激光器
传输(电信)
灵敏度(控制系统)
光纤激光器
光学
信号(编程语言)
混合(物理)
随机存取
材料科学
计算机科学
电子工程
物理
电信
工程类
量子力学
程序设计语言
操作系统
作者
Jun Hu,Ruifeng Li,Zhenjiang Hu,H. Li,Yaozhong Yang,Hongtao Li,Jialiang Lv,Qi Yu,Yunkun Zhao,Benli Yu,Liang Lu
出处
期刊:APL photonics
[American Institute of Physics]
日期:2024-03-01
卷期号:9 (3)
摘要
This study first demonstrates that the random distributed feedback fiber laser (RDFL) can be implemented for sensing detection by using the self-mixing effect as a sensing mechanism. By constructing a compact self-mixing velocimeter based on Er-doped RDFL with the integration of a laser, sensing element, and transmission platform, we successfully measured the minimum detectable feedback intensity of 38.65 fW for the velocity signal, corresponding to 0.55 photons per Doppler cycle, exhibiting ultra-high sensitivity dynamics characteristics. In addition, the velocity measurement of a non-cooperative target at a single-channel distance of 100 km is accomplished because of the natural feature of long-distance transmission for the random distributed feedback fiber lasers, which greatly improves the ultra-long detection range in the field of self-mixing sensing. The proposed sensing scheme not only unveils a fresh perspective on the exploration of random fiber laser sensing but also showcases its diverse and wide-ranging applications within the realm of remote sensing measurements.
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