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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Proceedings ArticleDOI
Simple BOTDA temperature sensor based on distributed Brillouin phase-shift measurements within a Sagnac interferometer
Alexia Lopez-Gil,Xabier Angulo-Vinuesa,Alejandro Dominguez-Lopez,Sonia Martin-Lopez,Miguel Gonzalez-Herraez +4 more
TL;DR: In this paper, an extremely simple BOTDA scheme capable of delivering distributed Brillouin Phase Shift measurements along an optical fiber is presented. But the technique is advantageous as, in comparison with previous methods, no complex modulation, no sharp filtering and no highbandwidth detection is needed.
Chemical detection and sensing using optical interferometry
TL;DR: Thesis (Master, Electrical & Computer Engineering) as mentioned in this paper, 2013-09-19 22:21:38.836, presented at Queen's University, Toronto, Canada.
Journal ArticleDOI
Fiber loop ringdown humidity sensor.
Haifa Alali,Chuji Wang +1 more
TL;DR: An optical fiber relative humidity sensor based on the evanescent field-fiber loop ringdown (EF-FLRD) technique is demonstrated and demonstrated a fast response, high sensitivity, and excellent reproducibility and reversibly.
Journal ArticleDOI
Optical Fiber Probe Microcantilever Sensor Based on Fabry–Perot Interferometer
TL;DR: In this paper , a wide variety of optical fiber probe microcantilever sensors based on Fabry-Perot interferometer is presented, where fabrication methods, materials, and sensing applications are discussed in detail.
Journal ArticleDOI
Common path interferometeric analysis of a planar polymer optical waveguide having adlayer of 2D materials for biosensing applications
TL;DR: Sensitivity of planar polymer optical waveguide having adlayer of MoS2, WS2, MoSe2, WSe2 are estimated using common path Mach-Zehnder interferometer analyses.
References
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