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.
出处
《中国激光》
EI
CAS
CSCD
北大核心
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
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
optical communication
fiber grating
dispersion compensation
dense wavelength division multiplexing
background loss
