光子带隙结构时域仿真  

Simulation of Photonic Band Gap Structure in Time Domain

作　　者：郑宏兴[1] 丁巨超[1] 黄文武[2] 郁道银[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院 [2]中国科学院电子学研究所,北京100080

出　　处：《天津大学学报》2007年第5期611-615,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金资助项目(60671009);天津工程师范学院青年教师基金资助项目(05010)

摘　　要：为了研究光子晶体的能带,利用时域有限差分方法对矩形几何结构的光子晶体进行数值仿真.通过分析光子晶体中电磁场的空间分布和随时间的变化,得到了本征模空间分布与光子能带分布之间的规律.然后通过比较不同波矢和不同能带本征模的空间分布,准确地确定了光子晶体的能带.仿真结果有效地验证了本征模理论,为光子晶体新结构设计提供了重要依据.In order to investigate the energy band of photonic crystal, the finite-difference time-domain method was applied to solving the Maxwell＇s equations in dispersion media. Distributional data of electromagnetic fields in rectangular photonic crystal structure were obtained. After the rule of electromagnetic fields changing with space and time in the structure was analyzed, the relation between spatial distribution of eigenmode and energy band distribution of the photon was found. Moreover, by comparing the spatial distribution of different wave vectors and of different energy band eigenmodes, the energy band of photonic crystal was confirmed accurately. Numerical results substantiate the eigenmode theory efficiently, which provides important foundation for desig- ning novel photonic crystal structure.

关 键 词：时域有限差分方法 光子晶体 能带 本征模 

分 类 号：TN822[电子电信—信息与通信工程]