新型结构波导光栅耦合器的耦合特性分析和数值模拟  

Theoretical analysis and numerical simulation of optical coupling properties of the waveguide grating with novel structure

作　　者：杨永斌[1] 王玉荣[1] 于晓强[1] 

机构地区：[1]山东大学,山东济南250100

出　　处：《光学技术》2006年第2期234-236,239,共4页Optical Technique

摘　　要：针对一种新型结构的波导光栅耦合器,通过求解波在直角坐标系下电场分量的亥姆霍兹方程获得了TE导模和TE辐射模的电场。运用模耦合理论分析了光束通过光栅被耦合到波导当中的情况。数值模拟了在不同的波导和光栅结构参数下耦合系数的变化情况。For the waveguide grating photocoupler with novel structure, the electric field of the TE guided wave and the TE radiating wave was obtained by solving the Helmholtze equation in the spatial rectangular coordinates. The relations between the coupling coefficient and the different structure parameters of the waveguide and grating were analyzed by using the mode coupling theories. Their corresponding numerical simulation results are given.

关 键 词：波导光栅 模耦合理论 耦合器 

分 类 号：TN252[电子电信—物理电子学] TN253