Analysis of irregularities in a planar dielectric waveguide

Author

Chung, Shyh-Jong ; Chen, Chun Hsiung

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

36

Issue

9

fYear

1988

fDate

9/1/1988 12:00:00 AM

Firstpage

1352

Lastpage

1358

Abstract

A numerical method based on the partial variational principle (PVP) is proposed to solve discontinuity problems due to arbitrary irregularities in a planar dielectric waveguide. A variational equation is established and solved by the finite-element method along with the Green´s-function technique. The integral variable of the Green´s-function is changed so that numerical calculations can easily be performed. Because of the accuracy of the present method, the radiation fields can be obtained with no difficulty. Several numerical results, including the reflection and transmission coefficients as well as the radiation losses and patterns, are calculated and compared

Keywords

Green´s function methods; dielectric waveguides; finite element analysis; variational techniques; waveguide theory; Green´s-function technique; discontinuity problems; finite-element method; integral variable; irregularities; numerical method; partial variational principle; planar dielectric waveguide; radiation fields; radiation losses; radiation patterns; reflection coefficients; transmission coefficients; Dielectrics; Distributed feedback devices; Finite element methods; Gratings; Least squares approximation; Optical waveguides; Planar waveguides; Waveguide components; Waveguide discontinuities; Waveguide junctions;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.3682

Filename

3682