A System for Joint Monitoring of Modulation Format and Optical Signal-to-Noise Ratio Based on Anomaly Detection

Abstract

The present invention provides a system for jointly monitoring modulation format and optical signal-to-noise ratio based on anomaly detection, which includes a two-stage cascaded network. The first-stage network includes a preprocessing module, an entropy calculation module, a modulation format identification network, and an anomaly detection network. The secondary network includes an optical signal-to-noise ratio prediction network. Aiming at the defects of the existing cascaded network structure, the data statistical characteristics of the primary network are monitored through the anomaly detection network using an anomaly monitoring algorithm, which can monitor the identification in the primary network. In the event of errors, these miscalculations are reprocessed to ensure that the labels entering the secondary network are all accurate labels, which can automatically monitor the error transmission and improve the detection accuracy of the cascaded structure. It can be used in network intermediate nodes, spectrometers, optical performance detectors and other modules that can sample signals and then analyze statistical characteristics, and then embed them into devices for intelligent signal analysis and optical performance detection.

Description

technical field [0001] The invention belongs to the field of optical communication, and specifically relates to a cascade deep learning optical performance monitoring technology based on an abnormality detection algorithm. Background technique [0002] Due to the continuous improvement of the Internet and everyone's demand for data capacity, optical communication has flourished in the past ten years. In order to meet the huge bandwidth demand brought about by the growth of data traffic, the optical fiber communication network has undergone tremendous changes at present. Modulation formats that offer high spectral efficiency have been successfully used in conjunction with digital coherent receivers utilizing reconfigurable optical drop multiplexers (ROADMs) to provide flexible network architectures with flexible modulation formats and bandwidths to facilitate dynamic, transparent fiber optic transmission. The emergence of ROADMs has made the fiber optic communication networ...

AI Technical Summary

Problems solved by technology

However, if the first-level network fails to correctly identify the information, the error will be transmitted to the second-level network, which will cause the monitoring accuracy of the second-level network to drop sharply.

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