基于倾斜光栅的可调谐线偏振掺镱光纤激光器  

Wavelength-Tunable Linearly Polarized Yb-Doped Fiber Laser Based on Tilted Fiber Grating

作　　者：杨锦民 林彦吕 黄千千 黄梓楠 邢志坤 闫志君 牟成博 Yang Jinmin;Lin Yanlü;Huang Qianqian;Huang Zinan;Xing Zhikun;Yan Zhijun;Mou Chengbo(Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai Institute for Advanced Communication and Data Science,Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication,Shanghai University,Shanghai 200444,China;National Engineering Laboratory for Next Generation Internet Access System,School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]上海大学特种光纤与光接入网重点实验室,上海先进通信与数据科学研究院,上海大学特种光纤与先进通信国际合作联合实验室,上海200444 [2]华中科技大学光学与电子信息学院下一代互联网接入系统国家工程实验室,湖北武汉430074

出　　处：《光学学报》2020年第3期95-102,共8页Acta Optica Sinica

基　　金：国家自然科学基金(61605107,61505244);天津大学光电信息技术教育部重点实验室开放课题(2018KFKT009)。

摘　　要：提出了一种基于45°倾斜光纤光栅和光纤布拉格光栅的线性腔结构的可调谐线偏振掺镱光纤激光器。利用45°倾斜光纤光栅作为起偏器件实现了中心波长为1065.90 nm、3 dB带宽为0.03 nm、偏振消光比高于35 dB的线偏振激光输出,输出激光的偏振消光比在4 h内稳定性良好。基于光纤布拉格光栅反射波长的温度特性实现了中心波长在1065.92~1066.87 nm范围内的连续可调,在波长可调谐状态下输出激光的偏振消光比保持在30 dB以上。A tunable, linearly polarized Yb-doped fiber laser, based on a 45°-tilted fiber grating and a fiber Bragg grating with a linear cavity, is proposed. The use of the tilted fiber grating as a linear polarizer provides an output laser with a central wavelength of 1065.90 nm, a 3 dB bandwidth of 0.03 nm, and a polarization extinction ratio higher than 35 dB. The polarization extinction ratio remains stable for 4 h. The temperature characteristics of the beam reflected by the fiber Bragg grating make the central wavelength continuously tunable in the range of 1065.92--1066.87 nm;during the tuning operation, the output polarization extinction ratio is maintained at ≥30 dB.

关 键 词：激光器 光纤激光器 光纤布拉格光栅 单偏振 波长可调谐 

分 类 号：TN253[电子电信—物理电子学]