Solitons in thermal media with periodic modulation of linear refractive index

TL;DR

This paper investigates the existence, properties, and dynamics of solitons in thermal media with periodically modulated linear refractive index, revealing various soliton types and their behaviors under different conditions.

Contribution

It introduces new findings on solitons in thermal media with periodic refractive index modulation, including the absence of cutoff values and stable propagation of shifted solitons.

Findings

Existence of symmetric and antisymmetric solitons in optical lattices.

No cutoff value for propagation constant and soliton power in shifted lattices.

Shifted solitons can propagate without oscillation under strong lattice confinement.

Abstract

We address the existence and properties of solitons in thermal media with periodic modulation of linear refractive index. Many kinds of solitons in such optical lattices, including symmetric and antisymmetric lattices, are found under different conditions. We study the influence of the refractive index difference between two different layers on solitons. It is also found that there do not exist cutoff value of propagation constant and soliton power for shifted lattice solitons. In addition, the solitons launched away from their stationary position may propagate without oscillation when the confinement from lattices is strong.