Separate and simultaneous generation of multioutputs in a polarization-encoded optical shadow-casting scheme: design of half- and full adders and subtractors.
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abstract
A design algorithm for separate and simultaneous generation of multioutputs in a polarization-encoded optical shadow-casting (POSC) scheme is presented. The logic unit truth table is converted into POSC logic equations for true and false logic. These are then solved consistently to obtain source plane, input pixel, and the decoding mask characteristics. The algorithm is used to design binary half-adder and half-subtractor and full adder and full subtractor to carry out all operations with a fixed source plane and a fixed decoding mask. The results have been verified experimentally.
