R-matrix propagator with perfectly matched layers for the study of integrated optical components

The perfectly matched layer boundary conditions are incorporated into the R-matrix propagator method to achieve an extended capability for the modeling of integrated optical devices. As examples, with this technique we calculate the free-space coupling of a Gaussian beam into a planar waveguide, both with and without surface roughness on the waveguide surface. (C) 1999 Optical Society of America [S0740-3232(99)00112-X].