We are going to design an optical Majority gate.
Photonic crystals will be used for designing this
structure. Resonant cavities are used to realize the
threshold switching for the working mechanism of the
optical Majority gate. Doped glass rods are added to
cavities to create the nonlinear cavities. The simulations
are done with Rsoft photonics CAD based on finite
difference time domain method. The proposed majority
gate has 3 input ports and only one output port. The
output port is ON, when at least two of the input ports
are ON. The working wavelength of the proposed
structure is 1550 nm. For the proposed all optical
majority gate the ON/OFF contras ratio and the bit rate
are 19.5 dB and 500 GS/s respectively. تفاصيل المقالة