Abstract
Brillouin-scattering-based sensors are capable of measuring either the strain or the temperature along the length of an optical fiber in a distributed fashion through measurement of the Brillouin-frequency shift. The cross sensitivity of the frequency shift to these two parameters makes it impossible to differentiate between them by measurement of the frequency shift alone. We report on a new technique that permits the simultaneous measurement of strain and temperature to resolutions of ±178 µε and ±3.9 °C at a spatial resolution of 3.5 m by incorporation of the Brillouin-loss peak power with the conventional Brillouin-frequency measurement.
© 1999 Optical Society of America
Full Article | PDF ArticleMore Like This
Oliver Hadeler, Erland Rønnekleiv, Morten Ibsen, and Richard I. Laming
Appl. Opt. 38(10) 1953-1958 (1999)
Xiaoyi Bao, Qinrong Yu, and Liang Chen
Opt. Lett. 29(12) 1342-1344 (2004)
M. N. Alahbabi, Y. T. Cho, and T. P. Newson
Opt. Lett. 30(11) 1276-1278 (2005)