Observation of Aulter–Townes splitting in subwavelength grating metamaterial ring resonators

Subwavelength grating metamaterial (SGM) waveguide is typically treated as a homogeneous medium without considering intra-waveguide reflection. However, this approximation is not always valid, especially in resonators. In this paper, we show that the reflection-induced mutual coupling between the cl...

Full description

Saved in:
Bibliographic Details
Published in:APL photonics 2023-01, Vol.8 (1), p.016102-016102-6
Main Authors: Li, Wanxin, Li, Jiewen, Yu, Lin, Feng, Yang, Yao, Yong, Sun, Yunxu, Zou, Yi, Xu, Xiaochuan
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Subwavelength grating metamaterial (SGM) waveguide is typically treated as a homogeneous medium without considering intra-waveguide reflection. However, this approximation is not always valid, especially in resonators. In this paper, we show that the reflection-induced mutual coupling between the clock-wise and counter-clock-wise resonant modes in a subwavelength grating metamaterial waveguide ring resonator (SGMRR) breaks the degeneracy of the two modes, leading to the formation of Autler–Townes splitting. This phenomenon could be leveraged to improve the detection limit of SGMRR-based sensors.
ISSN:2378-0967
2378-0967
DOI:10.1063/5.0122472