The weighted index beam propagation method (WIBPM)

Abstract

We present a new beam propagation technique for the analysis of 3-dimensional (3D) integrated optical structures. This new technique depends on the use of the weighted index method to transform the 3 dimensional BPM into two coupled 2-dimensional BPM techniques. The numerical results show good agreement with the standard 3D BPM while the computational time as well as the required memory are greatly reduced.