OPTICAL NANO-HALF ADDER Russian patent published in 2011 - IPC G06E3/00 B82B1/00 

FIELD: physics.

SUBSTANCE: nanoadder has first and second optical nanofibres, an output optical nanofibre, an optical nanofibre coupler, an optical nanofibre N-input coupler, two extensible nanotubes, two constant optical signal sources and an optical nanofibre N-output splitter. The output of the second source is connected to the input of the N-output splitter, whose outputs are optically connected to inputs of the N-input coupler. The output of the first source is connected to the input of the first nanofibre, whose output if optically connected to the input of the second nanofibre, the output of which is optically connected to the input of the output nanofibre. The extensible nanotubes lie between the output of the coupler and the output of the N-input coupler on the propagation axis of their output optical signals. In the initial position, the inner nanotube breaks the optical connection between the output of the first nanofibre and the input of the second nanofibre and between outputs of the N-output splitter and inputs of the N-input coupler.

EFFECT: modulo two addition of optical signals with high speed which is potentially achievable for pure optical information processing devices, simplification of the device and nanoscale design of the device.

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