Resonant mode flopping in modulated waveguiding structures

TL;DR

This paper introduces a novel concept of resonant mode flopping in modulated waveguides, demonstrating controlled light mode transitions in both linear and nonlinear regimes, applicable to simple and complex structures.

Contribution

It presents the first demonstration of Rabi-like mode transitions in multimode waveguides, expanding understanding of light control in complex photonic structures.

Findings

Mode transitions occur in both linear and nonlinear regimes.

Transitions are possible in simple and complex geometries.

Analogous to quantum state transitions.

Abstract

We put forward the concept of resonant, Rabi-like flopping and adiabatic transitions between confined light modes in properly modulated multimode waveguides. The phenomenon is shown to take place in both, the linear and the nonlinear regimes. In addition, we find that the mode transitions occur not only in simple geometries, but also in complex confining multimode structures. The phenomenon is analogous to the familiar stimulated state transitions that occur in multilevel quantum systems.