Research On Simulation And Optimization Design Of Several Optical Devices

Optical devices acting as the footstone of photoelectronic industry are of great importance. With the development of science and technology, especially in the fields of optical communication and information technology, the newer, higher requirements for the development of various types of optical devices have been put forward, and traditional design techniques of optical devices also face a severe challenge. In recent years, the rapid development of computer technology provides hardware conditions for the simulation and optimization of optical devices. How to use computer modeling and simulation to estimate the optical properties of the films and optimize the structure of thin film devices, etc. are important questions related to the optical industry development.This work studies several key techniques in information optics system and device modeling and simulation. According to a number of key technology researches, an optical design and optimization software has been developed by using C#to call Fortran library in combination with a variety of control program. It is used to achieve optical thin film design and optimization, to analyze the characteristics of thin films, and to provide forward-looking guidance for practical production.This work mainly includes the following contents:i) Encryption system based on polarization optics; ii) Calculation of the basic properties of optical thin films including transmittance, reflectance, the phase shift, the electric field distribution, magnetic field distribution, the equivalent phase thickness; iii) Modeling and simulation for optical devices; iv) Display for Text,2D and3D results; v) Optimization for improving the performance of thin film devices using various algorithms such as needle method, genetic algorithm optimization; vi) MVCF(Model-View-Control-Fortran) loosely coupled framework to realize modularization.With help of the techniques developed in this study, the encryption system based on polarization optical devices was simulated, and several optical thin film devices were also simulated and optimized. The results show that the proposed encryption system is safer and more anti-attacking; and the performances of the optimized optical thin film devices are satisfactory. The reliability of the results was testified in comparison with those from related literatures.