Asymmetric acoustic propagation of wave packets via the self-demodulation effect
Classical Physics
2015-12-09 v1
Abstract
This article presents the experimental characterization of nonreciprocal elastic wave transmission in a single-mode elastic waveguide. This asymmetric system is obtained by coupling a selection layer with a conversion layer: the selection component is provided by a phononic crystal, while the conversion is achieved by a nonlinear self-demodulation effect in a 3D unconsolidated granular medium. A quantitative experimental study of this acoustic rectifier indicates a high rectifying ratio, up to , with wide band (10 kHz) and an audible effect. Moreover, this system allows for wave-packet rectification and extends the future applications of asymmetric systems.
Keywords
Cite
@article{arxiv.1510.06633,
title = {Asymmetric acoustic propagation of wave packets via the self-demodulation effect},
author = {Thibaut Devaux and Vincent Tournat and Olivier Richoux and Vincent Pagneux},
journal= {arXiv preprint arXiv:1510.06633},
year = {2015}
}