光学
光纤布拉格光栅
材料科学
波长
激光阈值
光纤激光器
飞秒
激光器
光电子学
长周期光纤光栅
切趾
磷
光纤
光纤传感器
色散位移光纤
物理
作者
Min Shen,Deng Jing,Yanxin Li,Xuewen Shu
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-10-17
卷期号:47 (21): 5473-5473
被引量:4
摘要
We propose and demonstrate a multi-wavelength random fiber laser (RFL) based on a novel, to the best of our knowledge, compact apodized fiber Bragg grating array (AFBGA). The AFBGA is fabricated by a femtosecond laser with the point-by-point tilted parallel inscription method. The characteristics of the AFBGA can be flexibly controlled in the inscription process. Hybrid erbium–Raman gain is used in the RFL and reduces the lasing threshold to sub-watt level. Stable emissions at two to six wavelengths are achieved with the corresponding AFBGAs, and more wavelengths are expected with higher pump power and AFBGAs containing more channels. A thermo-electric cooler is employed to improve the stability of the RFL, and the maximum wavelength and power fluctuations of a three-wavelength RFL are 64 pm and 0.35 dB, respectively. With flexible AFBGA fabrication and simple structure, the proposed RFL enriches the choice of multi-wavelength devices and has significant potential in practical applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI