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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Broadband Vibration Detection in Tissue Phantoms Using a Fiber Fabry–Perot Cavity
TL;DR: This miniaturized and sensitive vibration sensor can provide comprehensive information regarding strain response and the resultant ultrasound waveforms with nanostrain sensitivity.
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Optical Fiber Sensors by Direct Laser Processing: A Review.
D. Pallarés-Aldeiturriaga,Pablo Roldán-Varona,Pablo Roldán-Varona,Luis Rodriguez-Cobo,Jose Miguel Lopez-Higuera,Jose Miguel Lopez-Higuera +5 more
TL;DR: The most important transducing structures carried out by laser processing in optical fiber are shown and the enhanced Rayleigh backscattering fibers by femtosecond laser dots inscription are discussed, as a consequence of the new sensing possibilities they enable.
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Perovskite Quantum Dots Based Optical Fabry–Pérot Pressure Sensor
TL;DR: In this paper, the perovskite quantum dots are emerging as functional materials for modern optics and optoelectronics due to their superior optical properties and easy integration, and they have been demonstrated novel optical properties.
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Measurement of In-Fiber Refractive Index Change Using a Mach–Zehnder Interferometer
TL;DR: In this article, the authors used a fiber optic Mach-Zehnder interferometer to measure core refractive index changes written by an ultrafast laser irradiation, which was constructed by splicing a slightly misaligned stub of standard singlemode fiber between the lead-in and lead-out optical fibers.
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Advances in photonic crystal fiber: sensing and supercontinuum generation applications
TL;DR: In this paper , a review summarizes and analyses recent advances in the design of photonic crystal fiber (PCF) sensors for sensing and supercontinuum generation applications, and a prospect for future advancements in the development of PCF sensors for point-of-care and clinical use is highlighted.
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