Validation of TW-COTDR method for 25km distributed optical fiber sensing

Sylvie Delepine-Lesoille; Artur Guzik; Johan Bertrand; Jean-Marie Henault; Kinzo Kishida

doi:10.1117/12.2025802

20 May 2013 Validation of TW-COTDR method for 25km distributed optical fiber sensing

Sylvie Delepine-Lesoille, Artur Guzik, Johan Bertrand, Jean-Marie Henault, Kinzo Kishida

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 879438 (2013) https://doi.org/10.1117/12.2025802
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

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.

Citation Download Citation

Sylvie Delepine-Lesoille, Artur Guzik, Johan Bertrand, Jean-Marie Henault, and Kinzo Kishida "Validation of TW-COTDR method for 25km distributed optical fiber sensing", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879438 (20 May 2013); https://doi.org/10.1117/12.2025802

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