Patent ID: 6721510
Filing Date: 2004-04-13
Classification: H04B

Abstract:
A free-space optical data transmission system, comprising:first and second telescopes spaced from and aimed at each other, a light transmitter operably coupled to the first telescope for providing data-encoded light to the first telescope which directs that data-encoded light across a first free-space optical path to the second telescope, a light receiver operably coupled to the second telescope for receiving the data-encoded light from the first telescope, a first adaptive optics system provided with the first telescope for determining characteristics of a wavefront of light transmitted from the second telescope across a second free-space optical path to the first telescope and pre-correcting a wavefront of the data-encoded light in response to said characteristics, wherein the second free-space optical path and the first free-space optical path encounter substantially the same aberrations, and second adaptive optics system provided with the second telescopes for determining characteristics of a wavefront of light transmitted from the first telescope across the first free-space optical path to the second telescope and correcting a wavefront of the data-encoded light in response to said characteristics.