Point-to-point laser communication device
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United States of America Patent
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-
May 19, 1998
Issued Date -
N/A
app pub date -
Apr 1, 1994
filing date -
Aug 27, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For transmitting information via laser beams to and from other similar laser communication transceivers. Each transceiver comprises a wavelength locked beacon laser providing a beacon beam. The transceivers determine the precise location of other transceivers by detecting these beacon beams with beacon receive units comprising atomic line filters matched to the beacon wavelength. Signals are transmitted by imposing an electronic signal on laser beams produced by one or more signal laser devices. These signals are directed with precision at other transceivers, and the signal beams are detected with very narrow field of view signal receive units. In a preferred embodiment, these transceivers are installed on 66 satellites in low earth orbit and on selected mountain tops on earth to provide a global communication system.
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