer.

According to some embodiments of the application, the optical fiber code adopts an optical fiber grating, and the monitoring station is provided with edge filters which are respectively connected with a plurality of expansion discs;

the analyzing the optical link state information comprises the following steps:

and demodulating the optical link state information based on the linear demodulation principle of the edge filter.

According to some embodiments of the application, the optical fiber code adopts an optical fiber grating, and the monitoring station is provided with an adjustable optical fiber fabry-perot filter, and the adjustable optical fiber fabry-perot filter is respectively connected with a plurality of expansion discs;

the analyzing the optical link state information comprises the following steps:

demodulating the optical link state information based on a tunable filtering detection method using the tunable optical fiber fabry-perot filter.

A computer readable storage medium according to an embodiment of the third aspect of the present application stores computer executable instructions for performing the optical fiber link diagnosis and fault localization method according to any one of the embodiments of the second aspect described above.

It will be appreciated that the advantages of the third aspect compared with the related art are the same as those of the second aspect, and reference may be made to the related description of the second aspect, which is not repeated here.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a fiber link diagnosis and fault location system according to an embodiment of the present application;

FIG. 2 is a flow chart of a method for diagnosing and locating faults in an optical fiber link according to an embodiment of the present application.

Reference numerals:

a fiber jumping 100;

a wiring cabinet 200;

expansion tray 300;

a communication device 400;

the monitoring station 500.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, the description of first, second, etc. is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be determined reasonably by a person skilled in the art in combination with the specific content of the technical solution.

The following description of the embodiments of the present application will be made with reference to the accompanying drawings, in which it is apparent that the embodiments described below are some, but not all embodiments of the application.

As shown in fig. 1, a schematic diagram of an optical fiber link diagnosis and fault location system according to an embodiment of the present application includes: a plurality of patch cords 100, a plurality of distribution cabinets 200, a plurality of expansion boards 300, a plurality of communication devices 400, and a monitoring station 500. Each fiber hop 100 is provided with a different fiber code; the plurality of wiring cabinets 200 are connected by the fiber jumpers 100; the plurality of expansion discs 300 are connected with the plurality of wiring cabinets 200 through the fiber jumpers 100; the plurality of expansion discs 300 are connected with the plurality of wiring cabinets 200 through the fiber jumpers 100; the monitoring station 500 is connected to a plurality of expansion disks 300, respectively.

Specifically, referring to fig. 1, it may be understood that the distribution cabinet 200 refers to an optical fiber distribution box (Optical Fiber Distribution Box, ODB) adapted for connecting an optical cable with a wiring of the optical communication device 400, and uses an optical jumper to extract an optical signal through an adapter in the distribution box, so as to implement an optical distribution function, and is also adapted for a protective connection between the optical cable and a distribution tail fiber, and is also adapted for use as an optical fiber termination point in an optical fiber access network. Accordingly, the distribution cabinets 200 are connected by a certain number of the fiber hops 100, and a certain topological fiber link structure can be formed. The plurality of communication devices 400 may thus be connected to any one of the distribution cabinets 200, respectively, so as to achieve information interaction between the respective communication devices 400.

Further, in the embodiment of the present application, a plurality of expansion boards 300 are provided to connect between the communication device 400 and the distribution cabinet 200, so as to monitor the port status in the optical fiber link in real time, and different optical fiber codes are provided on the optical fiber hops 100 for connecting all devices, and based on the unique identifiability of the optical fiber codes, the expansion boards 300 can further obtain the optical fiber code information. Therefore, the expansion board 300 can finally transmit the port state and the optical fiber code information to the monitoring station 500 for processing, so that the operation quality of the optical fiber link can be diagnosed in real time, the optical fiber code of each fiber hop 100 is used as a real-time diagnosis node, the section where the fault is located can be directly judged, and the fault is directly located to the positions of the optical fiber connecting wire, the optical fiber connecting flange and the like.

It should be noted that, after the optical fiber code is set on each fiber 100, the fiber 100 and the optical fiber code form an intelligent fiber, and the intelligent fiber will be shown by the reflection energy point capable of ranging in the monitoring station 500, and the reflection waveform is accompanied by the identifiable optical address code of different wavelength combinations. The specific characteristics are as follows: each intelligent fiber-jumping has a globally unique optical address code, and the address code is always present, not repeated and can not be changed in the optical fiber after solidification, thereby being beneficial to the identification of optical products; when the intelligent fiber-jumping leaves the factory, the two ends are printed with optical address coding numbers, and meanwhile, the two ends are provided with electronic tags, and the optical address coding numbers of the fiber connection line are solidified in the electronic tags, so that the intelligent fiber-jumping leaves the factory in-situ multiple identification modes are facilitated.

