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Proceedings Paper

Microwave photonic distributed sensing in harsh environment
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Paper Abstract

We report a new distributed fiber optic sensing technique using optical carrier based microwave interferometry. The concept has been demonstrated using different types of optical fibers including singlemode fiber, multimode fiber, single crystal sapphire fiber and polymer fiber. Using the microwave-photonic technique, many fiber interferometers with the same or different optical path differences were interrogated and their locations could be unambiguously determined. The distributed sensing capability was demonstrated using cascaded low-finesse Fabry-Perot interferometers fabricated by fs laser micromachining. Spatially continuous, fully distributed temperature and strain measurements were used as examples to demonstrate the capability of the proposed concept.

Paper Details

Date Published: 17 May 2016
PDF: 8 pages
Proc. SPIE 9836, Micro- and Nanotechnology Sensors, Systems, and Applications VIII, 98360H (17 May 2016); doi: 10.1117/12.2224745
Show Author Affiliations
Baokai Cheng, Clemson Univ. (United States)
Liwei Hua, Clemson Univ. (United States)
Wenge Zhu, Clemson Univ. (United States)
Yang Song, Clemson Univ. (United States)
Lei Yuan, Clemson Univ. (United States)
Yanjun Li, Clemson Univ. (United States)
Hai Xiao, Clemson Univ. (United States)


Published in SPIE Proceedings Vol. 9836:
Micro- and Nanotechnology Sensors, Systems, and Applications VIII
Thomas George; Achyut K. Dutta; M. Saif Islam, Editor(s)

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