Multiple quasi-phase matched resonant radiations induced by modulation instability in dispersion oscillating fibers

TL;DR

This paper investigates how modulation instability in dispersion oscillating fibers leads to multiple resonant radiations, combining numerical simulations and experiments to understand their spectral positions.

Contribution

It demonstrates the generation of multiple resonant radiations due to periodic dispersion variations, validated by both experiments and perturbation theory.

Findings

Multiple resonant radiations are emitted on both spectral sides.

The positions of radiations are accurately predicted by perturbation theory.

Experimental and numerical results are in strong agreement.

Abstract

The propagation of a continuous wave in the average anomalous dispersion region of a dispersion oscillating fiber is investigated numerically and experimentally. We demonstrate that the train of solitons arising from modulation instability is strongly affected by the periodic variations of the fiber dispersion. This leads to the emission of multiple resonant radiations located on both sides of the spectrum. Numerical simulations confirm the experimental results and the position of the resonant radiations is well predicted by means of perturbation theory.