Electro-optic binary adder

Details Electro-optic binary adder Electro-optic binary adder

1976-06-28

1977-08-16

Smith, Jerry

Registers

Transfer mechanism

Traveling pawl

350150, G06F 756

Patent

active

040428141

ABSTRACT:
A common substrate supports a plurality of waveguides numbering one more n the number of bits in the binary addends to be summed. Linearly polarized light is transmitted along each of the waveguides and a plurality of electrodes connectable to an electrical potential representative of a binary bit. The electrodes have discrete lengths contiguous to the waveguides for causing .pi.-radian phase retardation of light propagation upon application of the electrical potential. A polarization separator receives the output of each waveguide and produces signals commensurate with orthogonally polarized components. Photo detectors responsive to the signals representing each of the components produce commensurate electrical output signals which are, in turn, amplified and compared in an analog comparator for producing a binary output signal representative of the relative amplitudes of each pair of signals representing the orthogonally polarized components in each of the waveguides.

REFERENCES:
patent: 3270187 (1966-08-01), Fomenko
patent: 3466433 (1969-09-01), Duda et al.
patent: 3680080 (1972-07-01), Maure
patent: 3903400 (1975-09-01), Nisenson

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