从双啁啾膜系原理出发 ,经过自行编制的软件优化计算 ,得到了由 5 4层介质膜组成的具有色散补偿功能的宽带高反镜 ,高反射率 (大于 99 9%)带宽宽达 12 0nm ,群延迟色散量为 - 5 0fs2 。对基于耦合模理论和传输线理论的双啁啾镜的原理和设计思路进行了分析 ,并通过计算机模拟验证了设计结果 ,分析了膜系各参量的改变对膜系的反射率和时延特性的影响。另外 ,在优化计算过程中发现了一些值得注意的有用的规律。 Based on the principle of dual chirp film system, a broadband high reflection mirror with dispersion compensation function consisting of 54 layers of dielectric films has been obtained through software self-programming. The high reflectivity (more than 99.9%) bandwidth is up to 12 0nm, the group delayed dispersion is - 5 0fs2. The principle and design method of double-chirped mirror based on coupled mode theory and transmission line theory are analyzed. The design results are verified by computer simulation. The effects of the changes of film parameters on the reflectivity and time delay of the film system are analyzed influences. In addition, some useful rules worth noting were found in the optimization calculation.