| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Design and theoretical study of a polarization-insensitive multiband terahertz metamaterial bandpass filter |
| Hai-Peng Li(李海鹏), Wen-Yue Fu(付文悦), Xiao-Peng Shen(沈晓鹏), Kui Han(韩奎), Wei-Hua Wang(王伟华) |
| School of Physical Science and Technology, China University of Mining and Technology, Xuzhou 221116, China |
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Abstract We report the design of a novel multiband metamaterial bandpass filter (BPF) in the terahertz (THz)-wave region. The designed BPF is composed of a metal-dielectric-metal sandwiched structure with three nested rings on the top surface and a cross structure on the bottom surface. Full-wave simulation results show that the designed BPF has three transmission peaks at frequencies of 0.42, 1.27, and 1.86 THz with transmission rates of-0.87,-1.85, and-1.83 dB, respectively. Multi-reflection interference theory is introduced to explain the transmission mechanism of the designed triple-band BPF. The theoretical transmission spectrum is in good agreement with the full-wave simulated results. The designed BPF can maintain a stable performance as the incident angle varies from 0° to 30° for both transverse electric and transverse magnetic polarizations of the incident wave. The designed BPF can be potentially used in THz devices due to its multiband transmissions, polarization insensitivity, and stable wide-angle response in the THz region.
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Received: 14 May 2017
Revised: 06 July 2017
Accepted manuscript online:
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PACS:
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78.67.Pt
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(Multilayers; superlattices; photonic structures; metamaterials)
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42.25.Bs
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(Wave propagation, transmission and absorption)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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78.20.Bh
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(Theory, models, and numerical simulation)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11504418, 11447033, and 61372048) and the Fundamental Research Funds for the Central Universities, China (Grant No. 2015XKMS075). |
Corresponding Authors:
Hai-Peng Li
E-mail: haipli@cumt.edu.cn
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Cite this article:
Hai-Peng Li(李海鹏), Wen-Yue Fu(付文悦), Xiao-Peng Shen(沈晓鹏), Kui Han(韩奎), Wei-Hua Wang(王伟华) Design and theoretical study of a polarization-insensitive multiband terahertz metamaterial bandpass filter 2017 Chin. Phys. B 26 127801
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