π相移光纤光栅的温度调谐特性  

Temperature Tuning Properties of π Phase-Shifted Fiber Bragg Gratings

作　　者：孙俊杰[1,2,3] 王泽锋 王蒙[1,2,3] 奚小明 陈金宝[1,2,3] Sun Junjie;Wang Zefeng;Wang Meng;Xi Xiaoming;Chen Jinbao(College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073, China;Hunan Provincial Collaborative Innovation Center of High Power Fiber Laser, Changsha, Hunan 410073, China;Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha, Hunan 410073, China)

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073 [2]大功率光纤激光湖南省协同创新中心,湖南长沙410073 [3]高能激光技术湖南省重点实验室,湖南长沙410073

出　　处：《光学学报》2017年第10期80-84,共5页Acta Optica Sinica

基　　金：国家自然科学基金(11274385)

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1548.921nm变化到1550.664nm,波长改变量为1.743nm,灵敏度约为18.35pm/℃。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。Based on the temperature tunable principle ofπphase-shifted fiber Bragg gratings,a thermo-electric cooler and a refrigeration wafer are used to control the temperature of aπphase-shifted fiber Bragg grating,and then change its central wavelength.Its central wavelength has a bathochromic shift with temperature rising.As the temperature rises from0 ℃to 95 ℃,the central wavelength changes from1548.921 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 ofπphaseshifted 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 ofπphase-shifted FBG to realize narrow linewidth fiber laser output,and control the temperature to realize continuous tuning of output laser wavelength.

关 键 词：光栅 温度调谐 π相移光纤光栅 窄线宽激光器 可调谐激光 

分 类 号：O436[机械工程—光学工程]