Abstract

We propose the principle of a high-dynamic, quasi-distributed temperature sensor based on the behavior of the 1.13- and the 1.24-μm emission lines in erbium-doped silica fibers. The ratio of fluorescent intensity of these lines presents a temperature dynamic of more than 11 dB between room temperature and 600 °C. As the lower level of these transitions is not the fundamental, the emission lines are absorption free, and no dependence of the intensity ratio of the two lines has been observed, with power and wavelength pump variations permitting the realization of self-calibrated quasi-distributed sensors.

© 1995 Optical Society of America

Erbium-doped silica fibers for intrinsic fiber-optic temperature sensors

E. Maurice, G. Monnom, B. Dussardier, A. Saïssy, D. B. Ostrowsky, and G. W. Baxter
Appl. Opt. 34(34) 8019-8025 (1995)

Self-referenced point temperature sensor based on a fluorescence intensity ratio in Yb³⁺-doped silica fiber

Eric Maurice, Scott A. Wade, Stephen F. Collins, Gérard Monnom, and Greg W. Baxter
Appl. Opt. 36(31) 8264-8269 (1997)

Erbium-doped optical fiber fluorescence temperature sensor with enhanced sensitivity, a high signal-to-noise ratio, and a power ratio in the 520–530- and 550–560-nm bands

Gonzalo Paez and Marija Strojnik
Appl. Opt. 42(16) 3251-3258 (2003)

Strain-independent temperature measurement by use of a fluorescence intensity ratio technique in optical fiber

Scott A. Wade, Stephen F. Collins, Kenneth T. V. Grattan, and Gregory W. Baxter
Appl. Opt. 39(18) 3050-3052 (2000)

High-resolution distributed temperature sensing with the multiphoton-timing technique

M. Höbel, J. Ricka, M. Wüthrich, and Th. Binkert
Appl. Opt. 34(16) 2955-2967 (1995)