On-line writing identical and weak fiber Bragg grating arrays  

作　　者：郭会勇 唐健冠 李小甫 郑羽 余华 余海湖 

机构地区：[1]National Engineering Laboratory of FOS Technology, Wuhan University of Technology

出　　处：《Chinese Optics Letters》2013年第3期4-7,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61205070and61290311);the Fundamental Research Funds for the Central Universities(No.WHUT2012-IV-018)

摘　　要：We investigate the on-line writing identical fiber Bragg grating （FBG） arrays using the phase mask tech- nique. Given the limitation of laser power, the energy density uniformity and the horizontal width of the writing spot cannot be further optimized. The results show that the FBG arrays obtained in the optimal process （drawing speed of 12±0.15 m/min and average tension of 38.2 g） have a central wavelength bandwidth of less than 0.1 nm and an average refiectivity of 0.26%. Thus, the phase mask method is a promising alternative for on-line writing identical FBG arrays.We investigate the on-line writing identical fiber Bragg grating （FBG） arrays using the phase mask tech- nique. Given the limitation of laser power, the energy density uniformity and the horizontal width of the writing spot cannot be further optimized. The results show that the FBG arrays obtained in the optimal process （drawing speed of 12±0.15 m/min and average tension of 38.2 g） have a central wavelength bandwidth of less than 0.1 nm and an average refiectivity of 0.26%. Thus, the phase mask method is a promising alternative for on-line writing identical FBG arrays.

关 键 词：Fiber Bragg gratings 

分 类 号：TN253[电子电信—物理电子学] TN215