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Multi-peak electromagnetically induced transparency (EIT)-like transmission from bull's-eye-shaped metamaterial
Jaeyoun Kim1, Richard Soref, Walter R Buchwald
1Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, USA. plasmon@iastate.edu
Abstract:
We investigate the electromagnetic response of the concentric multi-ring, or the bull's eye, structure as an extension of the dual-ring metamaterial which exhibits electromagnetically-induced transparency (EIT)-like transmission characteristics. Our results show that adding inner rings produces additional EIT-like peaks, and widens the metamaterial's spectral range of operation. Analyses of the dispersion characteristics and induced current distribution further confirmed the peak's EIT-like nature. Impacts of structural and dielectric parameters are also investigated.
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