Title :
Finite element approach for the modal analysis of open-boundary waveguides
Author :
Hernandez-Figueroa, Hugo E. ; Fernandez, F.A. ; Davies, J.B.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London
fDate :
11/24/1994 12:00:00 AM
Abstract :
A general finite element approach to computing the modes of open-boundary waveguides is presented. This efficient and robust scheme applies equally to situations with real and complex propagation constants. By using a localised boundary impedance condition, the approach preserves the sparsity of the global matrices. A comparison with the well established infinite element technique and the analysis of a 2-D leaky optical structure are given as examples
Keywords :
finite element analysis; optical constants; optical losses; optical waveguide theory; waveguide theory; 2D leaky optical structure; complex propagation constants; finite element approach; general finite element approach; global matrices; infinite element technique; localised boundary impedance condition; modal analysis; open-boundary waveguides; real propagation constants; robust scheme;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19941412
