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
Health-Monitoring Systems for Marine Structures: A Review
TL;DR: A comprehensive review of the state-of-the-art developments in health monitoring of marine structures is presented in this paper , where the authors identify the different methodologies related to the treatment of data collected by the sensors.
Patent
Fiber optic bolometer
Ming Han,Matthew Reinke +1 more
TL;DR: In this article, the authors present a fiber optic bolometer device that includes a reflective dielectric film disposed over the first surface of the silicon layer, and an absorptive coating disposed on the second surface of silicon layer (e.g., the surface distal to the end face of the optical fiber).
Journal ArticleDOI
Fiber-Optic Hydrophone Based on Michelson’s Interferometer with Active Stabilization for Liquid Volume Measurement
TL;DR: In this paper , the authors presented an FOH system composed of two optical fiber coils made with commercial single mode fiber (SMF) working in the sensor head of a Michelson's interferometer (MI) supported by an active stabilization mechanism that drives another optical coil wound around a piezoelectric actuator (PZT) in the reference arm to mitigate external mechanical and thermal noise from the environment.
Book ChapterDOI
Principles of Optical Fiber Sensing
TL;DR: This chapter provides an introduction to the topic of optical fiber sensing, starting with defining optical fibers in general, giving guide to how to use them in the field of communications, then moving towards theField of optical Fiber sensing.
Journal ArticleDOI
Magnet-assisted hybrid EFPI/FBG sensor for internal corrosion monitoring of steel pipelines
TL;DR: In this article , a highly sensitive, magnet-assisted hybrid sensor of fiber Bragg grating (FBG) and extrinsic Fabry-Perot interferometer (EFPI) is proposed, and designed for simultaneous measurement of temperature and pipeline thickness loss.
References
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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
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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
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