Issue Eur. Phys. J. Appl. Phys. Volume 47, Number 1, July 2009 4th Colloquium Interdisciplinary in Instrumentation (C2I) Article Number 10501 Number of page(s) 5 Section Surfaces, Interfaces and Films DOI 10.1051/epjap/2009069 Published online 22 April 2009

Eur. Phys. J. Appl. Phys. 47, 10501 (2009)
DOI: 10.1051/epjap/2009069

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

L.W. Zhang^{1, 2}, G.Q. Du^{3, 2}, J.P. Xu², Z.G. Wang² and Y.W. Zhang<sup>2

1</sup>  School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, P.R. China
²  Pohl Institute of Solid State Physics, Tongji University, Shanghai 200092, P.R. China
³  School of Space Science and Physics, Shandong University at Weihai, Weihai 264209, P.R. China

zlwted@hotmail.com

Received: 25 October 2008 / Received in final form: 4 February 2009 / Accepted: 5 March 2009 / Published online: 22 April 2009

Abstract
Double-channeled omnidirectional filtering properties are found in the sandwich structure composed of a -negative layer and a -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.

PACS
41.20.Jb - Electromagnetic wave propagation; radiowave propagation.
78.68.+m - Optical properties of surfaces.
78.20.Ci - Optical constants.

© EDP Sciences 2009

What is OpenURL?