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Opt Lett. 2005 Jun 1;30(11):1276-8.

Simultaneous temperature and strain measurement with combined spontaneous Raman and Brillouin scattering.

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  • 1Optoelectronics Research Centre, University of Southampton, Southampton So17 1BJ, UK. mna@orc.soton.ac.uk


We report on a novel method for simultaneous distributed measurement of temperature and strain based on spatially resolving both spontaneous Raman and Brillouin backscattered anti-Stokes signals. The magnitude of the intensity of the anti-Stokes Raman signal permits the determination of the temperature. The Brillouin frequency shift is dependent on both the temperature and the strain of the fiber; once the temperature has been determined from the Raman signal, the strain can then be computed from the frequency measurement of the Brillouin signal.

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