Longitudinal gOSNR Monitoring by Receiver-side Digital Signal Processing in Multi-Span Optical Transmission System

TL;DR

This paper introduces a novel receiver-side digital signal processing method for continuous gOSNR monitoring in multi-span optical transmission systems, eliminating the need for intermediate monitoring devices.

Contribution

It presents the first longitudinal gOSNR estimation technique using correlation templates at the receiver in a multi-span link with experimental validation.

Findings

Successful experimental demonstration in a 12-span link

Achieved accurate gOSNR monitoring without in-line devices

First implementation of receiver-side longitudinal gOSNR estimation

Abstract

We propose the world first longitudinal gOSNR estimation by using correlation template method at Rx, without any monitoring devices located in the middle of the link. The proposed method is experimentally demonstrated in a 12-span link with commercial transceiver.