FDTD-SUPML simulation of photonic integrated circuits
ABSTRACT Accurate modeling of photonic integrated circuits (PIC) is essential for development of high performance optical components. In this work, a finite difference time domain method (FDTD), combined with a simplified uniaxial perfectly matched layer boundary condition is presented to efficiently analyze light propagation in PIC. The FDTD-SUPML formulation can be easily applied to complex optical components. Numerical examples illustrate that this combined approach gives high accuracy.
- SourceAvailable from: Allen Tafloveedited by Allen Taflove, 06/1998; Artech House, Inc.., ISBN: 0-89006-834-8
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ABSTRACT: In this letter, a modification to the recently proposed unconditionally stable D-H ADI FDTD method is presented that considerably reduces the late-time error induced by the corner cells. The PML boundary is derived from the direct discretization of the modified D-H Maxwell's equations rather than the superposition of uniaxial PML boundaries. An optimal choice of the PML conductivity profile coefficients is proposed. Results show that the reflection error of the PML is limited for increased time step size beyond the Courant-Friedrichs-Lewy stability bound, and maximum reflection errors are 15 to 20 dB lower than the original formulation.IEEE Microwave and Wireless Components Letters 09/2003; · 1.78 Impact Factor