Title :
Enhanced accuracy in fast-Fourier-based methods for full-vector modal analysis of dielectric waveguides
Author :
Ortega-Monux, A. ; Wangüemert-Pérez, J.G. ; Molina-Fernández, I. ; Silvestre, Enrique ; Andrés, Pedro
Author_Institution :
Dept. de Opt., Univ. de Valencia, Burjassot
fDate :
5/1/2006 12:00:00 AM
Abstract :
A nonconventional variant of a full-vector fast-Fourier-transform-based mode solver is presented to analyze arbitrarily shaped optical dielectric waveguides. The key point of the proposed method for the improvement of the accuracy is to consider a higher number of discretization points in the space domain than Fourier coefficients for the description of the field components. Strongly guiding structures have been analyzed showing excellent accuracy with low computational effort compared to previous approaches
Keywords :
eigenvalues and eigenfunctions; fast Fourier transforms; modal analysis; optical waveguide theory; vectors; Fast-Fourier-based methods; Fast-Fourier-based mode solver; Fourier coefficients; dielectric waveguides; discretization points; eigenmode solver; full-vector modal analysis; optical waveguides; Dielectrics; Electromagnetic waveguides; Fourier series; Magnetic analysis; Modal analysis; Optical waveguides; Periodic structures; Photonic crystal fibers; Transmission line matrix methods; Waveguide discontinuities; Eigenmode solvers; Fourier series; Galerkin method;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.873960
