Applied Optics · 1999 · 38 citations · 29 references
EngineeringComputer EngineeringElectrical EngineeringComputer ArchitectureOptoelectronicsPhotonicsCombinational Logic DescriptionDigital Logic DesignIntegrated OpticsOptical Signal ProcessingPhotonic Integrated CircuitsSilicon PhotonicsArithmetic CircuitsArithmetic Logic DescriptionArithmetic Logic Unit ArchitectureArithmetic Logic Unit DesignCombinational Logic DesignOptical ComputingOptical Logic GatesSignal-to-noise Ratio
A compact two-step modified-signed-digit arithmetic-logic array processor is proposed. When the reference digits are programmed, both addition and subtraction can be performed by the same binary logic operations regardless of the sign of the input digits. The optical implementation and experimental demonstration with an electron-trapping device are shown. Each digit is encoded by a single pixel, and no polarization is included. Any combinational logic can be easily performed without optoelectronic and electro-optic conversions of the intermediate results. The system is compact, general purpose, simple to align, and has a high signal-to-noise ratio.
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