فهرست نشریات علمی دسترسی آزاد ایران

A new configuration of an all optical (2 input) NOR gate based on two-dimensional photonic crystals is proposed. The structure is based on 20*20 rods of silicon in the background of air. The square-ring resonator shaped structure contains three inputs and one output port. Three input ports (Ctrl, A and B) are introduced in to the structure for achieving the appropriate application. In order to investigate the functionality of the structure (functioning as a logic NOR gate), photonic band gap (PBG), field distribution and transmitted power spectrum are considered. PBG and field distribution are obtained considering the plane wave expansion and finite difference-time-domain methods, respectively. All the states of a NOR gate (truth table or logical values) are considered by applying related inputs to the input ports (incident field with the wavelength in the PBG region). The bit rate, normalized intensity and rise time of 2.5Tbit/s, 99% and 2ps, are azlso obtained for the gate. The obtained logic NOR gate can be an appropriate candidate for utilization in optical integrated circuits.