CN-122027026-A - Link state monitoring method of optical communication network, electronic equipment and optical communication network

CN122027026ACN 122027026 ACN122027026 ACN 122027026ACN-122027026-A

Abstract

The embodiment of the application relates to the technical field of optical fiber communication, and discloses a link state monitoring method of an optical communication network, electronic equipment and the optical communication network, wherein the link state monitoring method of the optical communication network is applied to the optical communication network, and a link of the optical communication network is used for transmitting optical signals back and forth; the method comprises the steps of converting a digital signal into a Stokes sequence representing the polarization state of light, identifying a plurality of disturbance points in a link according to the Stokes sequence, and determining the positions of the disturbance points in the link according to time offsets respectively corresponding to the disturbance points. The application can accurately monitor the disturbance in the optical communication network link.

Inventors

YANG MING
XIAO XIAO

Assignees

众瑞速联（武汉）科技有限公司
芯速联光电科技(杭州)有限公司

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (10)

1. A method for monitoring the link state of an optical communication network, wherein the link of the optical communication network is used for transmitting optical signals back and forth, the method comprising: acquiring a digital signal corresponding to the optical signal after round trip transmission; Converting the digital signal into a stokes sequence characterizing the polarization state of light; identifying a plurality of scrambling points in the link from the stokes sequence; And determining the position of each disturbance point in the link according to the time offset corresponding to each disturbance point.
2. The method of claim 1, wherein the identifying a plurality of scrambling points in the link from the stokes sequence comprises: generating a plurality of signal components according to the Stokes sequence, wherein each signal component is at least associated with one disturbance point; determining a disturbance jump area according to each signal component and combining an adaptive amplitude threshold value and a minimum peak value interval; And identifying the mutation point in the disturbance jump area as the disturbance point.
3. The method for monitoring the link state of the optical communication network according to claim 2, wherein the identifying the abrupt point in the disturbance jump region as the disturbance point includes: A preset detection window is set to intercept signals of the disturbance jump area; and comparing the numerical value of each point in the intercepted signal with a trigger threshold to determine the abrupt change point.
4. A method of monitoring the link state of an optical communication network according to claim 3, further comprising: determining the numerical average value of each point bit in the intercepted signal; and determining the product of the signal numerical value average value and a preset multiple to serve as the trigger threshold.
5. The method of link state monitoring of an optical communication network according to claim 2, wherein said generating a plurality of signal components from said stokes sequence comprises: Classifying the stokes sequences based on disturbance characteristic frequencies determined by spectrum analysis; And filtering and smoothing the classified Stokes sequences to obtain a plurality of signal components.
6. The method for monitoring the link state of an optical communication network according to any one of claims 2 to 5, wherein said determining the disturbance jump region for each of said signal components in combination with an adaptive amplitude threshold and a minimum peak interval comprises: Extracting amplitude fluctuation characteristics in the signal components through a sliding range algorithm; and determining a plurality of disturbance jump areas according to the amplitude fluctuation characteristics, the self-adaptive amplitude threshold and the minimum peak value interval.
7. The method of claim 6, wherein determining the plurality of disturbance transition zones based on the amplitude fluctuation feature, the adaptive amplitude threshold, and the minimum peak separation comprises: Screening candidate peak points with disturbance characteristics from the amplitude fluctuation characteristics according to the self-adaptive amplitude threshold; And sorting and region clustering the candidate peak points according to position indexes based on the minimum peak intervals so as to classify the continuous candidate peak points with the intervals smaller than the minimum peak intervals as one disturbance jump region.
8. An electronic device, comprising: at least one processor, and A memory communicatively coupled to the at least one processor, wherein, The memory stores instructions executable by the at least one processor to enable the at least one processor to perform the link state monitoring method of an optical communication network according to any one of claims 1 to 7.
9. An optical communications network, comprising: the electronic device of claim 8; The bidirectional optical transmission architecture is used for realizing the round-trip transmission of optical signals along a link; And the signal conversion unit is used for converting the optical signal after round trip transmission into a digital signal and transmitting the digital signal to the electronic equipment.
10. The optical communication network according to claim 9, wherein the bidirectional optical transmission architecture comprises a first circulator, a second circulator and a link, the first circulator and the second circulator being disposed at two ends of the link, respectively, the first circulator being configured to transmit an optical signal to the second circulator through the link, and to transmit an optical signal returned from the second circulator through the link to the signal conversion unit.

