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Simultaneous measurement of temperature and strain distribution by optical time-domain analysis of Brillouin dynamic grating

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3 Author(s)
Kwang Yong Song ; Dept. of Phys., Chung-Ang Univ., Seoul, South Korea ; Jae Hak Kim ; Hyuk Jin Yoon

Discriminative measurements of strain and temperature distribution are demonstrated based on optical time-domain analysis of Brillouin dynamic grating (BDG) in a polarization-maintaining fiber. The local information of the Brillouin frequency and the BDG frequency are acquired with a 1.2 m spatial resolution, and analyzed together to provide the distribution map of temperature and strain variation with the accuracies of ±1 K and ±20 μs, respectively.

Published in:

OptoElectronics and Communications Conference (OECC), 2010 15th

Date of Conference:

5-9 July 2010