Distributed sensor based on dark-pulse Brillouin scattering

Author

Brown, A.W. ; Colpitts, B.G. ; Brown, K.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of New Brunswick, Fredericton, NB, Canada

Volume

17

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

1501

Lastpage

1503

Abstract

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.

Keywords

distributed sensors; fibre optic sensors; high-speed optical techniques; stimulated Brillouin scattering; strain measurement; strain sensors; 100 m; Brillouin spectra; dark-pulse Brillouin scattering; distributed fiber sensor; spatial resolution; strain measurement; temperature measurement; Acoustic pulses; Acoustic waves; Brillouin scattering; Frequency; Optical pulses; Optical pumping; Optical scattering; Optical sensors; Spatial resolution; Strain measurement; Brillouin scattering; distributed sensor; fiber-optic sensor; spatial resolution; strain;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.848400

Filename

1453657