Mitigation of inter-channel nonlinear interference in WDM systems

TL;DR

This paper presents a method to reduce inter-channel nonlinear interference noise in WDM systems by employing a decision directed recursive least-squares algorithm that exploits temporal correlations, improving system performance.

Contribution

Introduces a practical adaptive filtering technique to mitigate NLIN in WDM systems, leveraging temporal correlations for enhanced performance.

Findings

Significant reduction in nonlinear interference noise

Improved system performance with the proposed algorithm

Effective across multiple amplification schemes

Abstract

We demonstrate mitigation of inter-channel nonlinear interference noise (NLIN) in WDM systems for several amplification schemes. Using a practical decision directed recursive least-squares algorithm, we take advantage of the temporal correlations of NLIN to achieve a notable improvement in system performance.