In this embodiment, the optical fiber links formed by the plurality of distribution cabinets 200, the plurality of expansion boards 300 and the plurality of communication devices 400 are provided with the optical fiber-embedded coded patch cords 100, so that intelligent identification, management and monitoring of each connection point and connection line in the optical fiber links are realized. The identifiable and monitoring characteristics of the optical fiber codes are particularly utilized to realize intelligent management and fault diagnosis of the components such as the fiber jumping 100. The expansion disk 300 can automatically monitor the status of the optical port and upload the status of the optical port and the optical fiber coding information thereof in real time. The monitoring station 500 can accurately identify each wiring component of the optical link and the topological connection relation thereof by scanning the optical fiber coding information on each optical fiber service channel, thereby realizing the automatic identification and intelligent management of the optical link. The monitoring station 500 can also perform online real-time monitoring and fault diagnosis on each optical link, the diagnosis result covers various types of faults, the fault position can be accurate to a port or a wiring component, and the fault diagnosis time is less than 20 seconds in practice. Therefore, the system of the embodiment of the application solves the problems of low management efficiency, high error rate and difficult fault location of the optical fiber link.

In some embodiments, the fiber optic encoding employs fiber optic gratings.

Specifically, it should be noted that the optical fiber code is composed of a plurality of reflective and transmissive identifiers, and can be distinguished by different wavelengths or different identifier setting pitches when reflecting and transmitting light waves, so as to realize unique characteristics of the optical fiber code under the light waves. The reflection or transmission mark of the optical fiber code can be sampled by a plurality of different elements, and mainly comprises an optical fiber grating, a reflection film (sheet), a transmission film (sheet) and a silicon-based linear grating. The wavelength width is larger in the existing products of the reflective film (sheet) and the transmissive film (sheet), so that the reflective film (sheet) and the transmissive film (sheet) are not applicable to the existing application scenes; the silicon base line engraving grating can be directly engraved on the silicon substrate of the light splitter, but the silicon substrate has small required size, the space between the silicon base line engraving grating and the light splitter is very small, the required light source pulse and the acquisition space precision are relatively high, and the cost is very high; the fiber grating comprises a reflection fiber grating, a transmission fiber grating, a phase fiber grating and the like, is directly carved on the optical fiber, and can be directly butted with an optical fiber material product, so that the cost is relatively low, and the fiber grating is preferably adopted as the optical fiber code of the embodiment of the application.

Further, for the fiber grating arranged in the fiber link, based on the fiber medium characteristics and the stable wavelength reflection identification characteristics of the fiber grating, a fiber grating group formed by specific rules is utilized as the identity ID of the fiber medium in the optical network. Coding of the optical fiber medium product is realized by coding implantation technology of the optical fiber medium, and remote centralized identification of optical fiber coding is realized by optical fiber coding identification technology. Encoding a mass of optical fiber media in an optical fiber link network, and identifying the encodings in real time, so that the uniqueness of the encodings and the optical fiber media can be ensured and the encodings and the optical fiber media are not missed or repeated; the instantaneity and the accuracy of code identification are ensured, and erroneous judgment and missed judgment are avoided.

In some embodiments, the monitoring station 500 is provided with a spectrometer that is respectively connected to the plurality of expansion discs 300.

Specifically, it should be noted that, when the fiber code uses the fiber grating, the monitoring station 500 needs to demodulate the optical signal reflected or transmitted by the fiber grating accordingly, and thus a corresponding fiber grating sensing system needs to be provided. Demodulation schemes for fiber grating sensors include intensity demodulation, phase demodulation, frequency demodulation, polarization demodulation, wavelength demodulation, and the like. The wavelength demodulation technology has the advantages of carrying out wavelength coding on sensed information, carrying out narrow-band reflection at the central wavelength, not needing to compensate the loss of an optical fiber connector and a coupler and the fluctuation of the output power of a light source, and the like, and is widely applied. In the sensing process, light waves emitted by a light source enter the fiber bragg grating through the connector by a transmission channel, and the fiber bragg grating modulates the light waves under the action of an external field (mainly stress and temperature); the modulated light wave with the external field information is then reflected (or transmitted) by the fiber grating, enters the receiving channel from the connector, is received and demodulated by the detector, and is output. Since the spectrum received by the detector contains information about the external field effect, a detailed description of the external field information can be obtained from the spectral analysis and related changes detected by the detector. In contrast, reflection-based sensing demodulation systems are relatively easy to implement.

