本文介绍了一种解决红外跟踪系统中探测器和致冷器组件位于万向支架机构上各种弊病的方法。利用纤维光束的柔软性，应用光纤耦合技术，可以让探测器和致冷器组件放在离万向支架一定距离上。文中着重论述了光纤与探测器间的光耦合问题，并就一组合透镜耦合方案作了具体设计计算。最后谈了谈光纤耦合技术研究的总体思路和对以后工作的设想。 This article describes a solution to the shortcomings of detectors and cooler assemblies located on gimbal mechanisms in infrared tracking systems. Utilizing the flexibility of the fiber beam, fiber-coupled technology allows the detector and cooler components to be positioned at a distance from the gimbal. In this paper, the problem of optical coupling between fiber and detector is emphatically discussed, and the design and calculation of a combined lens coupling scheme are made. Finally talk about the general idea of ​​fiber coupling technology research and ideas for future work.