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 (Basel) 2019;
19:s19071709. [PMID:
30974777 PMCID:
PMC6479340 DOI:
10.3390/s19071709]
[Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/25/2019] [Accepted: 03/29/2019] [Indexed: 11/16/2022]
Abstract
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.
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