plz send me documentation regarding satellite laser communication ..

laser communication doc report

The use of lasers for telecommunications in space. It is an application of laser communications and visible light communication.Two solar-powered satellites communicating optically in space via lasers.In outer space, the communication range of free-space optical communication is currently of the order of several thousand kilometers,but has the potential to bridge interplanetary distances of millions of kilometers, using optical telescopes as beam expanders.Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking. "Free space" means air, outer space, vacuum, or something similar. This contrasts with using solids such as optical fiber cable or an optical transmission line. The technology is useful where the physical connections are impractical due to high costs or other considerations.