We propose the use of standard multiwavelength Fabry-Pérot (FP) lasers for distributed strain and temperature measurement in hybrid Raman- and Brillouin-based fiber-optic sensors. The multiple longitudinal modes of FP lasers allow for accurate spontaneous Raman scattering measurement and for simultaneous high-sensitivity coherent detection of the Brillouin frequency shift parameter for all longitudinal modes. Experimental results confirm great performance improvement in simultaneous strain and temperature measurement using a single optical fiber. © 2009 IEEE.
Fiber-optic distributed sensor based on hybrid raman and brillouin scattering employing multiwavelength Fabry-Pérot lasers
Bolognini Gabriele;
2009
Abstract
We propose the use of standard multiwavelength Fabry-Pérot (FP) lasers for distributed strain and temperature measurement in hybrid Raman- and Brillouin-based fiber-optic sensors. The multiple longitudinal modes of FP lasers allow for accurate spontaneous Raman scattering measurement and for simultaneous high-sensitivity coherent detection of the Brillouin frequency shift parameter for all longitudinal modes. Experimental results confirm great performance improvement in simultaneous strain and temperature measurement using a single optical fiber. © 2009 IEEE.File in questo prodotto:
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