期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 31, 期 1, 页码 19-22出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2018.2880793
关键词
Fiber optics sensor; fiber Bragg grating (FBG); injection-locking; Pound-Drever-Hall (PDH) technique
资金
- National Key RD Plan of China [2017YFB0405500]
- National Natural Science Foundation of China [61327812, 61620106015]
A novel active fiber grating sensor system based on injection-locking and Pound-Drever-Hall techniques is presented. In demonstrational experiments, epsilon-level strain resolution is achieved with a very low probe power down to -70 dBm, which is at least 50 dB lower compared with the classical PoundDrever- Hall technique. Besides, the measurement range of the sensor can be adjusted over a large scale up to 17 dB by changing the injection ratio. With the ultrahigh resolution, ultralow probe power, and adjustable measurement range, the proposed sensor has great potential in high-resolution and large-scale sensor networks.
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