【摘要】 介绍了一个基于时域有限差分法(FDTD)的二维光子晶体器件设计软件PCCAD,所用的核心算法是时域有限差分法。与同类FDTD商业软件相比,特点在于其具有多种光子晶体结构编辑模板,多种点源、线源,先进的边界吸收技术及多种参数优化扫描等功能。快速傅里叶变换及Pade算法在软件设计中的应用使模拟更加精确、快速。软件适用于各种平面光子晶体的仿真设计,探索新的器件结构。最后,利用此软件设计了直波导、T型波导等二维平面光子晶体器件。更多还原

【Abstract】 A 2D photonic crystals device design software-PCCAD,which is based on finite difference time domain method(FDTD),is introduced in this paper.The key algorithm used in this software is FDTD.Compared with the existing commercial FDTD applications,PCCAD has the following advantage:plenty of photonic crystals design templates,point and line incident wave source,advanced absorb bound condition and the faction of parameter optimize scanning.The application of FFT and Pade algorithm bring more precision and save much time from simulating.This software is suitable for 2D photonic crystals device design or looking for new structure.At the last of this paper,some types of photonic crystals waveguide is designed using this software.更多还原