器件变形对倒梯形脊波导传输特性影响的研究  

Study on effects of device deformations on the transmission characteristics of trapezoidal-ridge waveguides

作　　者：陈小强[1] 赵霞[1] 逯迈[2] 任恩恩[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070 [2]兰州交通大学光电技术与智能控制教育部重点实验室,甘肃兰州730070

出　　处：《光通信研究》2008年第1期54-56,共3页Study on Optical Communications

基　　金：甘肃省自然科学基金资助项目(3ZS024-B25-034);兰州交通大学青蓝人才工程资助项目

摘　　要：针对脊波导器件在使用中产生的各种变形,采用Matlab环境下的有限元PDE工具箱进行了二次编程,求得错位变形和不同受力变形时的传输特性。数值分析结果表明:错位变形使脊波导截止波长变长,单模带宽增大程度小于2%,对于脊波导传输特性影响较大的是双边受力变形,当变形达到10%时,其特性变化超过10%,在使用中应引起重视。In view of various deformations of ridge wavcguide devices in use, we conduct secondary programming by using the finite element PDE toolbox in the Matlab environment to obtain the transmission characteristics of the waveguide in displacement deformation and different deformations under stress. Numerical analysis results indicate that displacement deformation elongates the cutoff wavelength of the ridge waveguide and in the case of single mode bandwidth, the increase is less than 2%, while greater effect on the ridge waveguide is produced by the deformations under stress in both sides with over 10% changes in its characteristics when the deformation reaches 10%, to which we should pay much attention in practice,

关 键 词：有限元法 脊波导 截止波长 单模带宽 

分 类 号：TN814[电子电信—信息与通信工程]