基于磁光开关的高精度光实时延时线  

High performance optical true time delay line based on magneto-optic switch

作　　者：史双瑾[1] 邱琪[1] 苏君[1] 邱志成[1] 廖云[1] 

机构地区：[1]电子科技大学光电信息学院,成都610054

出　　处：《强激光与粒子束》2009年第9期1301-1304,共4页High Power Laser and Particle Beams

基　　金：省部级资助项目

摘　　要：给出了基于高速磁光开关的光实时延时技术的方案。研究了拓扑结构和磁光开关对光延时性能的影响。研制了5bit，32位的光实时延时系统，并建立了光延时的测试平台，经测试，延时线延时精度优于3ps。对光延时单元插损进行测试，结果显示：32态单元插损为0．12～0．88dB，各态变化呈随机性。The optical true time delay scheme based on magneto-optic（MO） switch was analyzed, and optical and electrical features of MO switch were discussed. The advantages and disadvantages of different topologies were analyzed, i.e. bypass structure and differential structure. A method for measuring optical delay with high precision and high efficiency was put forward. A 5 bit optical delay line system based on MO switch and fiber was set up, and the maximal delay error was less than 3 ps. The test of optical delay units shows that the insertion loss of 32 delay states ranges from 0.12 dB to 0.88 dB at a temperature of 0 to 40 ℃.

关 键 词：光纤实时延时线 磁光开关 拓扑结构 插入损耗 

分 类 号：TN955[电子电信—信号与信息处理]