Combined distributed temperature and strain sensor based on Brillouin loss in an optical fiber
- 15 January 1994
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 19 (2), 141-143
- https://doi.org/10.1364/ol.19.000141
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.Keywords
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