Temperature- and strain-independent torsion sensor using a fiber loop mirror based on suspended twin-core fiber

Orlando Frazão * Ricardo M. Silva Jens Kobelke and Kay Schuster

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Temperature- and strain-independent torsion sensor using a fiber loop mirror based on suspended twin-core fiber

机译：使用基于悬浮双芯光纤的光纤环形镜的温度和应变无关的扭转传感器

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In this Letter, we present a fiber loop mirror configuration based on a suspended twin-core fiber for sensing applica-ntions. Using the suspended twin-core fiber, the fringe pattern is due to the differential optical patch of the light in thentwo cores associated with a refractive index difference of ~10−3, which indicates an advantage of this approachncompared with those based on high-birefringent fibers, namely, the possibility of using a small length of fiber.nThe sensing configuration was characterized for torsion, temperature, and strain. Using the fast Fourier transformntechnique, it is possible to obtain measurand-induced amplitude variations of the fringe pattern. The results ob-ntained indicate the viability of a temperature- and strain-independent torsion sensor. © 2010 Optical Societynof America

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《Optics Letters》 |2010年第16期|p.2777-2779|共3页
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Orlando Frazão * Ricardo M. Silva Jens Kobelke and Kay Schuster;
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INESC Porto—Instituto de Engenharia de Sistemas e Computadores do Porto,Rua do Campo Alegre 687, 4169-007, Porto, Portugal2IPHT—Institute of Photonic Technology, D-07745 Jena, Germany;

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Temperature- and strain-independent torsion sensor using a fiber loop mirror based on suspended twin-core fiber

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