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Micro-Displacement Sensor Based on a Hollow-Core Photonic Crystal Fiber
Departamento de Ingeniería Eléctrica y Electrónica, Universidad Pública de Navarra, Campus de Arrosadía, 31006 Pamplona-Navarra, Spain
Instituto de Engenharia de Sistemas e Computadores do Porto (INESC Porto), Departamento de Física, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
* Author to whom correspondence should be addressed.
Received: 15 October 2012; in revised form: 3 December 2012 / Accepted: 12 December 2012 / Published: 17 December 2012
Abstract: A sensing head based on a hollow-core photonic crystal fiber for in-reflection measurement of micro-displacements is presented. The sensing structure takes advantage of the multimodal behavior of a short segment of hollow-core photonic crystal fiber in-reflection, being spliced to a single mode fiber at its other end. A modal interferometer is obtained when the sensing head is close to a mirror, through which displacement is measured.
Keywords: fiber optic sensor; photonic crystal fiber; micro-displacement sensor; modal interferometer
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Cite This Article
MDPI and ACS Style
Pinto, A.M.R.; Baptista, J.M.; Santos, J.L.; Lopez-Amo, M.; Frazão, O. Micro-Displacement Sensor Based on a Hollow-Core Photonic Crystal Fiber. Sensors 2012, 12, 17497-17503.
Pinto AMR, Baptista JM, Santos JL, Lopez-Amo M, Frazão O. Micro-Displacement Sensor Based on a Hollow-Core Photonic Crystal Fiber. Sensors. 2012; 12(12):17497-17503.
Pinto, Ana M.R.; Baptista, José M.; Santos, José L.; Lopez-Amo, Manuel; Frazão, Orlando. 2012. "Micro-Displacement Sensor Based on a Hollow-Core Photonic Crystal Fiber." Sensors 12, no. 12: 17497-17503.