Photonic Sensors, Volume. 11, Issue 1, 91(2021)
FBG Arrays for Quasi-Distributed Sensing: A Review
Fiber Bragg grating (FBG) array is a powerful technique for quasi-distributed sensing along the entire length of sensing fiber with fast response and high precision. It has been widely used for temperature, strain, and vibration monitoring. In this review work, an overview on the recent advances of FBG arrays is conducted. Firstly, the fabrication methods of FBG array are reviewed, which include femtosecond laser system and online writing technique. Then, the demodulation techniques for FBG arrays are presented and discussed. Distributed static sensing can be performed by demodulating wavelength shift of each FBG, while phase demodulation techniques with low noise are employed for dynamic vibration sensing. Simultaneous distributed dynamic and static sensing system based on FBG array is also outlined. Finally, possible future directions are discussed and concluded. It is believed that the FBG array has great development potential and application prospect.
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Chengli LI, Jianguan TANG, Cheng CHENG, Longbao CAI, Minghong YANG. FBG Arrays for Quasi-Distributed Sensing: A Review[J]. Photonic Sensors, 2021, 11(1): 91
Category: Review
Received: Nov. 11, 2020
Accepted: Dec. 27, 2020
Published Online: May. 14, 2021
The Author Email: YANG Minghong (minghong.yang@whut.edu.cn)