Design of two-dimensional photonic crystal structure based in all-angle negative refractive effect for application in focusing systems

Author

Belhadj, W. ; Gamra, D. ; AbdelMalek, F. ; Haxha, S. ; Bouchriha, H.

Author_Institution

Nat. Inst. of Appl. Sci. & Technol., Tunis

Volume

1

Issue

2

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

91

Lastpage

95

Abstract

A design of a polarisation independent focusing system of electromagnetic waves in a two-dimensional photonic crystal (PC) is proposed and numerically demonstrated by using the finite-difference time-domain method. We have shown that by the careful selection of both the refractive index of the high index material and the air cylinder radius, a complete all-angle negative refraction can be obtained for both the transverse electric (TE) and the transverse magnetic (TM) polarisations. We have demonstrated that the proposed PC structures can focus either the TE or the TM or both TE and TM polarised waves with sub-wavelength resolution. In addition, a significant improvement of the image resolution has been presented

Keywords

finite difference time-domain analysis; image resolution; light polarisation; light refraction; optical focusing; photonic crystals; refractive index; all-angle negative refractive effect; finite-difference time-domain method; focusing systems; high index material; image resolution; negative refraction; refractive index; transverse electric polarisation; transverse magnetic polarisation; two-dimensional photonic crystal;

fLanguage

English

Journal_Title

Optoelectronics, IET

Publisher

iet

ISSN

1751-8768

Type

jour

DOI

10.1049/iet-opt:20060057

Filename

4159944