不同变形下梯形脊波导传输特性研究  

Study of Transmission Characteristic of Trapezoidal-ridge Waveguide in Different Distortions

作　　者：赵霞[1] 陈小强[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：《激光与红外》2008年第6期590-592,共3页Laser & Infrared

基　　金：本课题受兰州交通大学青蓝人才工程项目资助;甘肃省自然科学基金项目(3ZS024-B25-034)支持

摘　　要：脊波导器件在使用中会产生各种变形,本文采用有限元方法研究错位和受力变形对梯形脊波导传输特性的影响。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1%,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%以上,在使用中应引起重视。Ridge waveguide apparatus will engender various distortions in use, the paper adopts the finite element method to research the influence of transmission characteristic of displacement distortion and distortion under stress to trapezoidal-ridge waveguide. Numerical results indicate that displacement distortion makes the cutoff wavelength of ridge waveguide increase, but the extent of single-mode bandwidth increased is less than 1%. For transmission characteristic of ridge waveguide,it has bigger influence and should be respected in use that distortion of ridge waveguide under stress in two sides, while deformation attains 10% ,its characteristics change more than 10%.

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]