Phase noise of dispersion-managed solitons

TL;DR

This paper develops a perturbation theory for dispersion-managed solitons in optical fibers to quantify noise-induced phase deviations, demonstrating the increased robustness of these solitons against phase jitter.

Contribution

It introduces a novel perturbation approach for the dispersion-managed nonlinear Schrödinger equation and validates it through Monte Carlo simulations, enhancing understanding of noise effects in optical systems.

Findings

Dispersion-managed solitons exhibit increased robustness to phase noise.

The developed theory accurately predicts noise-induced phase deviations.

Monte Carlo simulations confirm the validity of the analytical model.

Abstract

We quantify noise-induced phase deviations of dispersion-managed solitons in optical fiber communications and femtosecond lasers. We first develop a perturbation theory for the dispersion-managed nonlinear Schrodinger equation (DMNLSE) in order to compute the noise-induced mean and variance of the soliton parameters. We then use the analytical results to guide importance-sampled Monte-Carlo simulations of the noise-driven DMNLSE. Comparison of these results with those from the original, un-averaged, governing equations confirm the validity of the DMNLSE as a model for many dispersion-managed systems, and quantify the increased robustness of dispersion-managed solitons with respect to noise-induced phase jitter.