Electromagnetically induced transparency like transmission in a metamaterial composed of cut-wire pairs with indirect coupling

Yasuhiro Tamayama, Kanji Yasui, Toshihiro Nakanishi, and Masao Kitano
Phys. Rev. B 89, 075120 – Published 18 February 2014

Abstract

We theoretically and numerically investigate metamaterials composed of coupled resonators with indirect coupling. First, we theoretically analyze a mechanical model of coupled resonators with indirect coupling. The theoretical analysis shows that an electromagnetically induced transparency (EIT)-like phenomenon with a transparency bandwidth narrower than the resonance linewidths of the constitutive resonators can occur in the metamaterial with strong indirect coupling. We then numerically examine the characteristics of the metamaterial composed of coupled cut-wire pairs using a finite-difference time-domain (FDTD) method. The FDTD simulation confirms that an EIT-like transparency phenomenon occurs in the metamaterial owing to indirect coupling. Finally, we compare the results of the theoretical and numerical analyses. The behavior of the EIT-like metamaterial is found to be well described by the mechanical model of the coupled resonators.

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  • Received 21 October 2013
  • Revised 22 January 2014

DOI:https://doi.org/10.1103/PhysRevB.89.075120

©2014 American Physical Society

Authors & Affiliations

Yasuhiro Tamayama1,*, Kanji Yasui1, Toshihiro Nakanishi2, and Masao Kitano2

  • 1Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
  • 2Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan

  • *tamayama@vos.nagaokaut.ac.jp

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Vol. 89, Iss. 7 — 15 February 2014

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