Features of periodical acoustic impedance structure and acoustic wave interaction in novel controllable SAW device

The SAW device with the electroinduced controllable structure was investigated theoretically and experimentally. The innovative SAW device on a LiTaO$_3$ single crystal with the volume existed and controllable domain structure was proposed. The parameters of the electroinduced structure as well as the acoustic wave interaction have ability to control. The theoretical and experimental results of the acoustic wave interaction in the ferroelectric waveguide with the electroinduced periodical structures were discussed.