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
A White-Light Interferometry for the Measurement of High-Finesse Fiber Optic EFPI Sensors
TL;DR: In this paper, a white-light interferometry based on the Fourier transform method is proposed to measure the optical path difference (OPD) of the high-finesse fiber optic extrinsic Fabry-Perot interferometric (EFPI) sensor.
Journal ArticleDOI
Temperature measurement using a multi-wavelength fiber ring laser based on a hybrid gain medium and Sagnac interferometer
TL;DR: A multi-wavelength fiber ring laser (MWFRL) based on a hybrid gain medium and Sagnac interferometer (SI) used for temperature measurement has been proposed and experimentally demonstrated and shows a good linear response and temperature sensitivity.
Journal ArticleDOI
High-sensitivity sucrose erbium-doped fiber ring laser sensor
TL;DR: In this article, the authors investigated a high-sensitivity sucrose sensor based on a standard erbium-doped fiber ring laser incorporating a coreless fiber (CF).
Journal ArticleDOI
Dual-Point Refractive Index Measurements Using Coupled Seven-Core Fibers
Natanael Cuando-Espitia,Miguel A. Fuentes-Fuentes,Daniel A. May-Arrioja,Ivan Hernandez-Romano,Rodolfo Martinez-Manuel,Miguel Torres-Cisneros +5 more
TL;DR: In this article, the authors proposed an experimental setup to measure the refractive index (RI) of two independent liquid samples by analyzing a single optical signal, where they spliced a section of a seven-core fiber (SCF) into each arm of a 1 × 2 fiber coupler and spliced additional single mode fiber (SMF) to use as fiber probe tips.
Journal ArticleDOI
Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators
TL;DR: In this paper, the authors reported the demonstration of ultra-high strain resolutions using only off-the-shelf commercial components, leveraging the high wavelength discrimination of long, high-finesse fiber Fabry-Perot interferometers (FFPI), using two 1 m-long FFPIs as the sensor and the other as a frequency reference.
References
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