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A. L. Lentine, D. A. B. Miller, J. E. Henry,
J. E. Cunningham, L. M. F. Chirovsky, L. A. D'Asaro, "Optical logic using
electrically connected quantum well PIN diode modulators and detectors" Applied
Optics, 29, 2153-2163, (1990). The authors present new optoelectronic
logic devices or circuits consisting of electrically connected quantum well PIN diodes
capable of implementing any boolean logic function. One class of circuits uses single
beams to represent the logic levels and compares their intensities to a locally generated
reference signal. A second class of circuits routes signals as differential pairs. The
connections of diodes in these circuits resemble the transistor connections in NMOS and
CMOS logic families. They demonstrate simple optical programmable logic arrays (e.g.,
E=AB+CD) using both of these classes of circuits
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