Dispersive wave emission in dual concentric core fiber: the role of soliton-soliton collisions

TL;DR

This paper investigates how soliton collisions in dual concentric core fibers enhance dispersive wave emission, providing an analytical model and experimental validation of spectral effects caused by in-phase soliton interactions.

Contribution

The study introduces a simple analytical model to predict dispersive wave characteristics resulting from soliton collisions in dual concentric core fibers, supported by experimental testing.

Findings

In-phase soliton collisions significantly boost dispersive wave power.

The analytical model accurately predicts spectral position, width, and amplitude.

Experimental results confirm the model's predictions in microstructured fibers.

Abstract

Soliton-soliton collisions have a crucial role in enhancing the spectrum of dispersive waves in optical fibers and collisions among in-phase solitons lead to a dramatic enhancement of the dispersive wave power, as well as to its significant spectral reshaping. We obtained a simple analytical model to estimate the spectral position, width and amplitude of the dispersive waves induced by a collision of two in-phase solitons. We tested our theory in the case of a dual concentric core microstructured fiber.