Title :
Variable grid finite difference methods for study of longitudinally varying planar waveguides
Author :
Artiglia, M. ; Vita, P. Di ; Potenza, M. ; Coppa, G. ; Lapenta, G. ; Ravetto, P.
Author_Institution :
CSELT, Torino, Italy
Abstract :
A new discretisation procedure based on a finite difference approach is presented for the analysis of arbitrary two-dimensional optical dielectric waveguides. It is based on a longitudinally variant discretisation grid that allows an accurate treatment of waveguide changes of geometry to be obtained. Comparisons with the well known beam propagation method show a strong improvement in accuracy and computational time saving.
Keywords :
dielectric waveguides; difference equations; optical waveguide theory; arbitrary two-dimensional optical dielectric waveguides; beam propagation method; discretisation procedure; finite difference approach; longitudinally variant discretisation grid; longitudinally varying planar waveguides; waveguide changes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910298
