Airborne free-space-optical system utilizing three-tier,...

Details Airborne free-space-optical system utilizing three-tier,... Airborne free-space-optical system utilizing three-tier,...

2007-01-30

2007-01-30

Chan, Jason (Department: 2613)

Optical communications

Optical communication over freee space

Transceivers

C398S131000, C398S128000, C359S210100

Reexamination Certificate

active

10675066

ABSTRACT:
An optical head is provided for a free space optical communications system. The optical head is utilized for transmitting and receiving modulated infrared laser beams. The optical head includes an optical amplifier, a circulator, an ultrafine-steering element, a fine-steering element, a course-steering element, and a fine track sensor. Additionally, a method is provided for facilitating airborne free space optical communications between an airborne host platform and a link platform. Each platform has an optical head which transmits and receives data via modulated infrared laser beams, wherein the host includes at least an optical head having a fine, coarse, and ultrafine steering element configured in a cascaded three-tier steering element architecture.

REFERENCES:
patent: 5198653 (1993-03-01), Shen et al.
patent: 5710652 (1998-01-01), Bloom et al.
patent: 6097522 (2000-08-01), Maerki et al.
patent: 6657783 (2003-12-01), Presby et al.
patent: 2002/0046763 (2002-04-01), Berrios et al.

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