Abstract

A differential technique is proposed for obtaining bipolar analog {−1…0…1} inputs, outputs, and connection weights in a mask-type optical crossbar switch. The technique compensates for the limitations of current component technology and permits the use of inexpensive, low-contrast spatial light modulators for reconfigurable switching matrices. The conclusions of this work may be extended to design improvements in a wide variety of optical computing implementations.

© 1989 Optical Society of America

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