Porous core photonic crystal fibre with metal-coated central hole for terahertz applications

Author

Muhammad, Muhammad H. ; Hameed, Mohamed Farhat O. ; Heikal, Ahmed M. ; Obayya, Salah S. A.

Author_Institution

Centre for Photonics & Smart Mater., Zewail City of Sci. & Technol., Giza, Egypt

Volume

9

Issue

2

fYear

2015

fDate

4 2015

Firstpage

37

Lastpage

42

Abstract

In this study, a novel design of porous octagonal photonic crystal fibre with a metal-coated central hole is investigated and analysed in the terahertz (THz) range. The suggested structure is analysed near a frequency of 1.0 THz by using the full vectorial finite difference method. The effects of the structure geometrical parameters and bending radius on the mode effective index, effective mode area and attenuation of the proposed design are investigated. The numerical results reveal that the effective mode area with a metal-coated central hole is smaller than that of porous core without a metal-coated central hole by 80%. In addition, very low attenuation can be obtained because of the porosity inside the core region.

Keywords

antireflection coatings; finite difference methods; geometrical optics; holey fibres; optical design techniques; photonic crystals; porosity; porous materials; refractive index; terahertz waves; bending radius; effective mode area; full vectorial finite difference method; metal-coated central hole; mode effective index; optical attenuation; porosity; porous octagonal photonic crystal fibre design; structure geometrical parameter effects; terahertz applications;

fLanguage

English

Journal_Title

Optoelectronics, IET

Publisher

iet

ISSN

1751-8768

Type

jour

DOI

10.1049/iet-opt.2014.0060

Filename

7062117