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
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Journal ArticleDOI
Measurement of Structural Loads Using a Novel MEMS Extrinsic Fabry–Perot Strain Sensor
TL;DR: In this paper, the authors used microelectromechanical systems (MEMS) technology to fabricate a novel extrinsic fiber Fabry-Perot (EFFP) strain sensor; this fiber sensor is applied to measure load with higher precision for a small structure.
Journal ArticleDOI
Rotary photon drag in a Mach-Zehnder-type Sagnac interferometer
TL;DR: In this article, rotary photon drag in a Mach-Zehnder type Sagnac interferometer using a four level N-type atomic medium was theoretically investigated, where splitting of a single pulse of light into two pulses was observed at high strength of the control field both in absorption and dispersion spectra.
Journal ArticleDOI
Enhanced Mach-Zehnder interferometer multimode–single-mode–multimode fiber optic refractive index sensor based on surface plasmon resonance
TL;DR: In this paper , an all-fiber Mach-Zehnder interferometer (MZI) sensor for refractive index (RI) measuring is presented, which is based on Multimode-Single-mode-Multimode (MSM) fiber.
Journal ArticleDOI
Optical Fibers on Medical Instrumentation: A Review
João Paulo Carmo,João Ribeiro +1 more
TL;DR: In this paper, a wide variety of optical fiber sensors are available and can be divided into three categories: the external or extrinsic ones where the fiber simply drives the measured information to and from the transducer at a distant location, the intrinsic category (Boerkamp et al., 2007) where the optical properties are sensitive to a given external stimulus, and the hybrid category where the light is transferred over the optical fiber for conversion into electricity on a distant optical receiver.
Journal ArticleDOI
Modal interferometer based on a single mechanically induced long-period fiber grating and a nanoparticles-coated film section
Karla M. Salas-Alcántara,Laura Aparicio-Ixta,Ismael Torres-Gómez,Mario Rodríguez,Gabriel Ramos-Ortiz,Rafael Espinosa-Luna,J. L. Pichardo-Molina +6 more
TL;DR: The novel modal interferometer architecture based on a single MI-LPFG, combined with a functionalized nanoparticles coating film, offers an attractive platform for the development of fiber sensors and other fiber-based devices.
References
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Journal ArticleDOI
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