MAS and MMP Simulations of Photonic Crystal Devices

We present a new technique for the computation of transmission and reflection coefficients of waveguide discontinuities in photonic crystals (PhCs). This technique is based on the Method of Auxiliary sources (MAS) and uses a special complex origin source for an optimal excitation of the mode in the input port and a reflection compensation scheme for handling the reflections at the output ports. In order to validate the results, we use a rather rigorous approach, based on a combination of the Multiple Multipole Program (MMP) with Mode Matching Technique (MMT). Good agreement is obtained for various applications, such as waveguide bends, filtering T-junctions, and coupling of a slab waveguide to a PhC waveguide