Abstract

A frequency-modulated continuous-wave technique is used to detect the presence of frequency shifts in the Rayleigh-backscattered light in a single-mode optical fiber as a result of a changing temperature. The system is able to detect a rate of temperature change of 0.014 K/s, when a 20-cm length of fiber is heated. The system is also able to demonstrate a spatial resolution of better than 15 cm.

© 1994 Optical Society of America

Combined distributed temperature and strain sensor based on Brillouin loss in an optical fiber

X. Bao, D. J. Webb, and D. A. Jackson
Opt. Lett. 19(2) 141-143 (1994)

Interferometry with Rayleigh backscattering in a single-mode optical fiber

R. Juškaitis, A. M. Mamedov, V. T. Potapov, and S. V. Shatalin
Opt. Lett. 19(3) 225-227 (1994)

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)

Transmission-reflection analysis for localization of temporally successive multipoint perturbations in a distributed fiber-optic loss sensor based on Rayleigh backscattering

Vasilii V. Spirin
Appl. Opt. 42(7) 1175-1181 (2003)

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

Sally M. Maughan, Huai H. Kee, and Trevor P. Newson
Opt. Lett. 26(6) 331-333 (2001)