Full-duplex optical communication system
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United States of America Patent
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Aug 17, 2004
Grant Date -
N/A
app pub date -
Dec 15, 2000
filing date -
Dec 15, 1999
priority date (Note) -
Expired
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Abstract
A method of full-duplex electromagnetic communication wherein a pair of data modulation formats are selected for the forward and return data links respectively such that the forward data electro-magnetic beam serves as a carrier for the return data. A method of encoding optical information is used wherein right-hand and left-hand circular polarizations are assigned to optical information to represent binary states. An application for an earth to low earth orbit optical communications system is presented which implements the full-duplex communication and circular polarization keying modulation format.
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