进化算法在膜系自动设计中的应用  

Optical thin film automatic design using adaptive evolutional algorithm

作　　者：王霞[1] 吕岿[1] 

机构地区：[1]上饶师范学院物理系,江西上饶334001

出　　处：《应用光学》2008年第6期957-960,共4页Journal of Applied Optics

基　　金：江西省教育厅科学技术研究项目资助课题(赣教技字[2006]278号)

摘　　要：在膜系的优化设计中,以膜系结构为参数的评价函数是一个非常复杂的多峰值函数。传统的优化算法强烈地依赖于膜系的初始设计,且易陷入较接近于初始结构的一个局部极值处。为解决这一矛盾,将全局寻优的自适应进化算法用于光学薄膜的膜系优化设计,设计中只需问题解的编码和适应度函数,而不依赖其他任何辅助信息(包括初始结构),有利于自动设计的进行。将该方法与常用设计方法进行了比较。高反膜、分光镜的实例优化表明:在相同设计要求下,用自适应进化算法可以得到更加合理的膜系结构,而且膜系结构简单,设计灵活,容易实现。理论和实践均表明该方法是高效和可靠的。In the optimization design of the optical film system, the evaluation function based on film system structure is a complicated multi-peak function. Traditional optimization algorithms depend heavily on the initial design of the film systems, and are prone to fall into the local extreme values close to the initial structure. To solve the problem, the global-optimized adaptive evolutional algorithm is applied to the film-system optimization design of optical thin film. In the design process, only the solution code and the fitness function are needed and no additional information such as initial design is required. The evolutional algorithm was compared with the popular film system design methods. The optimization examples of high reflective films and beam-splitting films show that the algorithm can be used to obtain more reasonable film system structure under the same design requirement. The design is flexible and films can be easily prepared.

关 键 词：自适应进化算法 膜系设计 光谱反射率 自动设计 

分 类 号：O484.4[理学—固体物理]