M. Planat, G. Vanderborck, H. Gautier, C. Maerfeld
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A Finite Element Analysis of the Piezoelectric Waveguide Convolver
Absfmct-A variational finite element analyijs of linear and low nonlinear guided wave propagation in piezoelectric media is proposed here. The method is applied to thin metallic AI &ides on Ez LiNb03! such as employed in waveguide convolvers. First dispersion c‘urves and tield amplitude profiles for linear analysis are obtained. Then the method is applied to account for the nonlinear mixing mechanisps and to compute the,ponvolution 6gure of merit. The hear field distribution at w is used to compute the driving forces at 2w, and the forced problem is solved at 2w.
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