It will be appreciated that a key technique of a fibre-optic grating sensing system is to measure the shift in its wavelength. Typically, the wavelength of the light to be measured is measured using a spectrum analyzer, including a monochromator, a fourier transform spectrometer, and the like. The wavelength measuring range is wide, the resolution ratio is high, the micro strain can be measured, the method is very simple and convenient to use for distributed measurement, but the method is large in size and high in price, is generally used in a laboratory, and is not suitable for practical field use. In practical application, the optical fiber grating has to be used for researching and developing a novel sensing demodulation system with high sensitivity, high light energy utilization rate, good stability and high cost performance to replace a spectrum analyzer in a laboratory so as to be used for field actual measurement and monitoring of an engineering structure.

Further, the embodiment adopts a spectrometer as a fiber grating sensing system, so that the most direct detection of wavelength shift can be performed: the optical fiber grating is input by a broadband light source (such as a Light Emitting Diode (LED)), and the center wavelength shift of the output light is detected by a spectrometer (or a multi-wavelength meter). The method has the characteristics of simple structure, portability, durability, easy use, automatic test and the like, and is commonly used in laboratories.

In some embodiments, the monitoring station 500 is provided with edge filters that are respectively connected to the plurality of expansion disks 300.

Specifically, it can be understood that the present embodiment uses an edge filter as the fiber bragg grating sensing system, based on the linear demodulation principle of the edge filter, the variation of the output light intensity of the edge filter is directly proportional to the wavelength shift, the optical signal reflected from the fiber bragg grating and including wavelength shift modulation is split into two beams, and the two beams are respectively sent to two unbalanced filters, and the two light intensities are divided by the filter, so that the result includes the information of wavelength shift.

In some embodiments, the monitoring station 500 is provided with tunable fiber fabry-perot filters that are respectively connected to the plurality of expansion disks 300.

Specifically, it can be appreciated that the present embodiment employs a tunable optical fiber fabry-perot filter as the fiber grating sensing system. Tunable fiber fabry-perot filters (FFPs) have been widely used for signal demodulation of fiber gratings, where the filter can be described by a lorentz line shaped bandpass response, typically with a bandwidth of 0.3nm and a working range of tens of nanometers, limited by the Free Spectral Range (FSR) between resonances determined by the two plane mirror distance.

The cavity length of the Fabry-Perot cavity can be changed by precisely moving the distance between the plane mirrors through piezoelectric ceramics (PZ), so that the tuning of the filter is realized. The scanning frequency of the current tunable FPF can reach 1kHz. The filter has two modes of operation: a tracking (closed loop) mode of a single grating may be detected; a scan pattern of a plurality of gratings may be detected. In order to ensure that the reflected signal of the fiber grating can always be detected by the FFP, the free spectral range of the FFP should be larger than the working spectral range of the fiber grating. The tunable wavelength fiber fabry-perot filter detects the tracking mode of a single fiber grating.

In some embodiments, the monitoring station 500 is provided with a reference grating, a light detector, and a signal generator that constitute a matched grating detection system that is respectively connected to the plurality of expansion disks 300.

Specifically, it can be understood that the matching grating detection system is adopted as the fiber grating sensing system in this embodiment, and the specific demodulation principle is as follows: and a reference grating is arranged at the detection end, and the grating constant of the reference grating is the same as that of the fiber grating. The reference grating is attached to a piezoelectric ceramic Plate (PZT), which is controlled by an applied scan voltage. When the fiber grating is in a free state, the reflected light of the reference grating is strongest, and the amplitude of the output signal of the optical detector is highest. At this time, the scanning signal generator is controlled to make the fixed output of the scanning signal generator be zero level, when the fiber bragg grating senses the external temperature and the strain, the fiber bragg grating shifts to reduce the reflected light intensity of the reference bragg grating, the signal generator works to make the output of the reference bragg grating reach the original value again, and at this time, the scanning voltage corresponds to a certain external physical quantity.

