Abstract: Free-space optical communication uses multibeam communications, for example between a base station and multiple remote stations. To improve efficiency and reduce complexity, the base station transmitter utilizes a single wide-angle objective lens for all of the optical beams' radiation sources. The optical radiation sources are provided with fiberoptic transmitting pigtails with output ends installed on a curved surface in relation to the single wide-angle objective lens at locations in the areas optically conjugated with the remote subscriber receivers. In a system for two-way communication, optical receivers are provided with fiberoptic receiving pigtails with input ends positioned on the curved surface at locations relative to the wide-angle objective lens, which are optically conjugated with the remote subscriber radiation sources.

Abstract: A free-space optical communication system utilizes an optical repeater system, which is installed between transmitting terminals and receiving terminals. Each optical receiver of the repeater system connects via a separate optical beam with one or more of the transmitting terminals. Two or more optical transmitters of the repeater system preferably communicate with each of the receiving terminals. Modules of the repeater system are spatially separated far enough from each other to prevent cross-talk between information on the beams, either at the receivers of the repeating system or at the receiving terminals. Receiving elements in the repeater system and/or in the destination receiving system preferably convert angular beam separation into spatial resolution between beam detectors.