Open AccessTunable Perfect Meta‐Absorber with High‐Sensitive Polarization Characteristic
Author(s) -
Wen Yao,
Liang Zhaokang,
Lin Yu-Sheng
Publication year - 2021
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202000027
Subject(s) - materials science , resonator , polarization (electrochemistry) , optoelectronics , capacitive sensing , attenuation , dipole , optics , physics , chemistry , electrical engineering , engineering , quantum mechanics
A tunable perfect meta‐absorber (PMA) composed of an electric split‐ring resonator (eSRR) and a cross‐shaped nanostructure is proposed. Owing to the electromagnetic coupling effect generated between dipole and inductive–capacitive ( LC ) resonances, the PMA exhibits perfect absorption, tunable resonance, variable optical attenuation, and switchable polarization‐dependence/independence characteristics. Furthermore, the PMA is demonstrated to be feasible for sensing applications. The PMA exhibits high sensing performance with a sensitivity of 1200 nm/RIU. Such results indicate that the proposed PMA can be used in variable optical attenuators, polarization switches, tunable absorbers, and sensors applications.