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Active Controllable Coded Terahertz Narrow Bandpass Filter Based on Vanadium Dioxide

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Abstract

An active controllable terahertz filter with dual narrowband characteristics is proposed, which consists of two n-shaped waveguides and one vanadium dioxide defect. The simulation results show that at the resonance frequencies of 1.287 THz and 1.447 THz, the 3 dB bandwidth are 13 GHz and 3 GHz, the transmittance are 83% and 91%, and the Q value are 99.5 and 482, respectively. It has good frequency selection performance. In addition, by changing the temperature, vanadium dioxide can be converted between the metal state and the insulating state, and the two states are binary coded. At 1.287 THz and 1.447 THz, the switching function between passband and stopband can be realized. The presented filter can be used for temperature control switches in integrated photonic circuits.

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Data Availability

The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This project is supported by the State Key Program of National Natural Science of China under Grant No. 61631007, the Nation Key Research and Development Program of China under Grant No.2019YFA0405403, the Lanzhou University Innovation and Entrepreneurship Project under Grant No. cxcy202002.

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Authors and Affiliations

  1. Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, No.222, South Tianshui Road, Lanzhou, Gansu Province, 730000, P.R. China

    Zonge Che, Guanmao Zhang, Juan Yue, Zhihang Li, Yupeng Lun, Junhong Suo, Panpan Ren, Jingci Zhu, Qian Zhang & Yinhai Feng

Authors
  1. Zonge Che
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  2. Guanmao Zhang
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  3. Juan Yue
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  4. Zhihang Li
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  5. Yupeng Lun
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  6. Junhong Suo
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  7. Panpan Ren
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  8. Jingci Zhu
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  9. Qian Zhang
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  10. Yinhai Feng
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Contributions

All authors contributed to the study conception and design. The first draft of the manuscript was written by Zonge Che and all authors commented on previous versions of the manuscript. All authors participated in the detailed revision of the revised draft and approved the final manuscript.

Corresponding author

Correspondence to Guanmao Zhang.

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Che, Z., Zhang, G., Yue, J. et al. Active Controllable Coded Terahertz Narrow Bandpass Filter Based on Vanadium Dioxide. Plasmonics 16, 2269–2276 (2021). https://doi.org/10.1007/s11468-021-01486-7

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  • DOI: https://doi.org/10.1007/s11468-021-01486-7

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