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
Lossy Magnetic Fluid-Encapsulated Optical Fiber Magnetometer: Nickel Substitution Effects
TL;DR: In this article, a simple and compact highly sensitive optical fiber magnetometer was proposed and experimentally established using nickel substituted magnetic fluids as the sensing nano-materials, which demonstrated an enhanced magneto induced tunability of the refractive index in the sensing region and led to the exhibition of a stronger variation of output intensity loss or recording a higher sensitivity.
Proceedings ArticleDOI
Ultracompact optical fiber Fabry-Perot interferometer based on in-line integrated sub-micron silicon film
TL;DR: In this paper, an ultra-compact in-line fiber-optic Fabry-Perot interferometer is presented, which consists of a thin amorphous silicon layer in line integrated into a standard single-mode optical fiber by means of an electric arc discharge technique.
Journal ArticleDOI
Implementation of Pressure Sensor of Optical Fiber Using Optical Interferometer
S. Al-Ithawi,A. Hadi +1 more
TL;DR: In this article, two types of interferometric fiber Optic Sensor (Fabry-Perot and Modal Sensor) have been demonstrate and investigated, the main parameter studied of this contribute is the sensitivity, the strain could be induced by make a stress on the optical fiber.
Proceedings ArticleDOI
Improved long period fibre gratings sensing devices coated with thin films
TL;DR: In this paper, the authors present the recent developments and applications of these kind of sensors and present a short review of these kinds of sensors for gain-flattening and band-rejection applications.
Book ChapterDOI
Optical Probes and Biosensors
TL;DR: Of particular interest for biosensing processes are optical fiber probes, nanoparticle-based sensors, optical fiber and waveguide substance sensors, photodetector arrays, fiber Bragg grating sensors, and surface plasmon resonance devices.
References
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Journal ArticleDOI
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