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Enhanced distributed hybrid sensor based on Brillouin and Raman scattering combining Fabry-Perot lasers and optical pulse coding

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Pulse coding techniques are proposed in combination with the use of Fabry-Perot lasers for simultaneous strain and temperature sensing based on hybrid spontaneous Raman-Brillouin scattering. Combination of both techniques allows for ~0.27K / ~30με resolution along 25-km sensing range.

© 2010 IEEE Communications Society, IEEE Photonics Society, OSA, Telcordia

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