A 2-bit graphene encoder based on the plasmon-induced transparency effect and its sensing characteristics

Aijun Zhu; Zongteng Li; Weigang Hou; Xinghua Yang; Lei Cheng; Cong Hu; Fei Qiao; Rabi Mahapatra

Results in Physics (Apr 2024)

A 2-bit graphene encoder based on the plasmon-induced transparency effect and its sensing characteristics

Aijun Zhu,
Zongteng Li,
Weigang Hou,
Xinghua Yang,
Lei Cheng,
Cong Hu,
Fei Qiao,
Rabi Mahapatra

Affiliations

Aijun Zhu: Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of Electronic Technology, Guilin 541004, PR China; Shanxi Key Laboratory of Advanced Semiconductor Optoelectronic Devices and Integrated Systems, Shanxi, Jincheng, 048000, PR China
Zongteng Li: Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of Electronic Technology, Guilin 541004, PR China
Weigang Hou: Institute of Intelligent Communication and Network Security, Chongqing University of Posts and Telecommunications, Chongqing 400000, PR China; Corresponding authors.
Xinghua Yang: College of Science, Beijing Forestry University, Beijing 100083, PR China
Lei Cheng: Jincheng Research Institute of Opto-mechatronics Industry, Shanxi, Jincheng, 048000, PR China; Shanxi Key Laboratory of Advanced Semiconductor Optoelectronic Devices and Integrated Systems, Shanxi, Jincheng, 048000, PR China
Cong Hu: Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of Electronic Technology, Guilin 541004, PR China; Guangxi Key Laboratory of Brain-inspired Computing and Intelligent Chips, Guangxi Normal University, Guilin 541004, PR China; Corresponding authors.
Fei Qiao: Department of Electronic Engineering, Tsinghua University, Beijing 100084, PR China; Corresponding authors.
Rabi Mahapatra: Department of Computer Science and Engineering, Texas A&M University, College Station, TX 77843-3112, USA

Journal volume & issue: Vol. 59
p. 107608

Abstract

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A 2-bit encoder based on the plasmon-induced transparency (PIT) effect was proposed and investigated in the range from 2 to 7 THz. The Lorentz oscillation coupling model was utilized to confirm the simulation. By tuning the Fermi levels of cross1 and cross2, the 2-bit encoder was achieved. And the minimum MD was 94.73 %, the minimum ER was 12.77 dB, and the maximum IL was 0.32 dB. As a sensor, the structure had a sensitivity of up to 2.33 THz/RIU. In addition, due to the insensitivities to incidence angle and polarization angle, the encoder could be utilized to complex environments. Therefore, these results reveals that our work is significant in terahertz encoders, optical switches, sensors, slow light devices, and modulators.

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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