Description

Link state monitoring method of optical communication network, electronic equipment and optical communication network Technical Field The embodiment of the application relates to the technical field of optical fiber communication, in particular to a link state monitoring method of an optical communication network, electronic equipment and the optical communication network. Background With the explosive growth of emerging services such as 5G communication, cloud computing, industrial internet and the like, an optical communication network is rapidly evolving towards an ultra-large bandwidth, ultra-low time delay, wide coverage and high reliability as a core bearing infrastructure of information transmission, compared with a traditional communication network, a modern optical communication network has the advantages that the coverage area is continuously enlarged, the link topology is increasingly complex, the number and the length of network links are greatly increased due to the fusion deployment of the core network and an access network, the operation stability and the operation and maintenance management efficiency of the optical communication network are severely challenged, the link state is used as a key factor for determining the transmission quality of the optical communication network, and the stability directly influences the error rate, the bandwidth utilization rate and the service continuity of signal transmission. In the actual operation process, the optical communication link is easily affected by external environment disturbance (such as temperature change, mechanical vibration and construction damage), fiber self aging, loss of a connecting device and other factors, and faults such as signal attenuation, polarization mode dispersion and link interruption occur, so that real-time, accurate and multi-point monitoring of the state of the optical communication network link is realized, fault hidden danger is positioned in time, operation and maintenance response is triggered, and the optical communication network is a core requirement for guaranteeing reliable operation of the network and reducing operation and maintenance cost. The existing optical communication network link state monitoring technology mainly comprises an optical time domain reflection technology, an optical power monitoring technology, a polarization-related loss monitoring technology and the like, wherein the optical time domain reflection technology can be used as a main stream monitoring means to realize the positioning of link faults, but has the defects that the spatial resolution is limited, multi-point parallel monitoring cannot be realized at the same time, the comprehensive monitoring requirement of a complex topological network is difficult to adapt, the optical power monitoring technology can only reflect the overall loss state of a link and cannot accurately capture fine link anomalies such as local disturbance, polarization state change and the like, and the traditional polarization perception monitoring technology often depends on a complex optical demodulation module, so that the monitoring coverage is limited and the monitoring precision is not high. Disclosure of Invention The embodiment of the application aims to provide a link state monitoring method of an optical communication network, electronic equipment and the optical communication network, and aims to solve the problem of accurately monitoring disturbance in a link of the optical communication network. To solve the above technical problem, an embodiment of the present application provides a method for monitoring a link state of an optical communication network, which is applied to the optical communication network, where a link of the optical communication network is used for transmitting an optical signal back and forth, the method includes: acquiring a digital signal corresponding to the optical signal after round trip transmission; Converting the digital signal into a stokes sequence characterizing the polarization state of light; identifying a plurality of scrambling points in the link from the stokes sequence; And determining the position of each disturbance point in the link according to the time offset corresponding to each disturbance point. In some embodiments, the identifying a plurality of scrambling points in the link from the stokes sequence includes: generating a plurality of signal components according to the Stokes sequence, wherein each signal component is at least associated with one disturbance point; determining a disturbance jump area according to each signal component and combining an adaptive amplitude threshold value and a minimum peak value interval; And identifying the mutation point in the disturbance jump area as the disturbance point. In some embodiments, the identifying a mutation point in the perturbed jump region as the perturbation point comprises: A preset detection window is set to intercept signals of the disturbance