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Optical Engineering

Plasmon-induced transparency effect in metal-insulator-metal waveguide coupled with multiple dark and bright nanocavities
Author(s): Yunbo Wang; Tao Wang; Xu Han; Youjiang Zhu; Boyun Wang
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Paper Abstract

We used bright and dark nanocavities coupled to a metal-insulator-metal waveguide to realize a plasmonic analogue of electromagnetically induced transparency (EIT) in integrated plasmonics. The bright nanocavity is directly coupled to the waveguide, while the dark nanocavity is achieved with the help of evanescent coupling. The numerical simulation shows a typical EIT-like line in the transmission spectrum. Using the model of EIT effect in a three-level atomic system, this phenomenon is well explained. Adding the number of dark nanocavities, we get multiple transparent peaks in the transmission spectrum of plasmon-induced transparency (PIT) effect, and we can realize control of the PIT effect by changing the geometric parameters of the plasmonic structure.

Paper Details

Date Published: 23 February 2016
PDF: 7 pages
Opt. Eng. 55(2) 027108 doi: 10.1117/1.OE.55.2.027108
Published in: Optical Engineering Volume 55, Issue 2
Show Author Affiliations
Yunbo Wang, Huazhong Univ. of Science and Technology (China)
Tao Wang, Huazhong Univ. of Science and Technology (China)
Xu Han, Huazhong Univ. of Science and Technology (China)
Youjiang Zhu, Huazhong Univ. of Science and Technology (China)
Boyun Wang, Huazhong Univ. of Science and Technology (China)


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