Waveguide regimes in a pair of optically coupled non-Hermitian subwavelength structures

E. A. Efremova; I. R. Krylov; U. V. Prokhorova; E. V. Shalymov; V. I. Shoev; V. Yu. Venediktov; A. A. Zinchik

doi:10.1117/12.3036329

22 November 2024 Waveguide regimes in a pair of optically coupled non-Hermitian subwavelength structures

E. A. Efremova, I. R. Krylov, U. V. Prokhorova, E. V. Shalymov, V. I. Shoev, V. Yu. Venediktov, A. A. Zinchik

Proceedings Volume 13240, Holography, Diffractive Optics, and Applications XIV; 1324008 (2024) https://doi.org/10.1117/12.3036329
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China

Abstract

This work is devoted to studying the efficiency of excitation and support of waveguide modes for a non-Hermitian optical system consisting of two thin optically coupled subwavelength periodic structures. Excitation modes of various modes were studied depending on the angle of incidence of the exciting field for the visible and near-IR ranges for TE and TM polarizations. The possibilities of excitation of single-mode regimes with high field localization in thin subwavelength structures, as well as regime of hybridization modes, have been studied. The excitation modes of the unidirectional waveguide mode, when linearly polarized light (TM) is incident on an optically coupled system of two subwavelength periodic structures, have been separately studied. We analyzed the Q-factors for various permittivity modulation profiles, as well as the features of the eigenstates of the system under consideration, and studied the behavior of the system near exceptional points, which can be effectively used to control the switching of waveguide modes. Research was carried out, in particular, for AlGaAs/GaAs lattices, for which a decrease in the thickness of the active region leads to a decrease in the optical confinement factor and a decrease in the lasing threshold.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

E. A. Efremova, I. R. Krylov, U. V. Prokhorova, E. V. Shalymov, V. I. Shoev, V. Yu. Venediktov, and A. A. Zinchik "Waveguide regimes in a pair of optically coupled non-Hermitian subwavelength structures", Proc. SPIE 13240, Holography, Diffractive Optics, and Applications XIV, 1324008 (22 November 2024); https://doi.org/10.1117/12.3036329

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Optical transmission

Optical gratings

Refractive index

Reflection

Waveguides

Waveguide modes

Magnetism

Show All Keywords

Keywords/Phrases

Search In:

Publication Years