Novel all-optical logic gate using an add-drop filter and intensity switch

We propose new system of an all-optical AND gate and inverter that can be used to generate logic operation result by using a short pulse laser input. A system consists of an add-drop optical filter and an intensity switch that can be integrated into a single system. We have successfully simulated AND gate and inverter. Results obtained have shown that they can be used in terms of truth tables satifaction. Furthermore, the DeMorgan theory can be applied to produce other logic operations. For furture work, we can construct all optical routers that operate switching and routing method in an optical layer.