Journal ArticleDOI
Multiplexed Mach-Zehnder and Fizeau tandem white light interferometric fiber optic strain/temperature sensing system
Libo Yuan,Jun Yang +1 more
TLDR
In this article, a multiplexed Mach-Zehnder and Fizeau tandem white light interferometric fiber optic sensing system permitting absolute length measurement in remote reflective sensor arrays is proposed.Abstract:
A novel multiplexed Mach–Zehnder and Fizeau tandem white light interferometric fiber optic sensing system permitting absolute length measurement in remote reflective sensor arrays is proposed. The sensor reflective signals characteristics have been analyzed and the relationship between light signals power and sensors total number was given for multiplexing potential evaluation. Experimentally, a three sensor array has been demonstrated.read more
Citations
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Journal ArticleDOI
A novel Michelson Fabry-Perot hybrid interference sensor based on the micro-structured fiber
Yaxun Zhang,Zhang Yu,Zhang Yu,Zhenzhen Wang,Liu Zhihai,Liu Zhihai,Yong Wei,Enming Zhao,Xinghua Yang,Jianzhong Zhang,Jun Yang,Libo Yuan +11 more
TL;DR: In this paper, the Michelson Fabry-Perot hybrid interference sensor was proposed to measure axial strain and radial bending simultaneously by integrating a Michelson interferometer in a two-core fiber and a fabry-perot interferer in a micro silica-capillary.
Journal ArticleDOI
Phase Noise Cancelled OFDR With cm-Level Spatial Resolution Using Phase Diversity
TL;DR: In this paper, a new method was proposed to cancel phase noise in the OFDR, which can detect short-distance and long-distance breakpoints with high spatial resolution, provided the phase noise of optical source is cancelled.
Coherence Multiplexing of Fiber-Optic Interferometric Sensors
TL;DR: In this paper, a method of multiplexing several optical signals onto a single spatial channel (e.g., a singlemode fiber) using a short coherence length continuous wave light source is described.
Journal ArticleDOI
Distributed strain measurement using modal interference in a birefringent optical fiber
TL;DR: In this paper, a frequency-modulated optical signal from a laser diode was launched in a birefringent fiber whose "V" number was set in the range 2.405-3.831.
Journal ArticleDOI
Range extension of the optical delay line in white light interferometry.
Yonggui Yuan,Dongchuan Lu,Jun Yang,Jianguo Wang,Hanyang Li,Zhangjun Yu,Haoliang Zhang,Feng Peng,Zhihai Liu,Libo Yuan +9 more
TL;DR: The proposed range-extension method maintains the original performances of the stage just through the process of orderly copying and jointing and enables the structure to be extended without limitation, which is particularly significant for practical applications.
References
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Journal ArticleDOI
Fiber optics strain gauge.
C D Butter,G. B. Hocker +1 more
TL;DR: A fiber optics strain gauge measuring strains of <0.4 × 10.2 × 10 m 1 is demonstrated, utilizing the change in optical pathlength caused by strain in a fiber.
Journal ArticleDOI
Coherence multiplexing of fiber-optic interferometric sensors
Janet L. Brooks,Robert H Wentworth,Robert C. Youngquist,Moshe Tur,Byoung Yoon Kim,Herbert J. Shaw +5 more
TL;DR: In this paper, a method of multiplexing several optical signals onto a single spatial channel using a short coherence length continuous wave light source is described, and some design considerations are discussed Experimental results for a single sensor and receiver are presented and compared with theoretical predictions.
Journal ArticleDOI
Fiber-optic Fabry-Perot temperature sensor using a low-coherence light source
C.E. Lee,Henry F. Taylor +1 more
TL;DR: In this paper, an interferometric fiber-optic sensor using a light-emitting diode (LED) as the optical source is analyzed and demonstrated using two Fabry-Perot interferometers (FPIs) in series, one for sensing and one which serves as a reference.
Journal ArticleDOI
Low-coherence deformation sensors for the monitoring of civil-engineering structures
TL;DR: In this article, an optical fiber deformation sensor with a resolution of 10 μm and an operational range of 60 mm has been realized for the monitoring of large structures over several months without noticeable drift.
Journal ArticleDOI
Remote displacement measurement using a passive interferometer with a fiber-optic link.
TL;DR: Remote displacement measurement is demonstrated using a Fabry-Perot cavity with a multimode optical fiber link and advantages include compatibility with multimode fiber-optic components, high immunity to optical losses, and large dynamic range.