Ultrafast digital optical signal processing using a Venn diagram based spatial encoding technique
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United States of America Patent
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Aug 4, 1992
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N/A
app pub date -
Jul 26, 1990
filing date -
Jul 26, 1990
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Expired
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Abstract
An ultrafast digital optical signal processor includes a body of a third order nonlinear material and three input beams, two beams counterproprogating in the material on-axis and the third beam propagating off-axis, all simultaneously, to generate an output beam that counterpropogates with respect to the off-axis input beams. A set of three voltage controlled spatial light modulators are used for encoding the three input beams in accordance with a three-set Venn diagram based encoding scheme. The output beam is split into two parts which are decoded separately using a mask for one beam part and a spatial light modulator for the other beam part.
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