In addition, referring to fig. 2, a flowchart of a method for diagnosing and locating a fault on an optical fiber link according to an embodiment of the present application is applied to any optical fiber link diagnosing and locating system according to an embodiment of the present application, and includes the following steps:

acquiring optical link state information, wherein the optical link state information is acquired by a plurality of expansion discs 300, and the optical link state information at least comprises reflection energy of a plurality of optical fiber codes;

analyzing the optical link state information, and determining that the connection section of the optical fiber code corresponding to the jump fiber 100 fails when the reflected energy of the optical fiber code is suddenly changed.

Specifically, referring to fig. 2, it can be understood that the optical fiber link diagnosis and fault location system according to the embodiment of the present application is used to implement an optical fiber link diagnosis and fault location method, and the optical fiber link diagnosis and fault location method according to the embodiment of the present application corresponds to the foregoing optical fiber link diagnosis and fault location system, and specific processing procedures refer to the foregoing optical fiber link diagnosis and fault location system and are not repeated herein.

In this embodiment, the optical fiber links formed by the plurality of distribution cabinets 200, the plurality of expansion boards 300 and the plurality of communication devices 400 are provided with the optical fiber-embedded coded patch cords 100, so as to realize intelligent identification, management and monitoring of each connection point and connection line in the optical fiber links. The identifiable and monitoring characteristics of the optical fiber codes are particularly utilized to realize intelligent management and fault diagnosis of the components such as the fiber jumping 100. The expansion disk 300 can automatically monitor the status of the optical port and upload the status of the optical port and the optical fiber coding information thereof in real time. The monitoring station 500 can accurately identify each wiring component of the optical link and the topological connection relation thereof by scanning the optical fiber coding information on each optical fiber service channel, thereby realizing the automatic identification and intelligent management of the optical link. The monitoring station 500 can also perform online real-time monitoring and fault diagnosis on each optical link, the diagnosis result covers various types of faults, the fault position can be accurate to a port or a wiring component, and the fault diagnosis time is less than 20 seconds in practice. Therefore, the method of the embodiment of the application solves the problems of low management efficiency, high error rate and difficult fault location of the optical fiber link.

In some embodiments, the fiber optic code employs fiber bragg gratings, and the monitoring station 500 is provided with spectrometers respectively connected to the plurality of expansion discs 300;

analyzing the optical link state information, including the following steps:

the optical link state information is demodulated based on a multi-wavelength meter detection method using a spectrometer.

Specifically, it can be understood that the method for demodulating the optical link status information by using the spectrometer in this embodiment corresponds to the foregoing system embodiment, and the specific processing procedure refers to the foregoing embodiment of the optical fiber link diagnosis and fault location system, which is not described herein again.

In some embodiments, the fiber optic code employs fiber gratings, and the monitoring station 500 is provided with edge filters that are respectively connected to the plurality of expansion disks 300;

analyzing the optical link state information, including the following steps:

the optical link state information is demodulated based on the linear demodulation principle of the edge filter.

Specifically, it can be understood that the method for demodulating the optical link status information by using the edge filter in this embodiment corresponds to the foregoing system embodiment, and the specific processing procedure refers to the foregoing embodiment of the optical fiber link diagnosis and fault location system, which is not described herein.

In some embodiments, the fiber optic code employs fiber bragg gratings, and the monitoring station 500 is provided with tunable fiber fabry-perot filters, which are respectively connected to the plurality of expansion disks 300;

analyzing the optical link state information, including the following steps:

the optical link state information is demodulated based on a tunable filter detection method using a tunable optical fiber fabry-perot filter.

Specifically, it can be understood that the method for demodulating the optical link state information by using the tunable optical fiber fabry-perot filter in this embodiment corresponds to the foregoing system embodiment, and the specific processing procedure refers to the foregoing embodiment of the optical fiber link diagnosis and fault location system, which is not described herein.

In some embodiments, the monitoring station 500 is provided with a reference grating, a light detector and a signal generator, which form a matched grating detection system, and the matched grating detection system is respectively connected with the plurality of expansion discs 300;

analyzing the optical link state information, including the following steps:

the optical link state information is demodulated based on a matched grating detection method using a matched grating detection system.

Specifically, it can be understood that the method for demodulating the optical link status information by using the matching grating detection system in this embodiment corresponds to the foregoing system embodiment, and the specific processing procedure refers to the foregoing embodiment of the optical fiber link diagnosis and fault location system, which is not described herein.

In some embodiments, the monitoring station 500 may also demodulate the optical link state information based on wavelength tunable light source demodulation.

