Laser communication transceiver and system

Details Laser communication transceiver and system Laser communication transceiver and system

1994-02-22

1998-01-20

Hellner, Mark

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359172, H04B 1000

Patent

active

057106525

ABSTRACT:
A laser communication transceiver 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.

REFERENCES:
patent: 4829597 (1989-05-01), Gelbwachs
patent: 5119225 (1992-06-01), Grant et al.
patent: 5282073 (1994-01-01), Defour et al.
patent: 5390040 (1995-02-01), Mayeux
patent: 5448391 (1995-09-01), Iriyama et al.
patent: 5465170 (1995-11-01), Arimoto
patent: 5526161 (1996-06-01), Suzuki et al.

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