Title :
Improvement of finite difference methods for step-index optical waveguides
Author_Institution :
CNET, Lannion, France
fDate :
4/1/1992 12:00:00 AM
Abstract :
New 3-point finite difference formulae with equally spaced grid points are given for the analysis of scalar or semivectorial fields in waveguides with discontinuous refractive index profiles. The new formulae lead to more accurate calculations for the modes than the previously known methods, irrespective of the location of the discontinuities with respect to the grid points and without averaging the permittivity over meshes
Keywords :
difference equations; optical waveguide theory; refractive index; 3-point finite difference formulae; discontinuous refractive index profiles; equally spaced grid points; finite difference methods; integrated optics; optical fibres; planar waveguides; scalar fields; semivectorial fields; step-index optical waveguides;
Journal_Title :
Optoelectronics, IEE Proceedings J
