Proceedings ArticleDOI
Localized and distributed fiber optic strain sensors based on white light interferometric techniques
Libo Yuan,Li Min Zhou,Wei Jin +2 more
- Vol. 4077, pp 65-68
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TLDR
In this article, a fiber optic localized strain sensor and multiplexing strain-sensing techniques are demonstrated for smart structures, where the spatial division limitation of fiber optic sensors is discussed and application examples such as cable strain measuring of cable-stayed bridge model, inside strain measurements for concrete specimens and temperature monitoring are also given.Abstract:
Strain, deformation and temperature measurements constitute the most interesting parameters to be monitored in smart structures White-light interferometry offers these performances even for long-term measurements Based on the Michelson interferometer, a fiber optic localized strain sensor and multiplexing strain-sensing techniques are demonstrated in this paper Related problem about the spatial division limitation of fiber optic sensors is discussed Finally, application examples such as cable strain measuring of cable-stayed bridge model, inside strain measurements for concrete specimens and temperature monitoring are also givenread more
References
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Journal ArticleDOI
Coherence multiplexing of remote fibre optic fabry-perot sensing system
TL;DR: In this article, a monomode fibre optic coherence multiplexing sensor system incorporating passive miniature fibre optic probes is demonstrated using a coherence tuned local interferometer to sequentially interrogate the individual sensors.
Journal ArticleDOI
Embedded white light interferometer fibre optic strain sensor for monitoring crack-tip opening in concrete beams
Libo Yuan,Fahard Ansari +1 more
TL;DR: In this article, a white light fiber optic interferometer was used to sense strain in a fiber embedded in a specimen concrete beam and a calibration procedure was developed by which the optical signals were converted into displacements.
Journal ArticleDOI
1 x N star coupler as a distributed fiber-optic strain sensor in a white-light interferometer.
Libo Yuan,Li Min Zhou +1 more
TL;DR: A novel technique of using a 1 x N star fiber optic coupler as a distributed strain sensor in a white-light interferometer to measure the distribution of strain is presented and the measuring principle and 1 x 4 star coupler with four fiber optic strain sensors are demonstrated.
Proceedings ArticleDOI
Recent progress in interferometric fiber sensor technology
TL;DR: In this paper, the authors summarized recent developments in interferometric fiber sensors for physical field applications, based on two-beam interferometrics configurations, mainly the all-fiber Mach-Zehnder interferometer.
Journal ArticleDOI
White-light interferometric fiber-optic strain sensor from three-peak-wavelength broadband LED source
TL;DR: Experimental and theoretical analyses show that this special three-peak-wavelength LED source can be used in white-light interferometry to simplify the problem of central-fringe identification.