光纤的紫外曝光引起的背景损耗  

Background Loss of the Fiber Induced by the Ultraviolet Light Exposure

作　　者：谭中伟[1] 李彬[1] 王燕花[1] 任文华[1] 刘艳[1] 宁提纲[1] 简水生[1] 

机构地区：[1]北京交通大学光波技术研究所,北京100044

出　　处：《中国激光》2007年第2期239-242,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金(60607001);北京交通大学研究员专项基金(48105);北京市自然科学基金(4052023)资助项目

摘　　要：在密集波分复用(DWDM)系统中进行多信道色散补偿时,需要把多个光纤光栅串联在一起使用,这样连接在后面的光纤光栅的插损会因为背景损耗的存在而随着光纤光栅数量的增加而增大,尤其是波长较多的时候,接在最后的信道的插损会显著增大,这将制约光纤光栅的最大连接数。通过实验探讨了光纤的紫外曝光造成的背景损耗对串联的窄带啁啾光纤光栅的影响以及对光纤光栅最大连接数的限制。When multichannel dispersion compensation is made in the dense wavelength division multiplexing （DWDM） systems, many fiber gratings are needed to be concatenated together. The insertion loss of gratings will increase due to the background loss as increasing of the number of gratings. Especially when the number of channels is large, the last channel insert loss gets larger obviously, which limits the maximum of the amount of the gratings concatenated together. The maximum number of the concatenated chirped fiber gratings is investigated through the experiment about measuring the background loss of the photosensitive fiber induced by ultraviolet light exposure.

关 键 词：光纤通信 光纤光栅 色散补偿 密集波分复用 背景损耗 

分 类 号：TN292.11[电子电信—物理电子学]