Absorbing boundary conditions for FDTD simulations of photonic crystal waveguides

作     者：Mekis, A Fan, SH Joannopoulos, JD 

作者机构：MIT Dept Phys Cambridge MA 02139 USA 

出 版 物：《IEEE MICROWAVE AND GUIDED WAVE LETTERS》 (IEEE Microwave Guided Wave Lett)

年 卷 期：1999年第9卷第12期

页      面：502-504页

核心收录：

基　　金：National Science Foundation  NSF  (DMR-9400334) 

主　　题：absorbing boundary conditions finite-difference time-domain method photonic crystal waveguide 

摘      要：We present a novel numerical scheme for the reduction of spurious reflections in simulations of electromagnetic wave propagation in photonic crystal waveguides. We use a distributed Bragg reflector waveguide termination to reduce reflection from photonic crystal waveguide ends by improving k-matching for photonic crystal waveguided modes. We describe computational procedures and exhibit that a significant reduction in reflection amplitude can be achieved across a large part of the guided mode spectrum. This method enables one to reduce simply and effectively the computational requirements in photonic crystal waveguide simulations.