文章以CO2激光器为光源，使用透镜耦合，将激光耦合到光纤并对这种耦合进行了研究。运用ZEMAX软件对CO2激光光源与光纤模型进行建模分析，并设计了一种新型的可用于传输10.6 μm CO2激光的低损耗带隙型红外光子晶体光纤，运用结构参数r1=11.39 mm、r2=-25.43 mm、透镜厚度为3 mm、有效焦距BFL=11.16 mm的硒化锌透镜进行耦合，得到束腰与透镜的距离为1 102.50 mm，像方束腰到透镜的距离为17.30 mm，耦合值为94%。

Using CO2 laser as a light source, this paper investigates coupling the laser light into a Photonic Crystal Fiber (PCF) by using a lens. It first conducts the modeling and analysis of the laser light and fiber model by using the ZEMAX software and designs a novel low-loss Photonic Band-Gap (PBG) infrared PCF for transmitting 10.6 μm CO2 laser light. Then, it completes the coupling by using a ZnSe lens with the structural parameters of r1=11.39 mm, r2=－25.43 mm, thickness of 3 mm and BFL=11.16 mm and finds that the distance between the waist and the lens is 1 102.50 mm, that between the image waist and the lens is 17.30 mm and the coupling value is 94%.