多通道可编程光控真延时网络方案改进与实现  

Improvement and implementation of a multi-channel programmable optical controlled true time delay network

作　　者：段兴[1] 张斯滕 姜媛媛 李曙光 邹卫文[1] 陈建平[1] 

机构地区：[1]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200240 [2]上海航天电子通讯设备研究所,上海201109

出　　处：《光通信技术》2017年第5期1-4,共4页Optical Communication Technology

基　　金：国家自然科学基金(61571292;61535006)资助;教育部高等学校博士学科点专项科研基金(20130073130005)资助

摘　　要：给出了一种多通道可编程光控真延时网络的改进方案。针对原有方案在同一通道内不同延时状态下存在较大幅度差异的缺点,提出了一种大幅度差异下的均衡放大方法,将不同延时状态下幅度起伏降低了一个数量级。此外,将原有方案中的微电子机械系统(MEMS)光开关替换为高速磁光开关,可将延时切换速度由毫秒量级提升至微秒量级,大幅提升了波束扫描速度。最后,演示了8通道3比特的高速可编程光控真延时网络样机。This paper proposed an optimized architecture of multi-channel programmable optical controlled true time delay network. In this architecture, a new method of balanced amplification is adopted to reduce the gain ripple among different time delay states by 10 times at least. In addition, the micro-electro-mechanical system（MEMS） optical switches are replaced with high speed magneto-optic switches to enhance the time de- lay switching speed from millisecond level to microsecond level, which significantly increases the beam scan- ning speed. Finally, an 8-channel, 3bit high speed programmable optical true time delay network prototype is implemented and tested.

关 键 词：光控相控阵雷达 波束成形 光纤真延时 阵列波导光栅 

分 类 号：TN929.11[电子电信—通信与信息系统] TN929.13[电子电信—信息与通信工程]