Supercontinuum generation with bright and dark solitons in optical fibers

TL;DR

This paper investigates supercontinuum generation in optical fibers involving both dark and bright solitons, revealing a novel trapped radiation phenomenon and demonstrating strong agreement between theory and experiment.

Contribution

It introduces a new type of weak trapped radiation caused by bright and dark soliton interactions, advancing understanding of spectral broadening mechanisms.

Findings

Discovery of weak trapped radiation due to soliton interactions

Spectral broadening with shifting short and long wavelength limits

Good agreement between experimental and theoretical results

Abstract

We study numerically and experimentally supercontinuum generation in optical fibers with dark and bright solitons simultaneously contributing into the spectral broadening and dispersive wave generation. We report a novel type of weak trapped radiation arising due to interaction of bright solitons with the dark soliton background. This radiation expresses itself as two pulses with the continuously shifting spectra constituting the short and long wavelength limits of the continuum. Our theoretical and experimental results are in good agreement.