Analysis of biaxially anisotropic dielectric waveguides with Gaussian-Gaussian index of refraction profiles by the finite-difference method

Author

Sobrinho, C. L Da Silva Souza ; Giarola, A.J.

Author_Institution

Dept. of Electr. Eng., Federal Univ. of Para, Belem, Brazil

Volume

140

Issue

3

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

224

Lastpage

230

Abstract

A rigorous, versatile and general formulation for the analysis of propagation characteristics of rectangular biaxial anisotropic dielectric waveguide structures with arbitrarily varying indices of refraction profiles is presented. In this formulation the finite-difference method is used for the numerical solution of the wave equation, written in terms of the transverse components of the magnetic field. As a result, a conventional eigenvalue problem is obtained without the presence of the spurious modes (observed in previous formulations), due to the implicit inclusion of the divergence of the magnetic field equal to zero. The theoretical development was used to solve particular problems and the results have shown agreement with those available using other methods

Keywords

dielectric waveguides; eigenvalues and eigenfunctions; finite difference methods; rectangular waveguides; refractive index; waveguide theory; Gaussian-Gaussian index of refraction profiles; biaxially anisotropic waveguide; dielectric waveguides; eigenvalue problem; finite-difference method; magnetic field; numerical solution; rectangular waveguide; wave equation;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings H

Publisher

iet

ISSN

0950-107X

Type

jour

Filename

224070