Abstract

Temperature dependence of the Brillouin shift in a commercially available dispersion-shifted fiber has been experimentally investigated in the range of 20 to 820~ °C . When the as-fabricated fiber underwent a temperature cycle in the entire temperature rage, the Brillouin shift exhibited a noticeable hysteresis having the maximum frequency discrepancy of 48 MHz or larger between heating and cooling processes. After the fiber was annealed for 9 h at 850~ °C , however, the hysteresis almost disappeared and, among repeated temperature cycles in the ranges of 20-820~ °C and of 500-800~ °C , the maximum frequency discrepancy was reduced to ±12.5 MHz or less. It is thus demonstrated that a suitably annealed fiber is reliable for the Brillouin shift-based distributed sensing over the wide temperature range.

© 2003 IEEE

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J. Lightwave Technol.

X. Bao, J. Dhliwayo, N. Heron, D. J. Webb and D. A. Jackson, "Experimental and theoretical studies on a distributed temperature sensor based on Brillouin scattering", J. Lightwave Technol., vol. 13, pp. 1340-1348, July 1995.

Y. Mohanna, J.-M. Saugrain, J.-C. Rousseau and P. Ledoux, "Relaxation of internal stresses in optical fibers", J. Lightwave Technol., vol. 8, pp. 1799-1802, Dec. 1990.

Other

T. R. Parker, M. Farhadiroushan, V. A. Handerek and A. J. Rogers, "Temperature and strain dependence of the power level and frequency of spontaneous Brillouin scattering in optical fibers", Opt. Lett., vol. 22, no. 11, pp. 787-789, 1997.

J. A. Bucaro and H. D. Dardy, "High-temperature Brillouin scattering in fused quartz", J. Appl. Phys., vol. 45, no. 12, pp. 5324-5329, 1974 .

J. Pelous and R. Vacher, "Thermal Brillouin scattering in crystalline and fused quartz from 20 to 1000~ °C ", Solid State Commun., vol. 18, no. 5, pp. 657-661, 1976.

R. Bruckner, "Properties and structure of vitreous silica. I", J. Non-Cryst. Solids, vol. 5, pp. 123-175, 1970.

S. M. Maughan, H. H. Kee and T. P. Newson, "57-km single-ended spontaneous Brillouin-based distributed fiber temperature sensor using microwave coherent detection", Opt. Lett., vol. 26, no. 6, pp. 331-333, 2001.

H. H. Kee, G. P. Lees and T. P. Newson, "Technique for measuring distributed temperature with 35-cm spatial resolution utilizing the Landau-Placzek ratio", IEEE Photon. Technol. Lett., vol. 12, pp. 873-875, July 2000.

Y. Li, F. Zhang and T. Yoshino, "Wide temperature range Brillouin and Rayleigh optical-time-domain reflectometry in a dispersion-shifted fiber", Appl. Opt. , vol. 42, no. 19, pp. 3772-3775,

D. Culverhouse, F. Farahi, C. N. Pannell and D. A. Jackson, "Potential of stimulated Brillouin scattering as sensing mechanism for distributed temperature sensors", Electron. Lett., vol. 25, pp. 913-915, July 1989.

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