All-optical A/D conversion using integrated nonlinear guided wave optical circuitry
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机译:使用集成非线性导波光学电路的全光学A / D转换
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摘要
Methods and apparatus for all-optical analog to digital conversion. An analog optical input signal is directed along a path comprising a series of level sensing means for determining whether its intensity is above or below a threshold value. The optical signals from successive level sensing means are directed in pairs to optical exclusive- or gates to provide a digital optical signal to at least one of a plurality of individual optical output means according to a designated digital coding system whereby the optical digital indication corresponds to the sensed level of intensity of the analog optical input signal. Apparatus comprising channel waveguides and integrated optical devices provide economical systems for high-speed computation and other uses.
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