中文摘要：

将时域伪谱（PSTD）方法应用于平面光集成器件的分析，推导并实现了可用于PSTD方法的单轴各向异性完全匹配层（UPML）吸收边界条件，讨论了专用于导波结构仿真的一种紧凑的PSTD激励源。并对分布式反馈（DFB）光栅进行了数值模拟，其仿真结果与传统时域有限差分（FDTD）方法相当吻合，但PSTD无论在计算时间还是内存需求方面都大大优于FDTD方法。

英文摘要：

We discussed the analysis procedure of planar optical waveguide devices using the pseudo-spectral time domain（PSTD） method. The uni-anisotropic perfectly matched layer（UPML） has been introduced into the PSTD method. A compact twin wave sources has been used to excite the guided wave devices. Utilizing these techniques in this work,a distributed feedback grating has been simulated. The result shows good agreement with the traditional finite difference time domain（FDTD） method, moreover this work shows much higher efficiency in computational requirements.