Journal ArticleDOI
Fiber optic differential interferometer
Libo Yuan,Li Min Zhou,Wei Jin +2 more
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TLDR
A twin-reflective mirror demodulator was used in the differential interferometer, which can be used as a fiber optic sensor to measure the elongation of the fiber or strain substressed on the fiber and has the advantage that it can automatically compensate for temperature-induced variations in the refractive index and thermal expansion of the silica fibers.Abstract:
Based on low-coherence interferometry in standard single-mode fibers, a differential interferometer has been proposed. A twin-reflective mirror demodulator was used in the differential interferometer. This interferometer can be used as a fiber optic sensor to measure the elongation of the fiber or strain substressed on the fiber and has the advantage that it can automatically compensate for temperature-induced variations in the refractive index and thermal expansion of the silica fibers.read more
Citations
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Development of a New Optical Reference Technique in the Field of Biology
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Push–pull fiber optic inclinometer based on a Mach–Zehnder optical low-coherence reflectometor
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Journal ArticleDOI
Reconstruction of Fabry–Perot cavity interferometer nanometer micro-displacement based on Hilbert transform
TL;DR: In this paper, a novel reconstruction method of nanometer micro-displacement of Fabry-Perot (F-P) interference is proposed, and Hilbert transforms are performed for F-P interference fringes, and the obtained signal performs tangent operation with the original signal.
References
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Journal ArticleDOI
Fiber optics strain gauge.
C D Butter,G. B. Hocker +1 more
TL;DR: A fiber optics strain gauge measuring strains of <0.4 × 10.2 × 10 m 1 is demonstrated, utilizing the change in optical pathlength caused by strain in a fiber.
Journal ArticleDOI
White-light interferometric multimode fiber-optic strain sensor
Claude Belleville,Gaetan Duplain +1 more
TL;DR: A white-light interferometric extrinsic Fabry-Perot strain sensor that uses a multimode fiber and the design of a thermally autocompensated strain sensor is presented.
Journal ArticleDOI
Fiber-optic strain gauge
TL;DR: In this article, a fiber-optic strain gauges consisting of permanent microbends were fabricated and various properties were measured, such as their strain sensitivity as a function of microbend amplitude and their transduction mechanism.
Journal ArticleDOI
White-light scanning fiber Michelson interferometer for absolute position-distance measurement.
TL;DR: A white-light fiber interferometer working in the spatial domain, using two fiber ends in a hollow tube as the sensing head and an electric magnetic actuator-mirror reflector as the path-compensation-measurement element, is presented.
Journal ArticleDOI
Sensitivity coefficient evaluation of an embedded fiber-optic strain sensor
Libo Yuan,Li Min Zhou +1 more
TL;DR: In this article, a simple model is developed for evaluating the interaction between the surrounding matrix and a length of optical fiber embedded in it, in which a sensitivity coefficient K(L) is used to describe the percentage of strain applied to the composite actually transferred to the fiber.