O. Leminger et R. Zengerle, FULLY VECTORIAL EIGENMODE CALCULATION OF DIELECTRIC WAVE-GUIDES USINGA RAYLEIGH-RITZ METHOD WITH RATIONAL BASIS FUNCTIONS, Optical and quantum electronics, 29(2), 1997, pp. 121-125
A fully vectorial Rayleigh-Ritz method for the eigenmode calculation o
f dielectric waveguides is presented. It uses the four transversal fie
ld components and takes rational functions as an orthonormal basis. Th
is formalism is especially useful near the cutoff frequency and has be
en applied for the investigation of the polarization properties of the
output waveguides in integrated spot-size transformers.