Optical fiber characterization for optimization of a Brillouin-scattering-based fiber optic sensor

Kellie A. Brown; Anthony W. Brown; Bruce G. Colpitts

doi:10.1117/12.567086

16 November 2004 Optical fiber characterization for optimization of a Brillouin-scattering-based fiber optic sensor

Kellie A. Brown, Anthony W. Brown, Bruce G. Colpitts

Proceedings Volume 5579, Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers; (2004) https://doi.org/10.1117/12.567086
Event: Photonics North, 2004, Ottawa, Ontario, Canada

Abstract

Brillouin scattering-based distributed fiber optic sensors have been shown to be effective diagnostic tools for monitoring structural health, and detecting fires and hot spots, among other uses. Current research has mainly been focused on improving the spatial, strain and temperature resolutions, and sensing lengths of these systems, generally by the use of better signal processing and improved equipment. In contrast, there has been little published work on optimizing the sensing optical fiber itself. A number of commercially available optical fibers have been measured in order to determine how to optimize their Brillouin characteristics. Some characteristics chosen are the number of Brillouin peaks, the frequency of the peaks, their linewidth, and the temperature and strain coefficients of each peak. It is shown that lowering the intrinsic Brillouin frequency of the fiber can increase the Brillouin strain coefficient and decrease the temperature coefficient of the optical fiber for the main Brillouin peak, among other results.

Citation Download Citation

Kellie A. Brown, Anthony W. Brown, and Bruce G. Colpitts "Optical fiber characterization for optimization of a Brillouin-scattering-based fiber optic sensor", Proc. SPIE 5579, Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers, (16 November 2004); https://doi.org/10.1117/12.567086

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