The calculation of the efficiency of planar acoustooptic light deflectors based on PE:LiNbO/sub 3/ waveguides is presented. Both the collinear and the noncollinear interaction geometries on Y-cut LiNbO/sub 3/ are evaluated. By use of recently determined elastic stiffness constants of PE:LiNbO/sub 3/, the acoustic and electric field distributions of the propagating Rayleigh waves are calculated rigorously. Coupling between the optical modes is treated by a coupled mode approach. The dependence of the coupling strength on the acoustic frequency, mode type, and waveguide parameter is given.
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机译：提出了基于PE：LiNbO / sub 3 /波导的平面声光偏转器的效率计算。评估了Y形LiNbO / sub 3 /上的共线和非共线相互作用几何形状。通过使用最近确定的PE：LiNbO / sub 3 /的弹性刚度常数，可以精确地计算传播的瑞利波的声和电场分布。光学模式之间的耦合通过耦合模式方法来处理。给出了耦合强度对声频，模式类型和波导参数的依赖性。
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