光学学报, 2017, 37 (10): 1006004, 网络出版: 2018-09-07
π相移光纤光栅的温度调谐特性 下载: 790次
Temperature Tuning Properties of π Phase-Shifted Fiber Bragg Gratings
光栅 温度调谐 π相移光纤光栅; 窄线宽激光器 可调谐激光 gratings temperature tuning π phase-shifted fiber grating; narrow linewidth lasers tunable laser
摘要
根据π相移光纤光栅的温度可调谐原理,使用半导体制冷器(TEC)和制冷片控制π相移光纤光栅的温度,从而改变其中心波长。随着温度升高,π相移光纤光栅的中心波长向长波方向线性漂移,温度从0 ℃变化到95 ℃时,中心波长从1548.921 nm变化到1550.664 nm,波长改变量为1.743 nm,灵敏度约为18.35 pm/℃。为了验证π相移光纤光栅温度调谐的特性,采用与其匹配的高反光纤光栅构成了C波段环形腔光纤激光振荡器,利用π相移光栅的窄带滤波特性实现了窄线宽激光输出,并通过控制π相移光栅的温度实现了输出激光波长的连续调谐。
Abstract
Based on the temperature tunable principle of π phase-shifted fiber Bragg gratings, a thermo-electric cooler and a refrigeration wafer are used to control the temperature of a π phase-shifted fiber Bragg grating, and then change its central wavelength. Its central wavelength has a bathochromic shift with temperature rising. As the temperature rises from 0 ℃ to 95 ℃, the central wavelength changes from 1548.921 nm to 1550.664 nm with a total change of 1.743 nm. The sensitivity is approximately 18.35 pm/℃. In order to verify the temperature tuning properties of π phase-shifted fiber Bragg gratings, we design a C-band ring-cavity fiber laser by using high reflectivity fiber Bragg grating(FBG) with matched reflectance spectrum. We use narrow-band filtering characteristics of π phase-shifted FBG to realize narrow linewidth fiber laser output,and control the temperature to realize continuous tuning of output laser wavelength.
孙俊杰, 王泽锋, 王蒙, 奚小明, 陈金宝. π相移光纤光栅的温度调谐特性[J]. 光学学报, 2017, 37(10): 1006004. Junjie Sun, Zefeng Wang, Meng Wang, Xiaoming Xi, Jinbao Chen. Temperature Tuning Properties of π Phase-Shifted Fiber Bragg Gratings[J]. Acta Optica Sinica, 2017, 37(10): 1006004.