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Distributed sensor based on dark-pulse Brillouin scattering

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3 Author(s)
Brown, A.W. ; Dept. of Electr. & Comput. Eng., Univ. of New Brunswick, Fredericton, NB, Canada ; Colpitts, B.G. ; Brown, K.

A novel dark-pulse-based technique has been used for the first time in a Brillouin scattering-based distributed fiber sensor. Experimentally obtained Brillouin spectra demonstrate that the dark-pulse configuration is as capable of strain and temperature measurement as conventional pulse-based systems but at much higher spatial resolution. A spatial resolution of 50 mm is reported with a strain measurement accuracy of 6 μ/spl epsiv/ on a 100-m sensing fiber.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 7 )