Optically crosslinked communication system (OCCS)

Details Optically crosslinked communication system (OCCS) Optically crosslinked communication system (OCCS)

1995-06-07

1996-09-03

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359117, 359128, 455 133, 342352, H04B 1000, H04B 7185

Patent

active

055529208

ABSTRACT:
An optically-based communication system hosted on an elevated platform (e.g., a satellite a tower, or other platform having a substantial vantage point) that uses multiple spatially diverse transmit and receive beams that are optically cross coupled to fully reuse the spectrum and which will create a fully interactive, high bandwidth, high capacity, fully switched communication system. The elevated platform (i.e., satellite, orbiting or tethered vehicles, airborne platforms, towers, etc.) reuses its assigned bandwidth in each of (N) multiple beams (or sectors). The beams are formed by either RF or optical means. The specific users in each beam are then spatially separated in frequency by use of an optical "Bragg Cell." The separated signals are then duplicated through a half mirror and a full mirror and recombined optically to create outputs that are unique combinations of frequencies from each full set of input beams. The recombined signals are then shifted to the transmit band and retransmitted through the same (N) multiple beams. The entire communication system then becomes a single elevated platform which can fully switch a high bandwidth, high channel capacity network.

REFERENCES:
patent: 4931802 (1990-06-01), Assal et al.
patent: 5119225 (1992-06-01), Grant et al.
patent: 5428814 (1995-06-01), Mort et al.

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