Broadband extraordinary transmission device realized with dielectrics

Author

Bao, Di ; Rajab, Khalid Z. ; Tang, Wenxuan ; Hao, Yang

Author_Institution

Dept. of Electron. Eng., Queen Mary, Univ. of London, London, UK

fYear

2011

fDate

11-15 April 2011

Firstpage

2197

Lastpage

2200

Abstract

A simplified all-dielectric extraordinary transmission (ET) device is designed based on coordinate optical transformation and demonstrated experimentally in this paper. Instead of metamaterials, commercially isotropic dielectrics with dielectric constant value ranging from 2.1 to 6 are adopted to fabricate the ET device. It is shown both numerically and experimentally that the device can provide transmission with the -3 dB bandwidth of more than 1 GHz, in a region which would otherwise be a stop band by the subwavelength aperture in an X-band waveguide. Simulation results demonstrate that the device can work in free space as well.

Keywords

dielectric devices; dielectric materials; metamaterials; permittivity; waveguides; X-band waveguide; all-dielectric extraordinary transmission; broadband extraordinary transmission device; coordinate optical transformation; dielectric constant; isotropic dielectrics; subwavelength aperture; Apertures; Broadband communication; Dielectrics; Metamaterials; Optical waveguides; Permittivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on

Conference_Location

Rome

Print_ISBN

978-1-4577-0250-1

Type

conf

Filename

5782008