Open AccessAccurate analysis of planar optical waveguide devices using higher-order FDTD scheme
Author(s) -
Fanmin Kong,
Kang Li,
Xin Liu
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.011796
Subject(s) - finite difference time domain method , optics , planar , perfectly matched layer , waveguide , numerical analysis , dispersion (optics) , slab , finite difference method , computer science , physics , mathematics , mathematical analysis , computer graphics (images) , geophysics
A higher-order finite-difference time-domain (HO-FDTD) numerical method is proposed for the time-domain analysis of planar optical waveguide devices. The anisotropic perfectly matched layer (APML) absorbing boundary condition for the HO-FDTD scheme is implemented and the numerical dispersion of this scheme is studied. The numerical simulations for the parallel-slab directional coupler are presented and the computing results using this scheme are in highly accordance with analytical solutions. Compared with conventional FDTD method, this scheme can save considerable computational resource without sacrificing solution accuracy and especially could be applied in the accurate analysis of optical devices.