Abstract

We present a novel distributed sensor that utilizes the temperature and strain dependence of the frequency at which the Brillouin loss is maximized in the interaction between a cw laser and a pulsed laser. With a 22-km sensing length, a strain resolution of 20 μ∊ and a temperature resolution of 2 °C have been achieved with a spatial resolution of 5 m.

© 1994 Optical Society of America

32-km distributed temperature sensor based on Brillouin loss in an optical fiber

X. Bao, D. J. Webb, and D. A. Jackson
Opt. Lett. 18(18) 1561-1563 (1993)

22-km distributed temperature sensor using Brillouin gain in an optical fiber

X. Bao, D. J. Webb, and D. A. Jackson
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All-fiber system for simultaneous interrogation of distributed strain and temperature sensing by spontaneous Brillouin scattering

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Distributed dynamic large strain optical fiber sensor based on the detection of spontaneous Brillouin scattering

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57-km single-ended spontaneous Brillouin-based distributed fiber temperature sensor using microwave coherent detection

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