Interferometric Fiber Optic Sensors
Byeong Ha Lee,Youngho Kim,Kwan Seob Park,Joo Beom Eom,Myoung Jin Kim,Byung Sup Rho,Hae Young Choi +6 more
TLDR
Each type of interferometric sensor is reviewed in terms of operating principles, fabrication methods, and application fields and some specific examples of recently reported interferometeric sensor technologies are presented in detail to show their large potential in practical applications.Abstract:
Fiber optic interferometers to sense various physical parameters including temperature, strain, pressure, and refractive index have been widely investigated. They can be categorized into four types: Fabry-Perot, Mach-Zehnder, Michelson, and Sagnac. In this paper, each type of interferometric sensor is reviewed in terms of operating principles, fabrication methods, and application fields. Some specific examples of recently reported interferometeric sensor technologies are presented in detail to show their large potential in practical applications. Some of the simple to fabricate but exceedingly effective Fabry-Perot interferometers, implemented in both extrinsic and intrinsic structures, are discussed. Also, a wide variety of Mach-Zehnder and Michelson interferometric sensors based on photonic crystal fibers are introduced along with their remarkable sensing performances. Finally, the simultaneous multi-parameter sensing capability of a pair of long period fiber grating (LPG) is presented in two types of structures; one is the Mach-Zehnder interferometer formed in a double cladding fiber and the other is the highly sensitive Sagnac interferometer cascaded with an LPG pair.read more
Citations
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Journal ArticleDOI
Nonadiabatic fiber taper-based Mach-Zehnder interferometer for refractive index sensing
Linlin Xu,Ying Li,Baojun Li +2 more
TL;DR: In this paper, a Mach-Zehnder interferometer based on a nonadiabatic fiber taper is proposed for refractive index (RI) sensing only the first order cladding guided mode is excited in the down-taper.
Journal ArticleDOI
Enhancement of Refractive Index Sensitivity by Bending a Core-Offset In-Line Fiber Mach–Zehnder Interferometer
Fangda Yu,Peng Xue,Jie Zheng +2 more
TL;DR: In this article, a bent core-offset in-line fiber Mach-Zehnder interferometer for refractive index (RI) sensing was proposed, which was fabricated by the splicing method and consists of a standard singlemode fiber sandwiched between two core offset joints, with a core offset distance of about 6 $\mu \text{m}$.
Journal ArticleDOI
Highly sensitive curvature and displacement sensing setup based on an all fiber micro Fabry–Perot interferometer
Daniel Jauregui-Vazquez,Julian M. Estudillo-Ayala,A. Castillo-Guzman,Roberto Rojas-Laguna,Romeo Selvas-Aguilar,Everardo Vargas-Rodriguez,Juan Manuel Sierra-Hernández,V. Guzmán-Ramos,A. Flores-Balderas +8 more
TL;DR: In this article, a highly sensitive curvature and displacement sensing arrangement based on an all optical fiber micro Fabry-Perot Interferometer (MFPI) is presented, where the MFPI spectral fringes contrast is decreased due to curvature effects occurring within a segment of single mode fiber (SMF).
Journal ArticleDOI
Analysis of viscoelastic properties influence on strain and temperature responses of Fabry-Perot cavities based on UV-curable resins
TL;DR: In this paper, the analysis of Fabry-Perot interferometers (FPIs) with cavities based on viscoelastic materials is presented, where the influence of the visco-elastic properties of the materials are analyzed as function of temperature, uniaxial strain and the simultaneous variation of both parameters.
Book ChapterDOI
Distributed Temperature Sensing for Soil Physical Measurements and Its Similarity to Heat Pulse Method
TL;DR: In this paper, a literature review summarizes the interdisciplinary results obtained by theoretical, experimental, and numerical methods in laboratory and field investigations of distributed temperature sensing (DTS) for soil temperature, thermal properties, and water/moisture measurement.
References
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Journal ArticleDOI
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