Simultaneous long- and short-gauge strain measurement in spectral domain by a novel optical fiber sensor unit

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Abstract
A novel fiber-optic sensor unit by combining fiber-optic white-light interferometry and fiber Bragg gratings is proposed for simultaneous long- and short-gauge strain measurements. A new demodulation scheme based on spectral coherence theory for fiber-optic white-light interferometric sensors is proposed. This makes it possible that two quite different types of sensors in one unit can be simultaneously demodulated in the spectral domain. An experimental sensor unit has been built and tested. The results demonstrated that the spectral demodulation of the sensor unit is readily realized and that the sensor scheme is feasible.
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Author(s)
Zhang, Jianzhong
Peng, Gang-Ding
yuan, l
Sun, W
Jin, W
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Publication Year
2007
Resource Type
Journal Article
Degree Type
UNSW Faculty
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download 2007-PTL-1084-Zhang.pdf 244.83 KB Adobe Portable Document Format
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