An all optical NOR gate based on the interaction between cosine-shaped input beams of orthogonal polarization

The design of an all-optical NOR gate is presented. The logic operation is performed by the nonlinear Kerr interaction between beams that enter with cosine field shapes in a planar waveguide, as could be obtained, for example, by input channel guides. The beams have orthogonal polarizations. The gate is not phase dependent, grants a fan-out of two, and might also work in the presence of moderate nonlinear absorption.