Method and system for combined optical performance monitoring, rate and modulation pattern recognition

Abstract

The invention provides a method and a system for combined optical performance monitoring, rate and modulation pattern recognition, which can identify optical signal rate and modulation format while realize optical performance monitoring. The method comprises the following steps of: acquiring two-dimensional scatter maps of different rates and different modulation formats under different light performance damages, and dividing the acquired two-dimensional scatter maps into a training set and a test set; A multi-task convolutional neural network model is constructed, in which the first four layers are convolutional pooling layers, the fifth layer is feature sharing layer, and the sixth layer has three output ports, the first output port is optical performance damage monitoring output, the second output port is modulation format class output, and the third output port is rate class output. The training set is used as the input of the multi-task convolutional neural network model, and thecorresponding light performance damage value, rate category and modulation format category are used as the label value training model. The present invention is suitable for optical performance monitoring and rate / modulation format recognition operations.

Description

technical field [0001] The invention relates to the field of optical fiber network performance monitoring and deep learning, in particular to a method and system for joint optical performance monitoring and rate and modulation format identification. Background technique [0002] Future optical networks are designed to be dynamic and heterogeneous. In order to meet the various needs of end users, optical networks need to be able to transmit various signals with different modulation formats and bit rates. Due to the complexity of heterogeneous optical networks, optical signals can traverse different paths and accumulate various transmission impairments. Therefore, it is necessary to deploy sufficient optical performance monitoring (Optical Performance Monitoring, OPM) equipment at intermediate nodes of a dynamic optical fiber communication network for real-time monitoring of channel impairments. Similarly, Bit-Rate / Modulation Format Identification (BR-MFI) can provide additi...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and system for joint optical performance monitoring and rate and modulation format identification to solve the problems of lack of automatic feature extraction and feature sharing in the prior art

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