Soliton trapping in multimode fibers with random mode coupling

TL;DR

This paper derives generalized equations for nonlinear propagation in multimode fibers with random mode coupling, predicting nonlinear compensation of modal dispersion, supported by computer simulations.

Contribution

It introduces a generalized Manakov equation for multimode fibers with random mode coupling, extending single-mode polarization models.

Findings

Nonlinear compensation of modal dispersion predicted.

Generalized Manakov equation derived for multimode fibers.

Computer simulations support theoretical predictions.

Abstract

We derive the fundamental equations describing nonlinear propagation in multi-mode fibers in the presence of random mode coupling within quasi-degenerate groups of modes. Our result generalizes the Manakov equation describing mode coupling between polarizations in single-mode fibers. Nonlinear compensation of the modal dispersion is predicted and tested via computer simulations.