Single-Frequency Random Distributed Bragg Reflector Fiber Laser

被引:10
作者
Deng, Jiancheng [1 ]
Li, Yanxin [1 ]
Shen, Ming [1 ]
Shu, Xuewen [1 ,2 ]
机构
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
[2] Hubei Normal Univ, Coll Phys & Elect Sci, Huangshi 435002, Hubei, Peoples R China
基金
国家重点研发计划; 中国国家自然科学基金; 欧盟地平线“2020”;
关键词
Reflection; Reflectivity; Lasers; Erbium-doped fiber lasers; Laser modes; Bandwidth; Optical fiber amplifiers; Distributed bragg reflector fiber lasers; erbium-doped fiber lasers; femtosecond laser writing; random fiber gratings; random fiber lasers; single-frequency fiber lasers; ER-DOPED FIBER; NARROW-LINEWIDTH; STRAIN SENSOR; FBG;
D O I
10.1109/JLT.2022.3160490
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We propose and demonstrate a novelsingle-frequency erbium-doped random distributed Bragg reflector fiber laser (RDBR-FL) constructed by a random fiber grating (RFG) and a high-reflection fiber Bragg grating (HR-FBG). Since it is not necessary to precisely control the axial position of the sub-gratings constituting the RFG, the inscription of long RFGs is easy and low-cost. The RFG manufactured by femtosecond laser point-by-point inscription technique has a length of up to 76 mm. The reflection spectrum of the RFG is designed to ensure the stable single-peak emission of the RDBR-FL under the HR-FBG spectral filtering. The bandwidth of the selected reflection peak of the RFG is only 13 pm, which ensures the single frequency operation of the RDBR-FL. The measured linewidth of the RDBR-FL is 3.9 kHz. Experimental measurement shows that the effective cavity length of the RDBR-FL is as long as 109 mm, which is consistent with the theoretical calculation.
引用
收藏
页码:4385 / 4390
页数:6
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