Space-division multiplexing optical network crosstalk monitoring, source tracing and optical path re-optimization method

Abstract

The invention discloses a space-division multiplexing optical network crosstalk monitoring, source tracing and optical path re-optimization method, comprising the following steps: acquiring a monitoring wavelength for crosstalk monitoring; building a fine grit optical monitoring channel; bearing a data channel service information; simulating crosstalk of the data channel service; classifying the optical monitoring channels according to a wavelength information in the extracted service information; identifying the optical monitoring channel of the data channel service, and acquiring a signal power P<0>; respectively measuring the signal power P<k> of the other optical monitoring channels in the type of the optical monitoring channels of same wavelength, and acquiring a ratio XT<k> to the signal power P<0>; and when the ratio XT<k> is greater than a preset crosstalk threshold value XT, performing rerouting for a service optical path of which a serial number is k. The method providedby the invention can perform power measurement and information extraction for the signals of all the optical monitoring channels in the monitoring wavelength to realize crosstalk monitoring and sourcetracing, can perform rerouting for the optical path with serious crosstalk, thereby, effectively improves reliability and real-time performance of crosstalk monitoring and optical path re-optimization.

Description

Technical field [0001] The present invention relates to the technical field of optical network communication, in particular to a method for monitoring, traceability and optical path re-optimization of a space division multiplexing optical network crosstalk. Background technique [0002] With the rapid growth of optical network bandwidth requirements, space division multiplexing technology based on multi-core fiber, few-mode fiber and multi-mode fiber is widely used in backbone optical networks to further expand transmission capacity while reducing network costs. However, the introduction of these new optical fibers has brought restrictions on routing and resource allocation to optical networks. Among them, the most important limitation is the limitation of cumulative crosstalk, that is, two optical signals of the same wavelength are in adjacent cores or different Transmission between modes will produce crosstalk, and the crosstalk will accumulate along the transmission path. Once...

AI Technical Summary

Problems solved by technology

However, the introduction of these new optical fibers has brought restrictions on routing and resource allocation to optical networks. Among them, the most important limitation is the limitation of cumulative crosstalk, that is, two optical signals of the same wavelength are in adjacent fiber cores or different The transmission between modes will generate crosstalk, and the crosstalk will accumulate along the transmission path. Once the accumulated crosstalk exceeds a certain value, the receiver will not be able to restore the original signal

[0003] However, due to the power aliasing of the crosstalk signal and the service signal, it is usually impossible to obtain the crosstalk service data and related information, and it is difficult to further block it or re-optimize the route in a targeted manner to avoid or reduce its interference on the service signal

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