Work

N -order generalized-temporal coupled mode theory (g-TCMT) model: extending the spectral range for arbitrary coupling of optical resonators and application in Parity-Time (PT) symmetry

Year: 2024

Type: article

Abstract: We propose an N-order generalized temporal coupled mode theory (g-TCMT) model, which provides spectral analysis over a wider range for coupled optical resonators with arbitrary coupling coefficients. Using an exemplar system of two, serially coupled micro-ring resonators (MRRs), we demonstrate excellent agreement with the conventional transfer matrix method (TMM). In contrast with the conventional TCMT model, the g-TCMT predicts the existence of a second exceptional point (EP) within a single free spectral range (FSR) for a coupled MRR system with balanced gain and loss, i.e., exhibiting Parity-Time (PT) symmetry.

Source: Optics Express

DOI: 10.1364/oe.544255

Authors: Tianrui Li, Matthew P. Halsall, Iain F. Crowe

Language: English

Topic: Quantum Mechanics and Non-Hermitian Physics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Engineering and Physical Sciences Research Council