电磁场的分解在纵向非均匀光栅分析中的应用  

The application of decomposing the field in analysis of inhomogeneous gratings

作　　者：王建[1] 宋军[1] 成丽华[1] 

机构地区：[1]浙江大学光及电磁波研究中心,浙江杭州310058

出　　处：《光学仪器》2006年第5期8-12,共5页Optical Instruments

摘　　要：介绍利用电磁场的分解来分析纵向非均匀光栅的方法。在此方法中,通过光栅后的散射场被按照两个相反方向分解为两个部分,然后利用传输格林函数近似求解。模拟计算结果证明该方法能较好地计算此类光栅。An efficient method of analyzing the laterally periodic gratings which are inhomogeneous in the vertical direction by decomposing the field is presented. In the method, the scattered field is decomposed into two components propagating in opposite directions by using wave splitting approach. Then transmission Green function approach is used for calculating the coefficient matrices of the fields. Numerical results indicate that the coefficients of the field can be got easily, rapidly and exactly by using this method.

关 键 词：纵向非均匀 电磁场分解 传输格林函数 

分 类 号：TN256[电子电信—物理电子学]