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Recent Progress in the Performance Enhancement of Phase-Sensitive OTDR Vibration Sensing Systems

1
Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China
2
College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China
3
State Key Laboratory of Coal and CBM Co-mining, Jincheng 048000, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(7), 1709; https://doi.org/10.3390/s19071709
Received: 1 March 2019 / Revised: 25 March 2019 / Accepted: 29 March 2019 / Published: 10 April 2019
(This article belongs to the Section Physical Sensors)
Recently, phase-sensitive Optical Time-Domain Reflectometry (Φ-OTDR)-based vibration sensor systems have gained the interest of many researchers and some efforts have been undertaken to push the performance limitations of Φ-OTDR sensor systems. Thus, progress in different areas of their performance evaluation factors such as improvement of the signal-to-noise ratio (SNR), spatial resolution (SR) in the sub-meter range, enlargement of the sensing range, increased frequency response bandwidth over the conventional limits, phase signal demodulation and chirped-pulse Φ-OTDR for quantitative measurement have been realized. This paper presents an overview of the recent progress in Φ-OTDR-based vibration sensing systems in the different areas mentioned above. View Full-Text
Keywords: optical fiber-sensors; Rayleigh backscattering; Φ-OTDR system; vibration measurement optical fiber-sensors; Rayleigh backscattering; Φ-OTDR system; vibration measurement
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Zinsou, R.; Liu, X.; Wang, Y.; Zhang, J.; Wang, Y.; Jin, B. Recent Progress in the Performance Enhancement of Phase-Sensitive OTDR Vibration Sensing Systems. Sensors 2019, 19, 1709.

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