Random Bragg-grating-based wavelength-tunable random fiber laser with a full-open cavity

被引：11
作者：
Lu, Bing [1 ,2 ]
Zhang, Wentao [1 ,2 ]
Huang, Wenzhu [1 ,2 ]
Li, Fang [1 ,2 ]
机构：
[1] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
[2] Chinese Acad Sci, Inst Semicond, Optoelect Syst Lab, Beijing 100083, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2021年 / 19卷 / 09期
基金：
中国国家自然科学基金;
关键词：
tunable random fiber laser; random Bragg grating array; full-open cavity; ARRAY;
D O I：
10.3788/COL202119.091203
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A full-open-cavity wavelength-tunable random fiber laser (WT-RFL) with compact structure and hundreds of picometers tuning range is proposed and demonstrated. A pi fiber Bragg grating (FBG) is used in the WT-RFL as a filter to select lasing wavelengths. The two random Bragg grating arrays (RBGAs) and a section of high gain erbium-doped fiber result in a low lasing threshold and high stability. A numerical model to analyze the tunable characteristics is developed. The results show that the laser threshold is 22 mW, and the maximum peak-power fluctuation is 0.55 dB. To the best of our knowledge, it is the first time that a compact and full-open-cavity WT-RFL with two RBGAs and a pi-FBG is proposed.
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页数：5
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