Reflection, Transmission and Trapping Dynamics of Lattice Solitons at Interfaces

TL;DR

This paper investigates how lattice solitons behave at interfaces between different periodic media, revealing reflection, transmission, and trapping phenomena analogous to linear optics, with potential applications in spatial filtering.

Contribution

It introduces an effective particle approach to analyze surface soliton dynamics at media interfaces, highlighting power-dependent effects and potential filtering functionalities.

Findings

Global reflection, transmission, and trapping characteristics analogous to Snell's laws.

Power-dependent formation of potential barriers and wells.

Potential for spatial filtering applications.

Abstract

Surface soliton formation and lattice soliton dynamics at an interface between two inhomogeneous periodic media are studied in terms of an effective particle approach. The global reflection, transmission and trapping characteristics are obtained in direct analogy to linear Snell's laws for homogeneous media. Interesting dynamics related to soliton power-dependent formation of potential barriers and wells suggest spatial filtering functionality of the respective structures.