10 March 2015 Nonlinear holography for acoustic wave detection
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A liquid crystal medium is used to perform nonlinear dynamic holography and is coupled with multimode optical fibers for optical sensing applications. Thanks to the adaptive character of the nonlinear holography, and to the sensitivity of the multimode fibers, we demonstrate that the system is able to perform efficient acoustic wave detection even with noisy signals. The detection limit is estimated and multimode versus monomode optical fiber are compared. Finally, a wavelength multiplexing protocol is implemented for the spatial localization of the acoustic disturbances.
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U. Bortolozzo, U. Bortolozzo, D. Dolfi, D. Dolfi, J.P. Huignard, J.P. Huignard, S. Molin, S. Molin, A. Peigné, A. Peigné, S. Residori, S. Residori, "Nonlinear holography for acoustic wave detection", Proc. SPIE 9378, Slow Light, Fast Light, and Opto-Atomic Precision Metrology VIII, 93781T (10 March 2015); doi: 10.1117/12.2086823; https://doi.org/10.1117/12.2086823


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