Optoelectronic Logic Gates Growing Computers in Space Optical

Growing Computers in Space? Optical vs Electronics Switching. . . Novel Materials Allowing Computers

Spatial Light Modulator +ve SLM Voltage Transparency 1 1 0 0 -ve SLM Voltage

NOT Gate o/p A Electronic NOT Gate A O/E -ve SLM CLS Opto-Electronic NOT

AND Gate A o/p B Electronic AND Gate +ve SLM A o/p A B

XOR Gate A o/p B Electronic XOR Gate -ve SLM A o/p A B

A Optoelectronic Full Adder B -ve SLM O/E O/E Sum -ve SLM S U

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Optoelectronic Logic Gates

Growing Computers in Space? Optical vs Electronics Switching. . . Novel Materials Allowing Computers to Work near the Speed of Light! Optical chips powered by light Optical processor made of optical chips

Spatial Light Modulator +ve SLM Voltage Transparency 1 1 0 0 -ve SLM Voltage Transparency 1 0 0 1 Opto-Electronic Converter O/E Light Voltage

NOT Gate o/p A Electronic NOT Gate A O/E -ve SLM CLS Opto-Electronic NOT Gate o/p A o/p 0 1 1 0

AND Gate A o/p B Electronic AND Gate +ve SLM A o/p A B o/p 0 0 1 1 1 O/E Beam Splitter +ve SLM B Opto-Electronic AND Gate 100% mirror

XOR Gate A o/p B Electronic XOR Gate -ve SLM A o/p A B o/p 0 0 1 1 1 0 O/E -ve SLM Beam Splitter B Opto-Electronic XOR Gate 100% mirror

Construct optoelectronic OR gate

A B Sum Carry 0 0 0 1 1 0 1 0 1 Half Adder A B Carry +ve SLM Carry Sum O/E Electronic Half Adder O/E +ve SLM -ve SLM Sum Beam Splitter O/E 100% mirror O/E -ve SLM Opto-Electronic Half Adder

Electronic Full Adder

A Optoelectronic Full Adder B -ve SLM O/E O/E Sum -ve SLM S U M -ve SLM +ve SLM O/E O/E +ve SLM C A R R Y