Distributed fiber strain and vibration sensor based on Brillouin optical time-domain reflectometry and polarization optical time-domain reflectometry

Wang, Feng; Zhang, Xuping; Wang, Xiangchuan; Chen, Haisheng

doi:10.1364/ol.38.002437

Cited by 36 publications

(10 citation statements)

References 8 publications

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“…31 Due to these limitations, BOTDR-based dynamic strain sensors have limited frequency range. Wang et al 32 demonstrated such a system with a maximum detectable frequency of 11 Hz over 4 km of sensing fibre. However, the proposed setup had a poor strain sensitivity of 100 µε with a spatial resolution of 10 m.…”

Section: A Brillouin Optical Time Domain Reflectometry (Botdr)mentioning

confidence: 99%

Contributed Review: Distributed optical fibre dynamic strain sensing

Masoudi

Newson

2016

Review of Scientific Instruments

214

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Extensive research on Brillouin- and Raman-based distributed optical fibre sensors over the past two decades has resulted in the commercialization of distributed sensors capable of measuring static and quasi-static phenomena such as temperature and strain. Recently, the focus has been shifted towards developing distributed sensors for measurement of dynamic phenomena such as dynamic strain and sound waves. This article reviews the current state of the art distributed optical fibre sensors capable of quantifying dynamic vibrations. The most important aspect of Rayleigh and Brillouin scattering processes which have been used for distributed dynamic measurement are studied. The principle of the sensing techniques used to measure dynamic perturbations are analyzed followed by a case study of the most recent advances in this field. It is shown that the Rayleigh-based sensors have longer sensing range and higher frequency range, but their spatial resolution is limited to 1 m. On the other hand, the Brillouin-based sensors have shown a higher spatial resolution, but relatively lower frequency and sensing ranges.

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Section: A Brillouin Optical Time Domain Reflectometry (Botdr)mentioning

confidence: 99%

Contributed Review: Distributed optical fibre dynamic strain sensing

Masoudi

Newson

2016

Review of Scientific Instruments

214

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“…Then the stress of fiber is determined using Eq. (4) and (5). Apparently, the vibration can be continuously detected at each frequency shift.…”

Section: Methodsmentioning

confidence: 99%

“…Many kinds of distributed optical fiber sensors (DOFS) have been developed for the monitoring of structural health and have gotten satisfying results [1][2][3][4][5][6]. However, only a few of them can monitor both the vibration and strain/temperature simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Distributed Strain and Vibration Sensing System Based on Phase-Sensitive OTDR

Zhou

Wang

et al. 2015

IEEE Photon. Technol. Lett.

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A system based on phase-sensitive optical time domain reflectometry (Φ-OTDR) is proposed for simultaneously strain and vibration sensing. The strain of fiber is detected by comparing the patterns of signal for different laser frequencies, and the vibration of fiber is detected simultaneously from the signals for any certain laser frequency. During the measurement, frequencies of the probe optical pulses are modulated sequentially in ascending or descending order. Using the signals generated by optical pulses with the same frequency, the vibration of fiber is detected with fast response speed; using that with different frequencies, the strain of fiber is detected with high resolution. In our experiment, a sensing system with 2 m spatial resolution, up to 1 kHz frequency measurement range and 10 n strain resolution is realized for a 9 km sensing fiber length. Index Terms-Distributed optical fiber sensor, phase-sensitive optical time domain reflectometry, strain measurement, vibration measurement

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“…Therefore, a novel kind of POTDR intrusion sensor with simple detection algorithm, which was based on the sliding standard deviation of the difference between two consecutive POTDR traces, was demonstrated [ 113 ]. Experimental results showed that an intrusion leading to a 1.5-cm fiber displacement could be detected, with an error on the intrusion localization of 5 m over a total fiber length of 472.5 m. Later, a distributed fiber strain and vibration sensor that effectively combined Brillouin OTDR and POTDR was proposed, a 10-m SR was realized over a 4-km sensing distance [ 114 ]. Afterwards, by using 2nd-order Raman amplification, a long-distance (106 km) POTDR fiber fence system was demonstrated [ 115 ].…”

Section: Distributed Fiber-optic Vibration Sensing Technologymentioning

confidence: 99%

Distributed Fiber-Optic Sensors for Vibration Detection

Liu

Jin

Bai

et al. 2016

Sensors

186

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Distributed fiber-optic vibration sensors receive extensive investigation and play a significant role in the sensor panorama. Optical parameters such as light intensity, phase, polarization state, or light frequency will change when external vibration is applied on the sensing fiber. In this paper, various technologies of distributed fiber-optic vibration sensing are reviewed, from interferometric sensing technology, such as Sagnac, Mach–Zehnder, and Michelson, to backscattering-based sensing technology, such as phase-sensitive optical time domain reflectometer, polarization-optical time domain reflectometer, optical frequency domain reflectometer, as well as some combinations of interferometric and backscattering-based techniques. Their operation principles are presented and recent research efforts are also included. Finally, the applications of distributed fiber-optic vibration sensors are summarized, which mainly include structural health monitoring and perimeter security, etc. Overall, distributed fiber-optic vibration sensors possess the advantages of large-scale monitoring, good concealment, excellent flexibility, and immunity to electromagnetic interference, and thus show considerable potential for a variety of practical applications.

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Distributed fiber strain and vibration sensor based on Brillouin optical time-domain reflectometry and polarization optical time-domain reflectometry

Cited by 36 publications

References 8 publications

Contributed Review: Distributed optical fibre dynamic strain sensing

Contributed Review: Distributed optical fibre dynamic strain sensing

Distributed Strain and Vibration Sensing System Based on Phase-Sensitive OTDR

Distributed Fiber-Optic Sensors for Vibration Detection

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