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Absorbing boundary conditions for FDTD simulations of photonic crystal waveguides

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3 Author(s)
Mekis, A. ; Dept. of Phys., MIT, Cambridge, MA, USA ; Shanhui Fan ; Joannopoulos, J.D.

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 show 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

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:9 ,  Issue: 12 )