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Employing wavelength diversity technique to enhance the Brillouin gain response in BOTDA system

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In this paper, we propose a novel wavelength diversity technique in Brillouin optical time domain analysis (BOTDA) system to improve the Brillouin gain response and increase sensing range. This technique greatly maximizes the launching pump power, without activating the nonlinear effects that limit the conventional BOTDA sensing range. The strain and temperature effects on Brillouin frequency shift have been characterized in the proposed technique with an extended sensing range up to 100 km and 1 meter spatial resolution.

© 2016 Optical Society of America

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