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
Integrated and Robust Fabry–Perot Humidity Sensor Based on Metal–Organic Framework onto Fiber-Optic Facet
Shuaicheng Liu,Xuanming Zhang,Qiying Wang,Shengchao Chen,Fei Wang,Jun Wang,Guanjun Wang,Wei-Ta Yang,Mengxing Huang +8 more
TL;DR: An integrated and robust fiber-optic Fabry-Perot (FP) humidity sensor based on the metal-organic framework (MOF) material FIR-53 is presented and characterized for the first time, along with its implementation method as mentioned in this paper .
Proceedings ArticleDOI
Simple refractometer based on in-line fiber interferometers
TL;DR: In this article, a simple but accurate optical fiber refractometer based on the Fresnel reflection in the fiber tip and two in-line low-reflective mirrors for light intensity referencing is reported.
Journal ArticleDOI
PVDF Membrane-Based Dual-Channel Acoustic Sensor Integrating the Fabry–Pérot and Piezoelectric Effects
TL;DR: In this paper , a resonant acoustic wave detector combined with Fabry-Pérot interference (FPI) and piezoelectric (PE) effects based on a polyvinylidene fluoride (PVDF)-pierced polysilicon (PES) piezolectric film was proposed to enhance the ability of the sensor to detect acoustic signals in a specific frequency band.
DissertationDOI
Novel applications of distributed fiber optic sensors for pipeline structural health monitoring
TL;DR: In this paper, a distributed fiber optic sensor was used to detect the onset of out-of-roundness in pipes and monitor local stiffness changes on the outofround pipe.
References
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