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Double-channeled omnidirectional filtering properties of the sandwich structures composed of single-negative materials

Published online by Cambridge University Press:  22 April 2009

L. W. Zhang ,
G. Q. Du ,
J. P. Xu ,
Z. G. Wang  and
Y. W. Zhang
L. W. Zhang*
Affiliation:
School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, P.R. China Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, P.R. China
G. Q. Du
Affiliation:
Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, P.R. China School of Space Science and Physics, Shandong University at Weihai, Weihai 264209, P.R. China
J. P. Xu
Affiliation:
Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, P.R. China
Z. G. Wang
Affiliation:
Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, P.R. China
Y. W. Zhang
Affiliation:
Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, P.R. China
*
zlwted@hotmail.com
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Abstract

Double-channeled omnidirectional filtering properties are found in the sandwich structure composed of a ε-negative layer and a μ-negative layer separated by another single-negative layer with either dielectric permittivity or magnetic permeability described by Lorentz model. The twin tunneling interface modes are generated by the excitation of surface polaritons. It is shown that the two tunneling modes are insensitive to the incidence angles and the polarizations. Furthermore, the tunneling frequency and the frequency interval of the two modes can be tuned by changing the resonance frequency and the thickness of the center layer respectively. The characteristics can be utilized to design double-channeled tunable omnidirectional filters using in microwave and optical engineering.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 47 , Issue 1: 4th Colloquium Interdisciplinary in Instrumentation (C2I 2007) , July 2009 , 10501
Copyright
© EDP Sciences, 2009

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