空间光通信由于其保密性能高,传输容量大,已经被应用到空—空、空—地等需要海量数据传输的场景中。国外光通信发展已经达到了实用阶段。国内由于器件研发尚不成熟,目前空通信也是处在实验阶段。本文分析了国际上近几年的空间光通信发展动态。 Due to its high confidentiality and large transmission capacity, space optical communication has been applied to such scenarios as air-space, space-time, etc. that require massive data transmission. The development of foreign optical communications has reached a practical stage. As the domestic device research and development is not yet mature, the current empty communication is also in the experimental stage. This article analyzes the developments of space optical communications in the world in recent years.