Polarization independent and angularly tunable high-Q filter using guided-mode resonance at high terahertz frequencies

Jiang Wei; Yan Miao; Youxin Chen; Kaiyu Wu; Qingkang Wang

Results in Physics (May 2024)

Polarization independent and angularly tunable high-Q filter using guided-mode resonance at high terahertz frequencies

Jiang Wei,
Yan Miao,
Youxin Chen,
Kaiyu Wu,
Qingkang Wang

Affiliations

Jiang Wei: National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Yan Miao: National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Youxin Chen: National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Kaiyu Wu: National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding authors.
Qingkang Wang: National Key Laboratory of Advanced Micro and Nano Manufacture Technology, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding authors.

Journal volume & issue: Vol. 60
p. 107658

Abstract

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Narrowband filtering with high Q factors, polarization independency and tunability at high THz frequencies is challenging. Here, combining guided mode resonance (GMR) and silicon on insulator (SOI) techniques, a narrowband filter with an experimental Q factor up to ∼ 450 at frequencies > 4 THz is presented. Its 90° structural symmetry leads to polarization independency and angular tunability of ∼ 56 GHz at an incidence angle of 7°. The filter has potential in various fields such as broadband communication, imaging and optical sensing.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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