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Proceedings Paper

Measurement range elongation based on a temporal gating scheme in Brillouin correlation domain distributed discrimination system for strain and temperature operated by a single laser
Author(s): Rodrigo Kendy Yamashita; Weiwen Zou; Zuyuan He; Kazuo Hotate
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Paper Abstract

We have demonstrated distributed discrimination of strain and temperature by localizing and scanning both the Stimulated Brillouin scattering (SBS) and the Brillouin dynamic grating (BDG) along a polarization maintaining fiber, with elongated measurement range. The localization and scanning is performed by a correlation domain technique, whose measurement range is restricted by the distance between consecutive correlation peaks. To overcome this restriction, we applied a temporal gating scheme to the system, enlarging the measurement range from ~8 m to ~500 m. Here, we report the results confirming the effectiveness of this scheme in a system operated by a single laser source and demonstrate strain-temperature discrimination when strain or temperature is applied to segments on the 500-m-long fiber under test.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77530A (17 May 2011); doi: 10.1117/12.885077
Show Author Affiliations
Rodrigo Kendy Yamashita, The Univ. of Tokyo (Japan)
Weiwen Zou, Shanghai Jiao Tong Univ. (China)
Zuyuan He, The Univ. of Tokyo (Japan)
Kazuo Hotate, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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