Tunable plasmon-induced transparency with coupled L-shape graphene metamaterial

Shuxian Chen; Liang Zeng; Jiaqi Li; Jun Weng; Junyi Li; Zicong Guo; Pengbai Xu; Wenjie Liu; Jun Yang; Yuwen Qin; Kunhua Wen

doi:10.1016/j.rinp.2022.105537

Results in Physics (Jul 2022)

Tunable plasmon-induced transparency with coupled L-shape graphene metamaterial

Shuxian Chen,
Liang Zeng,
Jiaqi Li,
Jun Weng,
Junyi Li,
Zicong Guo,
Pengbai Xu,
Wenjie Liu,
Jun Yang,
Yuwen Qin,
Kunhua Wen

Affiliations

Shuxian Chen: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Liang Zeng: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Jiaqi Li: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Jun Weng: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Junyi Li: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Zicong Guo: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
Pengbai Xu: School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
Wenjie Liu: School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
Jun Yang: School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
Yuwen Qin: School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
Kunhua Wen: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China; Corresponding author.

DOI: https://doi.org/10.1016/j.rinp.2022.105537
Journal volume & issue: Vol. 38
p. 105537

Abstract

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A graphene-based metamaterial structure, consisting of a graphene strip (GS) and a L-shaped graphene-rectangular block (GRB), is proposed to generate the plasmon-induced transparency (PIT) effect. The potential physical properties of the PIT effect are analyzed by using the coupled mode theory (CMT). The PIT has the unique characteristics of controlling light propagation through the static and dynamic regulations, resulting in a prospective switching application. The performance of the optical switch is evaluated through different parameters, including the geometric size, Fermi level and polarization angle. The modulation depth of the amplitude can reach 74.9% with a specific Fermi level, while the maximum polarization extinction ratio can reach 11.34 dB. Furthermore, dual and triple PIT effects are achieved by the designing and optimizing the structure. The maximum multiple switching effect is obtained with a modulation depth of 97.3%, which has a promising prospect in terahertz optical switches.

Published in Results in Physics

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

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