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Unidirectional manipulation of surface plasmon polariton by dual-nanocavity in a T-shaped waveguide

Gong, Yongkang, Liu, Xueming, Wang, Leiran and Zhang, Yani 2011. Unidirectional manipulation of surface plasmon polariton by dual-nanocavity in a T-shaped waveguide. Optics Communications 284 (3) , pp. 795-798. 10.1016/j.optcom.2010.09.074

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Abstract

A structure of two dimensional T-shaped metal–insulator–metal waveguide with dual-nanocavity is proposed. The two nanocavities located at each side of the slit on the lower metallic surface, act as band rejection filters and are capable of stopping the surface plasmon polaritons (SPPs) at the resonant wavelengths. The Fabry–Perot interferometry theory and the Finite-Difference–Time–Domain method are utilized to investigate the proposed waveguide. The numerical results demonstrate the realization of miniaturized photonic devices for effectively switching the SPPs propagation between the left and right waveguides in one direction.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Elsevier
ISSN: 0030-4018
Date of Acceptance: 28 September 2010
Last Modified: 18 Mar 2019 14:45
URI: http://orca.cf.ac.uk/id/eprint/119622

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