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Proceedings Paper

Validation of TW-COTDR method for 25km distributed optical fiber sensing
Author(s): Sylvie Delepine-Lesoille; Artur Guzik; Johan Bertrand; Jean-Marie Henault; Kinzo Kishida
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Paper Abstract

The paper reports results of the long distance (25 km range) distributed optical fiber sensing by means of Tunable Wavelength Coherent Optical Time Domain Reflectometry (TW-COTDR) method. The tests were designed to verify the accuracy and repeatability of the method in long distance measurements, as well as compatibility with various optical fiber types. Results demonstrate the capability of the method to detect strain or temperature changes over long distances. This proposed method is compared to Brillouin sensing techniques, into the same fibers. Unlike the Brillouin-based methods, measurement uncertainty does not increase with increasing distance. We demonstrated 0.16°C uncertainty at 21km.

Paper Details

Date Published: 20 May 2013
PDF: 4 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879438 (20 May 2013); doi: 10.1117/12.2025802
Show Author Affiliations
Sylvie Delepine-Lesoille, ANDRA (France)
Artur Guzik, Neubrex Co., Ltd. (Japan)
Johan Bertrand, ANDRA (France)
Jean-Marie Henault, Electricité de France (France)
Kinzo Kishida, Neubrex Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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