Shames P E, Sun P C, Fainman Y
Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0407, USA.
Appl Opt. 1998 Jun 10;37(17):3726-34. doi: 10.1364/ao.37.003726.
We describe a simple method for performing accurate computer simulation and modeling of arbitrary-geometry electro-optic (EO) devices. We use a material EO model that includes the effects of scattering and depolarization as well as the change in the index of refraction. Finite-element analysis is used to determine the electrostatic field distribution for EO device designs. Attenuation of the transmitted light intensity as a result of scattering is modeled as an exponential function, and the intensity of transmitted depolarized light is shown to be a function of the scattering intensity. The total optical transmittance is determined by integration of these values over all the elements in the path of the propagating light. Lanthanum-modified lead zirconate titanate-based surface-electrode and transverse-electrode EO devices are designed and fabricated. Their experimentally measured performance is found to be in excellent agreement with our computer-simulation results.
我们描述了一种用于对任意几何形状的电光（EO）器件进行精确计算机模拟和建模的简单方法。我们使用一种材料电光模型，该模型包括散射和去极化效应以及折射率的变化。有限元分析用于确定电光器件设计的静电场分布。由于散射导致的透射光强度衰减被建模为指数函数，并且透射去极化光的强度被证明是散射强度的函数。总光学透过率通过在传播光路径上的所有元件上对这些值进行积分来确定。设计并制造了基于镧改性锆钛酸铅的表面电极和横向电极电光器件。发现它们的实验测量性能与我们的计算机模拟结果非常吻合。
