Design and simulation of an all optical 8 to 3 binary encoder based on optimized photonic crystal OR gates

Abstract

Abstract The most recently developed optical encoders are based on non-linear Kerr effect which require high input power. Here, we report 8 to 3 optical binary encoder based on linear effects which greatly reduces the input power requirement. The proposed encoder consists of three optical 4-input port OR gates and an optical buffer gate. Simulation results have proved correct operation states of the encoder and numerical analysis is done in order to additional evaluation. The maximum switching delay and total footprint of proposed structure are about 160 fs and 1418 µm 2 , respectively.