脊的变化对双脊波导场图的影响分析  

Analysis field pattern with mutative ridge of double-ridge waveguide

作　　者：孙岐峰[1] 逯迈[2] 陈小强[2] 

机构地区：[1]淮安信息职业技术学院,江苏淮安223000 [2]兰州交通大学光电技术与智能控制教育部重点实验室,兰州730070

出　　处：《激光杂志》2013年第6期32-33,共2页Laser Journal

摘　　要：对称双脊波导脊的大小变化改变其传输特性参数,采用亥姆霍兹方程有限元方法计算出双脊波导主模截止波长数值,结果与文献结果对比说明计算方法精确有效,求对应的特征向量,就可得到脊波导横截面上的电场分布,从而分析脊大小变化对场结构图的影响。The transfer characteristic parameter of Doubleridge waveguide can be changed by mutative ridge. The influence of the mutative ridge on the field pattern of the dominant mode in a double - ridge waveguide is analyzed by the finite - element method. Numerical results demonstrated that the method is correct and efficient. The proper vector is calculating by characteristic value, and the field pattern is easy obtained. So we can analysis the field pattern with mutative ridge of Double - ridge waveguide.

关 键 词：双脊波导 亥姆霍兹方程 有限元方法 截止波长 

分 类 号：TN248.1[电子电信—物理电子学]