Measurement of temperature and strain distribution by Brillouin frequency shift in silica optical fibers

Tsuneo Horiguchi; Toshio Kurashima; Yahei Koyamada

doi:10.1117/12.141280

5 March 1993 Measurement of temperature and strain distribution by Brillouin frequency shift in silica optical fibers

Tsuneo Horiguchi, Toshio Kurashima, Yahei Koyamada

Proceedings Volume 1797, Distributed and Multiplexed Fiber Optic Sensors II; (1993) https://doi.org/10.1117/12.141280
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

This paper describes the principles and recent development of a new technique for measuring temperature and strain distribution using Brillouin backscattering rather than Rayleigh and Raman backscattering. The technique is based on temperature- and strain-induced changes in the Brillouin frequency shift. Experimental sensitivities of 1.2 MHz/K and 5.8 MHz/10^-4 strain are demonstrated at a wavelength of 1.32 micrometers . Two approaches for measuring the weak Brillouin line are discussed.

Citation Download Citation

Tsuneo Horiguchi, Toshio Kurashima, and Yahei Koyamada "Measurement of temperature and strain distribution by Brillouin frequency shift in silica optical fibers", Proc. SPIE 1797, Distributed and Multiplexed Fiber Optic Sensors II, (5 March 1993); https://doi.org/10.1117/12.141280

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