22km distributed strain sensor using Brillouin loss in an optical fibre

Abstract

A novel distributed strain sensor is presented utilizing the strain dependence of the frequency at which the Brillouin loss is maximized in the interaction between a cw laser and a pulsed laser. A strain resolution of 20 µ with a spatial resolution of 5 m has been achieved with a 22 km sensing length.

Uncontrolled Keywords: distributed strain sensor, strain dependence, frequency, Brillouin loss
Published Date: 1994-01-01
Authors: Bao, X.
Webb, David J.
Jackson, David A.

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