Title :
Analysis of optical waveguide discontinuities
Author :
Rahman, B. M Azizur ; Davies, J. Brian
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll., London, UK
fDate :
1/1/1988 12:00:00 AM
Abstract :
A novel approach for analyzing discontinuity problems in optical waveguides is presented. The method is a combination of the vector-finite-element method and the least-squares boundary residual method. The vector-H-field-finite-element method is capable of providing accurate eigenvalues and eigenvectors for a wide range of optical waveguide problems, including arbitrary shape, arbitrary index distribution, and anisotropic materials. The least-squares boundary residual method matches the continuity of tangential fields in the least-squares sense, taking into account many modes at the discontinuity plane, to give the general scattering matrix. A few results are presented to show the usefulness of the approach
Keywords :
eigenvalues and eigenfunctions; finite element analysis; least squares approximations; optical waveguides; anisotropic materials; arbitrary index distribution; discontinuity problems; eigenvalues; eigenvectors; least-squares boundary residual method; optical waveguide discontinuities; scattering matrix; tangential field continuity; vector-H-field-finite-element method; vector-finite-element method; Eigenvalues and eigenfunctions; Finite element methods; Geometrical optics; Least squares methods; Optical scattering; Optical sensors; Optical waveguide components; Optical waveguide theory; Optical waveguides; Planar waveguides; Waveguide discontinuities;
Journal_Title :
Lightwave Technology, Journal of
