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Sensors 2016, 16(9), 1424; doi:10.3390/s16091424

Research Progress on F-P Interference—Based Fiber-Optic Sensors

1
Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
2
State Key Laboratory of Optical Communication Technologies and Networks, Wuhan Research Institute of Posts Telecommunications, Wuhan 430074, China
3
Specially Functional Fiber Engineering Technology Research Center of Guangdong Higher Education Institutes, Guangdong Provincial Engineering Technology Research Center for Microstructured Functional Fibers and Devices, South China Normal University, Guangzhou 510006, China
*
Author to whom correspondence should be addressed.
Academic Editor: Gangbing Song
Received: 4 June 2016 / Revised: 24 August 2016 / Accepted: 30 August 2016 / Published: 3 September 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [2542 KB, uploaded 3 September 2016]   |  

Abstract

We review our works on Fabry-Perot (F-P) interferometric fiber-optic sensors with various applications. We give a general model of F-P interferometric optical fiber sensors including diffraction loss caused by the beam divergence and the Gouy phase shift. Based on different structures of an F-P cavity formed on the end of a single-mode fiber, the F-P interferometric optical sensor has been extended to measurements of the refractive index (RI) of liquids and solids, temperature as well as small displacement. The RI of liquids and solids can be obtained by monitoring the fringe contrast related to Fresnel reflections, while the ambient temperature and small displacement can be obtained by monitoring the wavelength shift of the interference fringes. The F-P interferometric fiber-optic sensors can be used for many scientific and technological applications. View Full-Text
Keywords: interferometric fiber optic sensor; F-P cavity; fringe contrast; wavelength shift interferometric fiber optic sensor; F-P cavity; fringe contrast; wavelength shift
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Huang, Y.W.; Tao, J.; Huang, X.G. Research Progress on F-P Interference—Based Fiber-Optic Sensors. Sensors 2016, 16, 1424.

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