Soliton interaction mediated by cascaded four wave mixing with dispersive waves

TL;DR

This paper investigates how dispersive waves interact with optical solitons through cascaded four-wave mixing, leading to soliton attraction and collision, with control over the radiation spectrum during propagation.

Contribution

It demonstrates a novel mechanism of soliton interaction mediated by resonant scattering of dispersive waves, enabling control over soliton dynamics and radiation spectrum.

Findings

Dispersive waves can be trapped between solitons via resonant scattering.

Momentum transfer causes solitons to attract and collide.

The radiation spectrum can be manipulated during propagation.

Abstract

We demonstrate that trapping of dispersive waves between two optical solitons takes place when resonant scattering of the waves on the solitons leads to nearly perfect reflections. The momentum transfer from the radiation to solitons results in their mutual attraction and a subsequent collision. The spectrum of the trapped radiation can either expand or shrink in the course of the propagation, which is controlled by arranging either collision or separation of the solitons.