基于45°倾斜光纤光栅辐射模的线偏振调谐光纤激光器  

Linear Polarized Tunable Fiber Laser Based on Radiation Mode of 45°-Tilted Fiber Grating

作　　者：邢志坤 宋青果 牟成博 闫志君 孙琪真[1,2,3] 刘德明 Xing Zhikun;Song Qingguo;Mou Chengbo;Yan Zhijun;Sun Qizhen;Liu Deming(School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan,Hubei 430074,China;Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan,Hubei 430074,China;National Engineering Laboratory for Next Generation Internet Access System Huazhong University of Science and Technology Wuhan,Hubei 430074,China;Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai University,Shanghai 200444,China;Shanghai Institute for Advanced Communication and Data Science Shanghai University,Shanghai 200444,China;Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication Shanghai University,Shanghai 200444,China)

机构地区：[1]华中科技大学光学与电子信息学院,湖北武汉430074 [2]华中科技大学武汉光电国家研究中心,湖北武汉430074 [3]华中科技大学下一代互联网接入系统国家工程实验室,湖北武汉430074 [4]上海大学特种光纤与光接入网重点实验室,上海200444 [5]上海大学上海先进通信与数据科学研究院,上海200444 [6]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

出　　处：《中国激光》2020年第12期42-47,共6页Chinese Journal of Lasers

基　　金：国家重点研究发展计划(2018YFB2100902);湖北省技术创新专项重大项目(2019AAA053,2018AAA040);湖北省自然基金创新群体(2018CFA004);中央高校基本研究基金(2019kfyRCPY095)。

摘　　要：提出一种基于45°倾斜光纤光栅(45°-TFG)辐射模的线偏振光纤激光器。利用环形谐振腔结构和光纤布拉格光栅,搭建了基于45°-TFG辐射模的线偏振调谐光纤激光器,首次实现了基于TFG辐射模的全光纤单偏振激光输出。实验结果显示,当输入泵浦光功率大于24 mW时,可实现稳定的激光输出,输出激光的中心波长为1553.45 nm,3 dB带宽为0.05 nm,偏振度高达99.8%,激光器系统的斜率效率为10.79%。同时,利用布拉格光纤光栅的温度敏感特性,实现了激光器波长输出从1553.21 nm到1554.03 nm的调谐,调谐灵敏度为11.37 pm/℃。In this study, we propose a linear polarized fiber laser based on the radiation mode of a 45°-tilted fiber grating(45°-TFG). The laser is constructed using a ring resonator structure and a fiber Bragg grating, and an all-fiber single-polarized laser output based on the radiation mode of the TFG is realized for the first time. The experimental results show that when the input pump light power is greater than 24 mW, a stable laser output can be achieved. The central wavelength of the output laser is 1553.45 nm, that of a 3-dB bandwidth is 0.05 nm, degree of polarization is up to 99.8%, and slope efficiency of the laser system is 10.79%. Simultaneously, with the help of the temperature sensitivity of the fiber Bragg grating, the central wavelength of the output can be continuously tuned from 1553.21 nm to 1554.03 nm, and the tuning sensitivity is 11.37 pm/℃.

关 键 词：激光器 光纤激光器 光纤光栅 辐射模 线偏振光纤激光器 

分 类 号：TN248[电子电信—物理电子学] TN253