한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)

한국진공학회 (The Korean Vacuum Society)
권호 표지

Controllable electromagnetically-induced transparency-like response in a bilayer metamaterial

  • Hwang, J.S. (Dept. of Physics, Hanyang University) ;
  • Yoo, Y.J. (Dept. of Physics, Hanyang University) ;
  • Kim, Y.J. (Dept. of Physics, Hanyang University) ;
  • Kim, K.W. (Dept. of Information Display, Sunmoon University) ;
  • Rhee, J.Y. (Institute of Basic Sciences and Dept. of Physics, Sungkyunkwan University) ;
  • Park, S.Y. (Advanced Institutes of Convergence Technology, Seoul National University) ;
  • Lee, Y.P. (Dept. of Physics, Hanyang University)
  • 발행 : 2015.08.24
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초록

Recently, the electromagnetically-induced transparency (EIT)-like effect in metamaterials has attracted enormous interest. Metamaterial analogs of EIT enable promising applications in slow-light devices, low-loss metamaterial, quantum optics, and novel sensors. In this work, we experimentally and numerically studied a bilayer metamaterial for controllable EIT-like spectral response at microwave frequencies. Bilayer metamaterial consists of two snake-shape resonators (SSRs) with one and two bars. The transmission spectra were measured in a frequency range of 4 - 8 GHz in an anechoic chamber at normal incidence. It is found that two SSRs in the metamaterial are activated in bright modes, and the coupling between two bright modes leads to the EIT-like effect, which results in the enhanced transmission at 5.61 GHz. Furthermore, we confirm that the EIT-like feature could be controlled by adjusting the geometric parameters of metamaterial structure. Our work provides a way to tunable EIT-like effect and various potential applications including filters, sensors, and other microwave devices.

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