高阶FDTD法分析电大尺寸光波导器件  

Analysis of Electrically-large Optical Waveguide Devices Using High-order FDTD Method

作　　者：孔繁敏[1] 李康[1] 郭毅峰[1] 

机构地区：[1]山东大学信息科学与工程学院,济南250100

出　　处：《光电子．激光》2004年第6期671-674,678,共5页Journal of Optoelectronics·Laser

基　　金：山东大学青年基金(11170051310029)的资助。

摘　　要：高阶时域有限差分(FDTD)法用于电 大尺寸平面光波导器件的时域分析,实现了高阶FDTD法的理想匹配层(PML)吸收边界条件;研究了高阶FDTD法的数值色散特性,并对平行介质带定向耦合器进行了数值模拟,所得结果与解析解非常一致。The finite difference time domain (FDTD) method with high-order approximate was introduced to the time-domain analysis of electrically-large planar optical waveguide devices. The perfectly matched layers (PML) absorbing boundary condition for higher-order FDTD method was implemented and the numerical dispersion of this scheme was studied. The numerical simulations for the parallel-slab directional coupler were presented and the computing results using this scheme are in highly accordance with analytical solutions. Compared with conventional FDTD method, this scheme could save considerable computational resource without sacrificing solution accuracy, and especially could be applied in the computer-aided design and analysis of electrically-large optical devices.

关 键 词：高阶时域有限差分法 FDTD 时域分析 光波导器件 理想匹配层 吸收边界条件 数值色散特性 定向耦合器 数值模拟 平行介质带 PML 

分 类 号：TN252[电子电信—物理电子学]