Nonlinear holography for acoustic wave detection

机译：用于声波检测的非线性全息术

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摘要

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.

机译：液晶介质用于执行非线性动态全息术，并与用于光学传感应用的多模光纤耦合。由于非线性全能的自适应特性，以及多模纤维的灵敏度，我们证明了即使用噪声信号也能够执行有效的声波检测。估计检测极限并比较多模与单数光纤。最后，为声干扰的空间定位实现了波长复用协议。

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《Slow Light, Fast Light, and Opto-Atomic Precision Metrology》|2015年||共9页
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U. Bortolozzo; D. Dolfi; J.P. Huignard; S. Molin; A. Peigne; S. Residori;
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中图分类光学;
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Adaptive holography; optical sensing; liquid crystals; optical fibers; acoustic wave detection;

机译：自适应全息术;光学传感;液晶;光纤;声波检测;

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4. Nonlinear holography for acoustic wave detection [C] . U. Bortolozzo, D. Dolfi, J.P. Huignard, Slow light, fast light, and opto-atomic precision metrology VIII . 2015

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8. Detection of Sound Radiation from Plates Using Long Wavelength Acoustical Holography [R] . Watson, E. E. 1971

机译：利用长波长声全息技术检测平板声辐射

Nonlinear holography for acoustic wave detection

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