Abstract
Nonlinear all-optical circuit elements can be used to create indefinitely extensible optical logic. By the use of a 'lock and clock' architecture and an off-axis configuration of the power and signal beams, signal corruption can be avoided and standardized signal levels through cascaded devices maintained. Several loop circuits have been operated to demonstrate a simple 'optical classical finite state machine'.
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References
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Smith, S., Walker, A., Tooley, F. et al. The demonstration of restoring digital optical logic. Nature 325, 27–31 (1987). https://doi.org/10.1038/325027a0
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DOI: https://doi.org/10.1038/325027a0
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