Gap solitons and symmetry breaking in parity-time symmetric microring CROWs

TL;DR

This paper investigates the behavior of optical fields in parity-time symmetric microring resonator waveguides, revealing symmetry breaking thresholds, gap soliton propagation, and quasi-stable regimes in nonlinear optical systems.

Contribution

It introduces the study of gap solitons and symmetry breaking phenomena in PT-symmetric microring CROWs, highlighting new nonlinear propagation effects.

Findings

Existence of symmetry breaking thresholds.

Propagation of gap solitons in nonlinear regimes.

Quasi-stable propagation outside broken symmetry regions.

Abstract

The propagation properties of optical fields in linear and nonlinear parity-time symmetric microring coupled resonator optical waveguides are studied. The effects described include the existence of symmetry breaking thresholds, the propagation of gap solitons in nonlinear transmission lines and the existence of quasi stable propagation regimes outside the broken symmetry regions.