Stabilization of spatiotemporal solitons in Kerr media by dispersive coupling

TL;DR

This paper proposes a novel stabilization mechanism for spatiotemporal solitons in Kerr media using dispersive coupling, significantly enhancing soliton stability and revealing effects on bound state formation.

Contribution

Introduction of a dispersive coupling mechanism to stabilize spatiotemporal solitons in Kerr nonlinear media, a novel approach in soliton control.

Findings

Dispersive coupling stabilizes otherwise unstable solitons.

Dispersive coupling influences formation of bound states.

Complete stabilization achieved in focusing Kerr media.

Abstract

We introduce a mechanism to stabilize spatiotemporal solitons in Kerr nonlinear media, based on the dispersion of linear coupling between the field components forming the soliton states. Specifically, we consider solitons in a two-core guiding structure with inter-core coupling dispersion (CD). We show that CD profoundly affects properties of the solitons, causing the complete stabilization of the otherwise highly unstable spatiotemporal solitons in Kerr media with focusing nonlinearity. We also find that the presence of CD stimulates the formation of bound states, which however are unstable.