Management of Computational Errors in a Finite-difference Time-domain Method for Photonic Crystal Fibers

This paper describes computational errors found in finite-difference time-domain (FDTD) analyses of photonic crystal fibers and proposes several techniques to improve the accuracy. We first briefly introduce the FDTD computation scheme and discuss the optimization of various simulation parameters to obtain high accuracy with reasonable computation loads. The calculation of a bending loss with good agreement with the experimental data is demonstrated by proper selection of the computation domain. Finally, we propose a simulation based on a real fiber image to reflect irregularities and fabrication errors for fiber structures. This paper describes computational errors found in finite-difference time-domain (FDTD) analyses of photonic crystal fibers and proposes several techniques to improve the accuracy. We first briefly introduce the FDTD computation scheme and discuss the optimization of various simulation parameters to obtain high accuracy with reasonable computation loads. The calculation of a bending loss with good agreement with the experimental data is demonstrated by proper selection of the computation domain. Finally, we propose a simulation based on a real fiber image to reflect irregularities and fabrication errors for fiber structures. KCI Citation Count: 1