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
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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
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Journal ArticleDOI
An all fiber intrinsic Fabry-Perot Interferometer based on an air-microcavity.
Daniel Jauregui-Vazquez,Julian M. Estudillo-Ayala,Roberto Rojas-Laguna,Everardo Vargas-Rodriguez,Juan Manuel Sierra-Hernández,Juan C. Hernandez-Garcia,R. I. Mata-Chavez +6 more
TL;DR: In this work an Intrinsic Fabry-Perot Interferometer (IFPI) based on an air-microcavity is presented and the spectral response of the IFPI is experimentally characterized.
Journal ArticleDOI
Miniaturized Tapered Photonic Crystal Fiber Mach–Zehnder Interferometer for Enhanced Refractive Index Sensing
TL;DR: In this article, a Mach-Zehnder interferometer is constructed using sharply tapered photonic crystal fiber (PCF) for highly sensitive ambient refractive index (RI) measurement, which is fabricated by fusion splicing a small stub of PCF between standard singlemode fibers with fully collapsed air holes of the PCF in a splicing region.
Journal ArticleDOI
Real-time optical fiber sensors based on light diffusing microlens arrays
Mohamed Elsherif,Mohamed Elsherif,Rosalia Moreddu,Muhammad Hassan,Ali K. Yetisen,Haider Butt +5 more
TL;DR: Real-time optical fiber sensors to determine the volumetric modulation of stimuli-responsive polymers are developed and may have application in point-of-care diagnostics, continuous biomarker monitoring, and critical care sensing devices.
Journal ArticleDOI
Integrated Sensors in Advanced Composites: A Critical Review
TL;DR: In this paper, structural health monitoring (SHM) applications for strain/temperature measurements in advanced matrices have attracted considerable attention in structural health sensing applications, including piezoelectric, piezoresistive, and optical fiber sensors.
Journal ArticleDOI
Liquid Hydrostatic Pressure Optical Sensor Based on Micro-Cavity Produced by the Catastrophic Fuse Effect
Maria de Fátima Domingues,Tiago Paixão,Esequiel Mesquita,Nélia Alberto,Ana R. Frias,Rute A. S. Ferreira,Humberto Varum,Paulo Antunes,Paulo André +8 more
TL;DR: In this article, an optical fiber hydrostatic pressure sensor based on micro-cavities generated by the fiber fuse effect is presented, which is manufactured through the recycling of optical fiber destroyed by the optical fuse effect, being therefore a cost-effective solution, when compared with other similar microcavity-based solutions.
References
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