一种闭环控制的光纤光栅动态色散补偿仪  

Close-Loop Controlled Fiber Grating Dynamic Dispersion Compensator

作　　者：叶青[1] 刘峰[1] 瞿荣辉[1] 方祖捷[1] 

机构地区：[1]中国科学院上海光学精密机械研究所信息光学实验室,上海201800

出　　处：《中国激光》2005年第5期681-684,共4页Chinese Journal of Lasers

基　　金：国家973计划(2001CCA04600);中国科学院知识创新试点工程;上海市科委科技发展基金(02dj14001)资助项目。

摘　　要：利用啁啾光纤光栅的应变调谐特性,将色散补偿的啁啾光纤光栅斜贴于悬臂梁的侧面,通过应力实现啁啾量调整而改变其色散补偿量的大小,同时利用固定在同一悬臂梁的均匀布拉格光栅传感器,实现了闭环自动控制色散补偿量,研制出了一种新型的光纤光栅动态色散补偿仪。该色散补偿仪工作在1550nm波段,典型性能数据为:色散动态补偿范围-1000～-1680ps/nm,插入损耗小于1.5dB,动态调谐步进响应时间小于50ms,基本上能满足10Gb/s光纤通信系统中色散动态补偿的要求。A new chirped fiber Bragg grating dynamic dispersion compensator at 1550 nm band is presented by using stain-tuning characteristics of the grating, and using a narrow band fiber Bragg grating fixed on the same bent beam as a sensor for close-loop control of the dispersion compensation amount. Its typical measured data are as follows. Dispersion compensation tunable range was measured to be -1000 - -1680 ps/nm; its insertion loss and dynamic response time were measured less than 1.5 dB and 50 ms, respectively.

关 键 词：光纤光学 啁啾光纤光栅 动态色散补偿 闭环控制 

分 类 号：O436.3[机械工程—光学工程] TN253[理学—光学]