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A Tunable Eight-Wavelength Terahertz Modulator Based on Photonic Crystals

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Journal of Applied Spectroscopy Aims and scope

We propose a tunable eight-wavelength terahertz modulator based on a structure of triple triangular lattice photonic crystals by using photonic crystals in the terahertz regime. The triple triangular lattice was formed by nesting circular, square, and triangular dielectric cylinders. Three square point defects were introduced into the perfect photonic crystal to produce eight defect modes. GaAs was used as the point defects to realize tunability. We used a structure with a reflecting barrier to achieve modulation at high transmission rate. The insertion loss and extinction ratio were 0.122 and 38.54 dB, respectively. The modulation rate was 0.788 dB. The performance of the eightwavelength terahertz modulator showed great potential for use in future terahertz communication systems.

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Authors and Affiliations

  1. Nanjing University of Posts and Telecommunications, Nanjing, 210023, China

    K. Ji, H. Chen, W. Zhou, Y. Zhuang & J. Wang

Authors
  1. K. Ji
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  2. H. Chen
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  3. W. Zhou
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  4. Y. Zhuang
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  5. J. Wang
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Corresponding author

Correspondence to H. Chen.

Additional information

Published in Zhurnal Prikladnoi Spektroskopii, Vol. 84, No. 5, pp. 767–771, September–October, 2017.

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Ji, K., Chen, H., Zhou, W. et al. A Tunable Eight-Wavelength Terahertz Modulator Based on Photonic Crystals. J Appl Spectrosc 84, 824–828 (2017). https://doi.org/10.1007/s10812-017-0551-y

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  • DOI: https://doi.org/10.1007/s10812-017-0551-y

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