Journal
OPTIK
Volume 126, Issue 5, Pages 541-544Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2015.01.006
Keywords
Complementary metamaterial; Electromagnetically induced transparency; Sensor
Categories
Funding
- Research Project for Basic & Forefront Technology of Henan Province, China [132300410301]
- Key Research Project for Science and Technology of the Education Department of Henan Province, China [13B430181]
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In this paper, a classical analogue of electromagnetically induced transparency (EIT) is demonstrated theoretically in a planar complementary nietamaterial consisting of a short slot as bright resonator and a long slot as dark resonator in a thin sliver film. A sharp and narrow reflectance transparency window is observed within a broad absorption spectrum at optical frequencies when structural symmetry is broken. Furthermore, the transparency peak exhibits highly sensitive response to the refractive index of surrounding medium, ensuring our proposed metamaterial as an excellent plasmonic sensor. The dependence of figure of merit (FOM) on structural asymmetry is investigated numerically to optimize the sensing performance of the EIT-based sensor. (C) 2015 Elsevier GmbH. All rights reserved.
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