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Frequency-domain Analysis of Dynamically Applied Strain Using Sweep-Free Brillouin Time-domain Analyzer

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Fast reconstruction of the whole Brillouin gain spectrum is experimentally demonstrated using sweep-free Brillouin optical time-domain analysis (SF-BOTDA). Strain variations with frequencies up to 400Hz are spectrally analyzed achieving strain sensitivity of 1microstrain per root Hz at a sampling rate of 5.5KHz and a spatial resolution of 4m.

© 2012 Optical Society of America

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