Development of High-Level Software Package for Optical and Electromagnetic Wave Problems

随着计算机的广泛使用，对物理现象的数值模拟的需求迅速增加，本项目的目的是开发一个高级的光学和电磁波问题软件包。本文开发的软件包由前处理、求解和后处理三个程序包组成。该求解器单元已与用户友好的网格生成(前处理)和图形(后处理)包集成在一起，以便实际应用于实际问题。得到的结果如下：1.为了保持求解器的通用性，提出了一种基于有限元方法的数值方法。2.开发了预处理器，用于定义问题几何图形、输入节点、生成元素和指定材料属性-所有这些都是交互的。后处理器也被开发出来，以提供更好的物理图像。3.提出了一种分析光波导的改进的无杂散有限元方法。在EWS(Engineering Workstation)上开发了一个用于光波导分析的软件包。

As indicated by the wide-spread use of computers, demand for numerical simulation of physical phenomena has been rapidly increasing.The purpose of this project is to develop a high-level software package for optical and electromagnetic wave problems. The software package developed here consists of three packages tackling the preprocessing, solving, and post-processing in turn. The solver unit has been integrated with user-friendly mesh generation (pre-processing) and graphics (post-processing) packages for realistic application to practical problems. Results obtained are as follows:1. To preserve the generality of the solver, a numerical approach based on the finite-element method has been developed. 2. The preprocessor has been developed to define the problem geometry, enter nodes, generate elements, and specify material properties - all interactively. The post-processor has also been developed to give a better physical picture. 3. An improved finite-element method without spurious solutions has been developed for the analysis of optical waveguides. A software package for the analysis of optical waveguides has been developed on an EWS (engineering workstation).