All-optical AND gate using cross-gain modulation in semiconductor optical amplifiers

Abstract

By using the cross-gain modulation of semiconductor optical amplifiers (SOAs), a novel all-optical AND gate has been successfully demonstrated at 10 Gb/s. Firstly, Boolean (B) over bar was obtained using the first SOA with signal B and clock injection. Then, the all-optical AND gate is achieved by simultaneously injecting signal A and signal (B) over bar out of the first SOA.