Research on antenna based on free-space laser communication

Antenna, which whether transmits or receives correct signal or not is our main care and our direction, is an important part in any wireless communication systems. Because of the characteristics of laser different from radio, the antenna system of point-to-point laser communication system must be designed strictly. In this paper, we mainly study the optical system in the inter-satellites laser communication. We compare with three kinds of optical antennas: refractor and reflector and Catadioptrics of the passive optical system; we also analyze the effect of bandwidth to the WDM communication systems; we use the correlative software, simulate the curves of the performance of the optical antennas. These analyses will be the base of the system of WDM laser inter-satellites communication.