Fast Brillouin Optical Time Domain Analysis for dynamic sensing

A new technique for the fast implementation of Brillouin Optical Time Domain Analysis (BOTDA) is proposed and demonstrated, carrying the classical BOTDA method to the dynamic sensing domain. By using a digital signal generator which enables fast switching among 100 scanning frequencies, we demonstra...

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Bibliographic Details
Published in:Optics express 2012-04, Vol.20 (8), p.8584-8591
Main Authors: Peled, Yair, Motil, Avi, Tur, Moshe
Format: Article
Language:English
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Summary:A new technique for the fast implementation of Brillouin Optical Time Domain Analysis (BOTDA) is proposed and demonstrated, carrying the classical BOTDA method to the dynamic sensing domain. By using a digital signal generator which enables fast switching among 100 scanning frequencies, we demonstrate a truly distributed and dynamic measurement of a 100 m long fiber with a sampling rate of ~10 kHz, limited only by the fiber length and the frequency granularity. With 10 averages the standard deviation of the measured strain was ~5 µε.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.20.008584