Optical logic and memory apparatus

Details Optical logic and memory apparatus Optical logic and memory apparatus

1985-07-03

1987-08-25

Davie, James W.

Coherent light generators

Laser logic system

250213A, 307311, H01S 300

Patent

active

046897933

ABSTRACT:
A complete set of optical logic gates and circuits based upon direct polarization switching, and various types of optical flip-flops based upon polarization bistability, in semiconductor lasers are described. By operating the laser in the direct polarization switchable mode, logic gates and circuits such as inverter, AND, NAND, OR and NOR can be provided with two optoelectronic switches or photodetectors. With the laser being operated in the polarization bistable mode, clocked optical flip-flops are operable with a few optoelectronic switches or photodetectors.

REFERENCES:
patent: 4506151 (1985-03-01), MacDonald et al.
patent: 4518934 (1985-05-01), Venkatesan
patent: 4555785 (1985-11-01), Scifres et al.
I. G. Akmenkalns et al, "Optically Controlled Latch Circuit", IBM TDB, vol. 3, No. 3, Aug. 1960, p. 38.

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