Semi-discrete solitons in arrayed waveguide structures with Kerr nonlinearity

TL;DR

This paper introduces families of semi-discrete optical solitons in waveguide arrays with Kerr nonlinearity, analyzing their stability, types, and potential for beam steering applications.

Contribution

It constructs and characterizes new semi-discrete soliton solutions supported by waveguide structures with cubic nonlinearity, including stability analysis and motion properties.

Findings

Stable odd SDCSs identified

Three species of SDCSs characterized

Transverse motion enables beam steering

Abstract

We construct families of optical semi-discrete composite solitons (SDCSs), with one or two independent propagation constants, supported by a planar slab waveguide, XPM-coupled to a periodic array of stripes. Both structures feature the cubic nonlinearity and support intrinsic modes with mutually orthogonal polarizations. We report three species of SDCSs, odd, even, and twisted ones, the first type being stable. Transverse motion of phase-tilted solitons, with potential applications to beam steering, is considered too.