Specifically, it can be understood that the tuning principle of the tunable narrowband light source is that the narrowband tunable light is input into the fiber grating, and the output wavelength of the narrowband tunable light is periodically scanned to obtain the reflection spectrum (or transmission spectrum) of the fiber grating, and the corresponding wavelength value can be known from the scanning voltage when the reflected light is strongest in each scanning.

In some embodiments, the monitoring station 500 may also demodulate the optical link status information based on CCD spectrometer detection.

Specifically, it can be understood that the reflection spectrum (or transmission spectrum) of the sensing grating is collimated by the lens and then spatially spread, and the relative light intensity of each wavelength is directly measured by the CCD.

In addition, the embodiment of the application also provides an optical fiber link diagnosis and fault positioning device, which comprises: at least one control processor and a memory for communication connection with the at least one control processor.

The memory, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located relative to the processor, the remote memory being connectable to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

A non-transitory software program and instructions required to implement a fiber link diagnosis and fault location method of the above embodiments are stored in memory, which when executed by a processor, performs a fiber link diagnosis and fault location method of the above embodiments, for example, performs the method of fig. 1 described above.

The system embodiments described above are merely illustrative, in that the units illustrated as separate components may or may not be physically separate, i.e., may be located in one place, or may be distributed over a plurality of network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, embodiments of the present application further provide a computer-readable storage medium storing computer-executable instructions that are executed by one or more control processors to cause the one or more control processors to perform a method for diagnosing and locating a fault in an optical fiber link in the method embodiment, for example, to perform the method in fig. 1 described above.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application.

Claims (10)

1. A fiber optic link diagnostic and fault locating system, comprising:

the optical fiber patch panel comprises a plurality of patch cords, wherein each patch cord is provided with different optical fiber codes;

the distribution cabinets are connected by the fiber jumping;

the expansion discs are connected with the wiring cabinets through the fiber jumping;

the plurality of communication devices are connected with the plurality of distribution cabinets through the fiber jumping;

and the monitoring stations are respectively connected with the expansion discs.

2. The fiber optic link diagnostic and fault locating system according to claim 1, wherein the fiber optic code employs fiber optic gratings.

3. The fiber optic link diagnostic and fault locating system according to claim 2, wherein the monitoring station is provided with a spectrometer, the spectrometer being connected to a plurality of the expansion discs, respectively.

4. The fiber optic link diagnostic and fault locating system according to claim 2, wherein the monitoring station is provided with edge filters, the edge filters being respectively connected to a plurality of the expansion disks.

5. The fiber optic link diagnostic and fault locating system according to claim 2, wherein the monitoring station is provided with an adjustable fiber fabry-perot filter, the adjustable fiber fabry-perot filter being respectively connected to a plurality of the expansion disks.

6. A method for diagnosing and locating faults of an optical fiber link, applied to the optical fiber link diagnosing and locating system according to any one of claims 1 to 5, comprising the steps of:

acquiring optical link state information, wherein the optical link state information is acquired by a plurality of expansion discs and at least comprises reflection energy of a plurality of optical fiber codes;

and analyzing the state information of the optical link, and determining that the connection section of the optical fiber code corresponding to the jump fiber fails when the reflected energy of the optical fiber code is suddenly changed.

7. The method for diagnosing and positioning a fault on an optical fiber link according to claim 6, wherein the optical fiber code adopts an optical fiber grating, and the monitoring station is provided with a spectrometer which is respectively connected with a plurality of expansion discs;

the analyzing the optical link state information comprises the following steps:

the optical link state information is demodulated based on a multi-wavelength meter detection method using the spectrometer.

8. The method for diagnosing and positioning a fault on an optical fiber link according to claim 6, wherein the optical fiber code adopts an optical fiber grating, and the monitoring station is provided with edge filters, and the edge filters are respectively connected with a plurality of expansion discs;

the analyzing the optical link state information comprises the following steps:

and demodulating the optical link state information based on the linear demodulation principle of the edge filter.

9. The method for diagnosing and positioning a fault on an optical fiber link according to claim 6, wherein the optical fiber code adopts an optical fiber grating, and the monitoring station is provided with an adjustable optical fiber fabry-perot filter, and the adjustable optical fiber fabry-perot filter is respectively connected with a plurality of expansion disks;

the analyzing the optical link state information comprises the following steps:

demodulating the optical link state information based on a tunable filtering detection method using the tunable optical fiber fabry-perot filter.

10. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the optical fiber link diagnosis and fault localization method according to any one of claims 6 to 9.