ACCURACY IMPROVEMENT OF FINITE-DIFFERENCE TIME-DOMAIN METHOD FOR PHOTONIC CRYSTAL FIBERS

N. H. Vu, I. K. Hwang

Abstract


This paper describes computational errors found in Finite-Difference
Time-Domain analyses of photonic crystal fibers, and proposes several
techniques for the accuracy improvement. We first briefly introduce the
FDTD computation scheme, and discuss about the optimization of various
simulation parameters to obtain high accuracy with reasonable computation
loads. The calculation of bending loss with good agreement
with experimental data is demonstrated by proper selection of the computation
domain. Finally, we propose the simulation based on a real fiber
image to reflect irregularities and fabrication errors of fiber structures.

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