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D. A. B. Miller, "Device requirements
for digital optical processing" in "Digital Optical Computing," ed. R. A.
Athale, SPIE Critical Reviews of Optical Science and Technology, CR35,68-76,
(1990). I discuss the requirements for optical and optoelectronic devices for
large-scale use in digital processing systems. Optics has many potential advantages,
especially in helping communications within processors. It is difficult to make optical
logic devices because few nonlinear effects are large enough and because most device
concepts cannot satisfy the qualitative requirements for digital logic. Quantum well
symmetric self-electrooptic-effect devices are now good enough optical logic elements for
systems experiments with free-space optics. There are also future prospects for
large-scale integration of quantum well optical devices with electronics. This may
eventually allow the best of both electronic and optical features for better system
performance.
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