Finite Element Solutions of Surface-Plasmon Modes in Metal-Clad Dielectric Waveguides at THz Frequency

Author

Themistos, Christos ; Rahman, B. M Azizur ; Rajarajan, M. ; Rakocevic, V. ; Grattan, K.T.V.

Author_Institution

Sch. of Eng. & Math. Sci., City Univ., London

Volume

24

Issue

12

fYear

2006

Firstpage

5111

Lastpage

5118

Abstract

Finite element analysis, based on the vector H-field formulation and incorporating the perturbation technique, is used to calculate the complex propagation characteristics of metal-coated dielectric waveguides at terahertz frequencies. The propagation and attenuation characteristics of surface-plasmon modes (SPMs) at the metal/dielectric interfaces are presented. The effects on the modal properties of metal-clad dielectric guides with the cladding thickness and the formation of the supermodes due to coupling between the SPMs in the presence of different surrounding materials are also investigated

Keywords

finite element analysis; optical waveguide theory; submillimetre wave devices; surface plasmons; cladding thickness; finite element analysis; metal-clad dielectric waveguides; perturbation technique; supermodes; surface-plasmon modes; Dielectric materials; Electromagnetic waveguides; Finite element methods; Frequency; Optical sensors; Optical surface waves; Optical waveguides; Scanning probe microscopy; Surface waves; Waveguide components; Finite element method (FEM); metal-clad dielectric waveguides; modal solutions; surface-plasmon modes (SPM); terahertz (THz) waveguides;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2006.884542

Filename

4063434