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A metamaterial terahertz modulator based on complementary planar double-split-ring resonator

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Abstract

A metamaterial based on complementary planar double-split-ring resonator (DSRR) structure is presented and demonstrated, which can optically tune the transmission of the terahertz (THz) wave. Unlike the traditional DSRR metamaterials, the DSRR discussed in this paper consists of two split rings connected by two bridges. Numerical simulations with the finite-difference time-domain (FDTD) method reveal that the transmission spectra of the original and the complementary metamaterials are both in good agreement with Babinet’s principle. Then by increasing the carrier density of the intrinsic GaAs substrate, the magnetic response of the complementary special DSRR metamaterial can be weakened or even turned off. This metamaterial structure is promised to be a narrow-band THz modulator with response time of several nanoseconds.

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Authors and Affiliations

  1. Key Laboratory of Optical Information Science and Technology of the Education Ministry of China, Institute of Modern Optics, Nankai University, Tianjin, 300071, China

    Chang-hui Wang  (王昌辉), Deng-feng Kuang  (匡登峰), Sheng-jiang Chang  (常胜江) & Lie Lin  (林列)

Authors
  1. Chang-hui Wang  (王昌辉)
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  2. Deng-feng Kuang  (匡登峰)
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  3. Sheng-jiang Chang  (常胜江)
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  4. Lie Lin  (林列)
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Corresponding author

Correspondence to Sheng-jiang Chang  (常胜江).

Additional information

This work has been supported by the National High Technology Research and Development Program of China (No.2011AA010205), the National Natural Science Foundation of China (Nos.61171027, 10904076 and 11274186), the Natural Science Foundation of Tianjin of China (No.10JCZDJC152000), and the Doctoral Fund of Ministry of Education of China (No.20090031110033).

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Wang, Ch., Kuang, Df., Chang, Sj. et al. A metamaterial terahertz modulator based on complementary planar double-split-ring resonator. Optoelectron. Lett. 9, 266–269 (2013). https://doi.org/10.1007/s11801-013-3041-3

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  • DOI: https://doi.org/10.1007/s11801-013-3041-3

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