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
Citations
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Journal ArticleDOI
A High Sensitivity Optical Fiber Sensor for GIS Partial Discharge Detection
TL;DR: In this article, a high sensitivity optical fiber sensor for detecting the acoustic emission generated by the partial discharge in gas-insulated switchgear (GIS) was proposed, and the experimental results show that the detectable partial discharge initial voltage for the proposed optical system is 17.1% lower than that for the conventional lead zirconate titanate (PZT) system.
Journal ArticleDOI
Review of fiber optic sensors for corrosion monitoring in reinforced concrete
Liang Fan,Yi Bao +1 more
TL;DR: In this paper, the authors reviewed representative types of fiber optic sensors for monitoring corrosion in reinforced concrete, including grating sensors, interferometer sensors, distributed sensors, and reflectometer sensors.
Journal ArticleDOI
High-resolution, large dynamic range fiber-optic thermometer with cascaded Fabry-Perot cavities.
TL;DR: A fiber-optic thermometer based on dual Fabry-Perot interferometers made from the same material, but with different cavity lengths, which enables unambiguous recognition of the dense fringes associated with the thick FPI over the free-spectral range determined by the thin FPI is proposed.
Journal ArticleDOI
Investigation of an in-line fiber Mach–Zehnder interferometer based on peanut-shape structure for refractive index sensing
TL;DR: In this article, an in-line fiber Mach-Zehnder interferometer for refractive index (RI) sensing was proposed, and the interferometers were fabricated by cascading two peanut-shape structures in the single mode fiber using the commercial fusion splicer.
Journal ArticleDOI
Optical Interferometric Pressure Sensor Based on a Buckled Beam With Low-Temperature Cross-Sensitivity
TL;DR: The pressure measurement sensitivity of the novel sensor is improved and could be flexibly adjusted through the modification of the initial setting of the buckled beam, believed to be an excellent candidate for monitoring the environmental pressure in various fields.
References
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MonographDOI
Introduction to Optics
TL;DR: In this paper, the authors present a comprehensive and engaging introduction to optics for intermediate and upper level undergraduate physics and engineering students, which allows instructors to select specialized content to suit individual curricular needs and goals.
Journal ArticleDOI
Fiber-Optic Sensors Based on Surface Plasmon Resonance: A Comprehensive Review
TL;DR: A detailed mechanism of the surface plasmon resonance (SPR) technique for sensing purposes has been discussed in this paper, where different new techniques and models in this area that have been introduced are discussed in quite a detail.
Journal ArticleDOI
Tapered fiber Mach–Zehnder interferometer for simultaneous measurement of refractive index and temperature
TL;DR: In this paper, an approach to achieve simultaneous measurement of refractive index and temperature is proposed by using a Mach-Zehnder interferometer realized on tapered single-mode optical fiber.
Journal ArticleDOI
Fiber Fabry-Perot cavity with high finesse
TL;DR: In this article, a fiber-based Fabry-Perot cavity with CO2 laser-machined mirrors was realized, which combines very small size, high finesse, small waist and mode volume, and good mode matching between the fiber and cavity modes.
Journal ArticleDOI
All-fiber Mach-Zehnder type interferometers formed in photonic crystal fiber.
TL;DR: As potential applications of the all-PCF interferometer, strain sensing is experimentally demonstrated and ultra-high temperature sensing is proposed.