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High-performance hybrid Raman/fiber Bragg grating fiber-optic sensor based on simplex cyclic pulse coding |
Optics Letters, Vol. 38, Issue 4, pp. 471-473 (2013)
http://dx.doi.org/10.1364/OL.38.000471
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Abstract
We propose and experimentally demonstrate the use of cyclic pulse coding to improve the performance of hybrid Raman/fiber Bragg grating (FBG) fiber-optic sensors, for simultaneous measurement of distributed static temperature and discrete dynamic strain over the same sensing fiber. Effective noise reduction is achieved in both Raman optical time-domain reflectometry and dynamic interrogation of time-division-multiplexed fiber FBG sensors, enhancing the sensing range resolution and providing real-time point dynamic strain measurement capabilities. The highly integrated sensor scheme employs broadband apodized low-reflectivity FBGs, a single narrowband optical source, and a shared receiver block.
© 2013 Optical Society of America
OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.1480) Optical devices : Bragg reflectors
(290.5860) Scattering : Scattering, Raman
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(280.1350) Remote sensing and sensors : Backscattering
ToC Category:
Diffraction and Gratings
History
Original Manuscript: November 13, 2012
Revised Manuscript: December 21, 2012
Manuscript Accepted: January 10, 2013
Published: February 8, 2013
Citation
M. Taki, F. Zaidi, I. Toccafondo, T. Nannipieri, A. Signorini, S. Faralli, and F. Di Pasquale, "High-performance hybrid Raman/fiber Bragg grating fiber-optic sensor based on simplex cyclic pulse coding," Opt. Lett. 38, 471-473 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-4-471
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