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Multifunctional all-optical signal processing scheme for simultaneous multichannel WDM multicast and XOR logic gates based on FWM in QD-SOA

Through FWM in our fabricated QD-SOA and without additional pumps, three 1-to-3 WDM multicasts and three XOR logic gates are simultaneously realized for three 10 Gbps NRZ-DPSK signals.

The error-free performance is achieved for all of the signals and the power penalties are <; 1.3dB at BER of 10-9.