Perturbation-based Compensation with EEPN-free Phase Recovery as Back Propagation

TL;DR

This paper introduces a feed-forward perturbation method for nonlinear distortion compensation in optical communication, enhancing performance over traditional decision-based methods and integrating EEPN-free phase recovery for further gains.

Contribution

The paper presents a novel perturbation-based compensation technique that avoids decision feedback and combines with EEPN-free phase recovery for improved signal correction.

Findings

Outperforms conventional decision-based nonlinear compensation methods

Combining with EEPN-free phase recovery yields additional performance gains

Utilizes a symmetrical propagation-backpropagation structure for effective correction

Abstract

We propose a feed-forward perturbation-based method that uses the noisy received signal to compensate for nonlinear distortion, which outperforms the conventional decision-based method and avoids decision feedback. Additionally, combining it with the EEPN-free carrier phase recovery shows additional gain due to a fully symmetrical propagation-backpropagation structure.