Switching management by adiabatic passage in two periodically modulated nonlinear waveguides

TL;DR

This paper explores how adiabatic passage techniques can control light switching in two nonlinear waveguides with periodic modulation, highlighting the role of detuning and nonlinear Floquet states.

Contribution

It introduces a method for light switching in nonlinear waveguides using adiabatic passage and analyzes the impact of detuning on propagation dynamics.

Findings

Light can be directed to a specific waveguide by adiabatic modulation.

Propagation dynamics are highly sensitive to detuning between guides.

Nonlinear Floquet states explain the observed control mechanisms.

Abstract

We theoretically investigate light propagation in two periodically modulated nonlinear waveguides with certain propagation constant detuning between two guides. By slowly varying the amplitude of modulation, we can steer the light to the desired output waveguide when equal amounts of lights are launched into each waveguide. We also reveal that the light propagation dynamics depends sensitively on the detuning between two guides. Our findings can be explained qualitatively by means of adiabatic navigation of the extended nonlinear Floquet states.