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Terahertz narrow bandstop, broad bandpass filter using double-layer S-shaped metamaterials

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Abstract

In this study, double-layer S-shaped metamaterials (MMs) are analyzed by terahertz time-domain spectroscopy. These materials exhibit narrow bandstop and broad bandpass transmission properties at both horizontal and vertical electric-field polarizations. A 117% increase in the unloaded quality factor is experimentally observed for these materials. The center frequency is approximately 0.45 THz, with a 3-dB bandwidth of 0.52 THz from 0.20 to 0.72 THz at normal incidence. The measured average insertion loss is 0.5 dB with a ripple of 1 dB. These results show that double-layer S-shaped MMs are effective in designing tunable terahertz devices.

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Authors and Affiliations

  1. College of Optoelectronics Engineering, Zaozhuang University, Zaozhuang, 277160, China

    LanJu Liang

  2. Research Institute of Superconductor Electronics (RISE), School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China

    LanJu Liang, BiaoBing Jin, JingBo Wu, GaoChao Zhou, YongGang Zhang, XueCou Tu, Tao Jia, XiaoQing Jia, ChunHai Cao, Lin Kang, WeiWei Xu & Jian Chen

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  1. LanJu Liang
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  2. BiaoBing Jin
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Correspondence to BiaoBing Jin.

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Liang, L., Jin, B., Wu, J. et al. Terahertz narrow bandstop, broad bandpass filter using double-layer S-shaped metamaterials. Sci. China Inf. Sci. 56, 1–7 (2013). https://doi.org/10.1007/s11432-013-5034-z

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  • DOI: https://doi.org/10.1007/s11432-013-5034-z

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