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.
© 1999 Optical Society of America
(130.2790) Integrated optics : Guided waves
(130.3750) Integrated optics : Optical logic devices
(130.4310) Integrated optics : Nonlinear
(190.3270) Nonlinear optics : Kerr effect
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
M. Zitelli, E. Fazio, and M. Bertolotti, "All-optical NOR gate based on the interaction between cosine-shaped input beams of orthogonal polarization," J. Opt. Soc. Am. B 16, 214-218 (1999)