Accession Number : ADD004617

Title :   Electro-Optic Binary Adder.

Descriptive Note : Patent,


Personal Author(s) : Taylor,Henry F

Report Date : 16 Aug 1977

Pagination or Media Count : 6

Abstract : A common substrate supports a plurality of waveguides numbering one more than 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. (Author)

Descriptors :   *Patents, *Binary processors, *Electrooptics, Optical waveguides, Polarization, Delay circuits, Phase shift

Subject Categories : Electrooptical and Optoelectronic Devices
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE