High-performance hybrid Raman/fiber Bragg grating fiber-optic sensor based on simplex cyclic pulse coding

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 r...

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Bibliographic Details
Published in:	Optics letters Vol. 38; no. 4; p. 471
Main Authors:	Taki, M, Zaidi, F, Toccafondo, I, Nannipieri, T, Signorini, A, Faralli, S, Di Pasquale, F
Format:	Journal Article
Language:	English
Published:	United States 15.02.2013
ISSN:	1539-4794, 1539-4794
Online Access:	Get more information
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1539-4794 1539-4794
DOI:	10.1364/OL.38.000471