Alternative design and analysis of all-optical ultrafast majority gate using 2D photonic crystals

All-optical photonic crystals-based majority gate with a modified logic expression to enhance performance has been designed and simulated. To analyze the design, we have calculated the performance parameters ER, CR, Q and AM. The optimized values of ER (32.04[Formula: see text]dB), CR (37.81[Formula: see text]dB), Q (19.70) and AM (0.59[Formula: see text]dB) demonstrate both high efficiency and practical feasibility. Defects of different sizes are incorporated to manipulate the transmission of light as required. Bit error rate for digital transmission is calculated to be almost negligible (–10[Formula: see text] and a high data rate of 20.40[Formula: see text]Tb/s is confirmed by a small response time of 0.049 ps. The footprint required to design the majority gate is less than 280[Formula: see text][Formula: see text]m 2 .