Distributed-temperature sensing using stimulated Brillouin scattering in optical silica fibers

Opt Lett. 1990 Sep 15;15(18):1038-40. doi: 10.1364/ol.15.001038.

Abstract

Temperature distribution in silica single-mode optical fibers, from -30 to +60 degrees C, is successfully measured by using Brillouin optical-fiber time-domain analysis. A temperature measurement accuracy of 3 degrees C with a spatial resolution of 100 m is attained over a fiber length of 1.2 km.