Multiple-Octave-Spanning Vibration Sensing Based on Simultaneous Vector Demodulation of 499 Fizeau Interference Signals from Identical Ultra-Weak Fiber Bragg Gratings Over 2.5 km

Multiple-Octave-Spanning Vibration Sensing Based on Simultaneous Vector Demodulation of 499 Fizeau Interference Signals from Identical Ultra-Weak Fiber Bragg Gratings Over 2.5 km

Multi-point vibration sensing at the low frequency range of 0.5–100 Hz is of vital importance for applications such as seismic monitoring and underwater acoustic imaging. Location-resolved multi-point sensing using a single fiber and a single demodulation system can greatly reduce system deployment...

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Bibliographic Details
Main Authors: Yi Li, Li Qian, Ciming Zhou, Dian Fan, Qiannan Xu, Yandong Pang, Xi Chen, Jianguan Tang
Format: Article
Language:English
Published: MDPI AG 2018-01-01
Series:Sensors
Subjects:
fiber-optic sensors
fiber Bragg gratings
vibration sensing
low-frequency range
Online Access:http://www.mdpi.com/1424-8220/18/1/210

Internet

http://www.mdpi.com/1424-8220/18/1/210

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