Towards a full vectorial and modal technique for the analysis of integrated optics structures: The Radiation Spectrum Method (RSM)

We present a modal method for the analysis of integrated optics structures. The presented technique, called Radiation Spectrum Method (RSM), is based on the analysis of the radiation mode spectrum generated at each waveguide discontinuity in the structure, The full wave capabilities of the RSM are demonstrated by its application for several non-paraxial tests as tilted waveguide and bent waveguide tests. We also demonstrate the method capability to correctly analyse components using abrupt index changes. (C) 1997 Elsevier Science B.V.