Abstract

The hitherto used BPM algorithm based on the MoL [1] was first demonstrated at the Hilton Head Conference [2] and than described in [3]. The MoL-BPM overcomes the disadvantages of the BPM based on the paraxial approximation, e.g. small refractive index steps, artifical absorbers, numerical loss. Special characteristics of the MoL-BPM are the use of Helmholtz (or Sturm-Liouville) Equation, numerical absorbing or radiation conditions, use of eigensolution, implementation of the interface conditions for the fields. In this contribution two new algorithms will be presented. First a special algorithm for waveguide bends is presented. Then an algorithm for the vectorial field is described.

© 1992 Optical Society of America