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Integrated hybrid Raman/fiber Bragg grating interrogation scheme for distributed temperature and point dynamic strain measurements |
Applied Optics, Vol. 51, Issue 30, pp. 7268-7275 (2012)
http://dx.doi.org/10.1364/AO.51.007268
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Abstract
We propose and experimentally demonstrate the feasibility of an integrated hybrid
optical fiber sensing interrogation technique that efficiently combines
distributed Raman-based temperature sensing with fiber Bragg grating (FBG)-based
dynamic strain measurements. The proposed sensing system is highly integrated,
making use of a common optical source/receiver block and exploiting the
advantages of both (distributed and point) sensing technologies simultaneously.
A multimode fiber is used for distributed temperature
sensing, and a pair of FBGs in each discrete sensing point, partially overlapped
in the spectral domain, allows for temperature-independent discrete strain
measurements. Experimental results report
a dynamic strain resolution of
© 2012 Optical Society of America
OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(190.5650) Nonlinear optics : Raman effect
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(280.4788) Remote sensing and sensors : Optical sensing and sensors
ToC Category:
Nonlinear Optics
History
Original Manuscript: July 13, 2012
Revised Manuscript: September 6, 2012
Manuscript Accepted: September 13, 2012
Published: October 16, 2012
Citation
Farhan Zaidi, Tiziano Nannipieri, Marcelo A. Soto, Alessandro Signorini, Gabriele Bolognini, and Fabrizio Di Pasquale, "Integrated hybrid Raman/fiber Bragg grating interrogation scheme for distributed temperature and point dynamic strain measurements," Appl. Opt. 51, 7268-7275 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-30-7268
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