Coherence properties of light in highly multimoded nonlinear parabolic fibers under optical equilibrium conditions

TL;DR

This paper investigates how the coherence of light in nonlinear graded-index multimode fibers can be controlled via optical thermodynamic properties, focusing on the effects of optical temperature on coherence and correlation areas.

Contribution

It introduces a systematic study of the influence of optical temperature on coherence properties in nonlinear multimode fibers under equilibrium conditions.

Findings

Coherence properties are tunable through optical temperature.

Optical temperature affects the spatial mutual coherence function.

Correlation area varies with optical thermodynamic conditions.

Abstract

We study the coherence characteristics of light propagating in nonlinear graded-index multimode fibers after attaining optical thermal equilibrium conditions. The role of optical temperature on the spatial mutual coherence function and the associated correlation area is systematically investigated. In this respect, we show that the coherence properties of the field at the output of a multimode nonlinear fiber can be controlled through its optical thermodynamic properties.