Multiband Vector Plasmonic Lattice Solitons

TL;DR

This paper predicts and demonstrates the existence of multiband vector plasmonic lattice solitons in metal-dielectric waveguide arrays, highlighting their diffractionless propagation, subwavelength size, and effects of metallic losses.

Contribution

It introduces the concept of multiband vector plasmonic lattice solitons and uses full nonlinear Maxwell simulations to analyze their properties.

Findings

Vector PLSs propagate without diffraction

Subwavelength size of solitons confirmed

Metallic losses impact propagation characteristics

Abstract

We predict multiband vector Plasmonic Lattice Solitons (PLSs) in metal-dielectric waveguide arrays, in both focusing and defocusing nonlinearities. Such vector solitons consist of two components originating from different transmission bands. By simulating the full nonlinear Maxwell equations (MEs), we demonstrate the diffractionless propagation of vector PLSs and their discrete diffraction when only one component is present. Their subwavelength size characteristics and the influences of metallic losses are also studied.