随着光电子技术的发展, 空间通信技术的应用越来越广泛。激光传输系统要求具有低损耗、抗干扰、信噪比高的性能。为满足多通道的信号发射和接收的要求, 研制了抗杂散光干扰的滤光膜。依据光学薄膜理论, 设计了同时满足808 nm、1 064 nm高透过的双带通滤光膜。利用离子辅助沉积技术, 通过对石英晶振监控镀膜过程中的膜厚误差分析, 建立了关于膜层拟合度定量计算的数学模型, 并应用该模型制备了双带通滤光膜, 通过该模型所设计的膜系具有良好的可制备性, 满足实际使用要求。

With the rapid development of optoelectronic technology, the application of space communication technology becomes wider. The performances of low-loss, anti-interference and high signal to noise ratio are required by laser communication systems. Anti-stray light interference filter film is made to meet the requirements of multi-channel signal transmission and reception. According to optical thin film theory, the double band high pass filter film satisfying simultaneously 808 nm and 1 064 nm is designed. Using ion-assisted deposited technology and film thickness error analysis during quartz crystal coating monitoring process, a mathematical model about film fit quantitative calculation is built. And the model is used to fabricate double band-pass filter. The film system designed through the model can be fabricated easily and meets actual application requirements.