Abstract
In order to achieve multi-target simultaneous laser communication, research on one-to-many laser communication systems is carried out. The overall scheme and working principle of the system are introduced. A multi-target acquisition, pointing and tracking system (APT) based on optical antennas and fast steering mirrors (FSM) is designed, and the mirror linkage control method is adopted to improve the utilization efficiency of optical antennas. We have developed a prototype of the principle and carried out a dynamic demonstration experiment of One-Point to Multi-Point laser communication. The results show that the tracking accuracy of the APT system is better than $6\mu \mathrm{rad}$, the bit error rate under 2. 5Gbps communication rate is better than 1E-7. The experiment successfully established the One-Point to Two-Point laser communication link and carried out video transmission, which verified the feasibility of the One-Point to Multi-Point laser communication technology.
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