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Volume 10
Issue 7
10.3390/photonics10070816
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Article

Terahertz Metamaterial Waveguide with I-Shaped Resonators for Phase and Absorption Modulation

by
Bo Yu
1,
Jie Yang
2,
Yexi Song
2,
Zhigang Wang
1,*,
Tiedi Zhang
1,
Bo Yan
1,* and
Ruimin Xu
1
1
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
2
Sichuan Jiuzhou Electric Group Co., Ltd., Mianyang 621000, China
*
Authors to whom correspondence should be addressed.
Photonics 2023, 10(7), 816; https://doi.org/10.3390/photonics10070816
Submission received: 20 June 2023 / Revised: 7 July 2023 / Accepted: 11 July 2023 / Published: 13 July 2023
(This article belongs to the Special Issue Terahertz Transmission and Imaging)
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Abstract

In terahertz communication systems, amplifiers and other components can induce non-linear distortion in terms of amplitude and phase, resulting in system performance degradation. This paper presents a terahertz metamaterial waveguide to mitigate amplitude and phase distortions in some terahertz systems. A simple method based on free-space analysis is proposed for designing metamaterial waveguides in an enclosed space. The quasi-periodic metamaterial structures, which feature I-shaped resonant patterns, are integrated onto the inner walls of rectangular waveguides. The phase and amplitude of electromagnetic waves within the waveguide can be modulated by varying the dimensions and number of these resonators. Utilizing the effective medium theory and the equivalent circuits, the metamaterial waveguide’s phase and absorption modulation mechanisms are analyzed. Based on the proposed structure, a metamaterial waveguide with I-shaped resonators is designed and fabricated, and its abilities to modulate the phase and absorption of terahertz waves around 0.2 THz are demonstrated.
Keywords: metamaterials; waveguides; I-shaped resonators; absorption; phase metamaterials; waveguides; I-shaped resonators; absorption; phase

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MDPI and ACS Style

Yu, B.; Yang, J.; Song, Y.; Wang, Z.; Zhang, T.; Yan, B.; Xu, R. Terahertz Metamaterial Waveguide with I-Shaped Resonators for Phase and Absorption Modulation. Photonics 2023, 10, 816. https://doi.org/10.3390/photonics10070816

AMA Style

Yu B, Yang J, Song Y, Wang Z, Zhang T, Yan B, Xu R. Terahertz Metamaterial Waveguide with I-Shaped Resonators for Phase and Absorption Modulation. Photonics. 2023; 10(7):816. https://doi.org/10.3390/photonics10070816

Chicago/Turabian Style

Yu, Bo, Jie Yang, Yexi Song, Zhigang Wang, Tiedi Zhang, Bo Yan, and Ruimin Xu. 2023. "Terahertz Metamaterial Waveguide with I-Shaped Resonators for Phase and Absorption Modulation" Photonics 10, no. 7: 816. https://doi.org/10.3390/photonics10070816

APA Style

Yu, B., Yang, J., Song, Y., Wang, Z., Zhang, T., Yan, B., & Xu, R. (2023). Terahertz Metamaterial Waveguide with I-Shaped Resonators for Phase and Absorption Modulation. Photonics, 10(7), 816. https://doi.org/10.3390/photonics10070816

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