三维光波导器件设计中的多重网格法FD-BPM  

Application of Multi-grid FD-BPM in Design of 3 Dimension Wave-guide Components

作　　者：肖悦娱[1] 林青春[1] 何赛灵[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,光及电磁波研究中心,杭州310027

出　　处：《光子学报》2003年第5期559-562,共4页Acta Photonica Sinica

摘　　要：将一种高效的数值计算方法—多重网格法引入到三维有限差分波束传播法 (FD BPM)中 计算了均匀介质内定向高斯波在不同角度时的传播问题 ,并与解析法的结果进行了比较 最后计算了矩形波导的传播模式 ,并与交替方向迭代法BPM计算的结果进行了比较 证实了此方法的可靠性 ,而且这种方法大大提高了广角三维FD BPM的计算速度 。The design of 3D wave-guide components demands large memory and high precision. An effective numerical method, Multi-grid method, is introduced to FD-BPM. The propagations of a Gauss impulse in a uniform medium with different angles are simulated, and are compared with the analytical results. The mode of rectangle wave-guide is also calculated, and is compared with the result obtained from ADI-BPM. The method′s feasibility is verified, and the calculation speed of wide-angle 3D FD-BPM is improved greatly. It is very potential in the simulation and design of 3D wave-guide components.

关 键 词：三维光波导器件 设计 多重网格法 FD—BPM 数值计算 三维有限差分波束传播法 定向高斯波 

分 类 号：TN252[电子电信—物理电子学]