Simultaneous Optical Half-Adder and Half-Subtracter Using a Single-Slot Waveguide
We propose a simple approach for simultaneous optical half-adder and half-subtracter using a single-slot waveguide that offers tight light confinement and enhanced nonlinearity.By exploiting the parametric depletion effect of twin degenerate four-wave mixing processes in the slot waveguide, we simulate 160-Gbit/s half-adder (A + B) and half-subtrac