Monte Carlo simulations of pulse propagation in massive multichannel optical fiber communication systems

TL;DR

This paper investigates how delayed Raman response and bit pattern randomness affect pulse propagation in large multichannel optical fiber systems using stochastic nonlinear Schrödinger equations and extensive numerical simulations.

Contribution

It introduces a comprehensive stochastic model for pulse propagation considering Raman effects and randomness, validated by numerical simulations matching theoretical predictions.

Findings

Good agreement between simulations and theory

Raman response influences pulse amplitude and frequency

Bit pattern randomness impacts error rates

Abstract

We study the combined effect of delayed Raman response and bit pattern randomness on pulse propagation in massive multichannel optical fiber communication systems. The propagation is described by a perturbed stochastic nonlinear Schr\"odinger equation, which takes into account changes in pulse amplitude and frequency as well as emission of continuous radiation. We perform extensive numerical simulations with the model, and analyze the dynamics of the frequency moments, the bit-error-rate, and the mutual distribution of amplitude and position. The results of our numerical simulations are in good agreement with theoretical predictions based on the adiabatic perturbation approach.