Research status and development trend of space laser communication

This paper reviews the outstanding advantages of space laser communication and gives the operating plans of main foreign communication links and their technological parameters.It describes the present situation of space laser communication in the United States,Europe and Japan in detail,and explains the key technologies of space laser communication.It points out that the transmission speed of the laser communication will be faster and faster in future and the communicating model also can be changed from the points to points to the relaying repeater and constructing space communication networks.Finally,this paper introduces the development of space laser communication briefly in China.