All-Lossy Quasi-Guided Dual-Mode Optical Waveguide Exhibiting Exceptional Singularities

TL;DR

This paper investigates exceptional points in a dual-mode optical waveguide with inhomogeneous loss, demonstrating modal evolution and selective mode conversion, advancing understanding of non-Hermitian photonic systems.

Contribution

It introduces a novel dual-mode waveguide design exhibiting exceptional points with inhomogeneous loss, enabling controlled mode conversion.

Findings

Identification of exceptional points in the waveguide

Demonstration of modal evolution near EPs

Potential for selective optical mode conversion

Abstract

We explore exceptional points (EP) in a dual-mode symmetric planar optical waveguide with transverse variation of inhomogeneous loss profile; where modal evolution alongside an EP is reported in the context of selective optical mode conversion.