Composite logic gate element and multiplexer for optical computi

Details Composite logic gate element and multiplexer for optical computi Composite logic gate element and multiplexer for optical computi

1985-12-02

1988-01-19

Punter, William H.

350354, G02F 117

Patent

active

047201754

ABSTRACT:
An optically bistable, nonlinear optical device that produces an output that follows two hysteresis loops for an optical intensity variation input at a given frequency. One hysteresis loop follows a clockwise path of development, the other follows a counterclockwise path when the input field or optical intensity is ramped to a large value and returned again to a small value. These features of the device are effectively engineered by controlling the temperature of the input and output faces of the device, allowing optical logic gating and multiplex operation.

REFERENCES:
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Hajto et al., "Optical Bistability Observed in Amorphous Semiconductor Films", Philosophical Mag. B, 1983, pp. 347-366.
S. L. McCall, "Instabilities and Continuous-Wave Light Propagation in Absorbing Media", Physical Review A, Apr. 1974, vol. 9, No. 4, pp. 1515-1523.
D. A. B. Miller et al., "Optical Bistability Due to Increasing Absorption", Optics Letters, vol. 9, No. 5, May 1984, pp. 162-164.
M. Dagenais et al., "Cavityless Optical Bistability Due to Light-Induced Absorption Cadmium Sulfide", Applied Physics Letters, vol. 45, No. 3, Aug. 1984, pp. 210-212.

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