Realization of all-optical XOR, NOR, and NAND gates in single format by using semiconductor optical amplifiers

Abstract

By using the cross gain modulation (XGM) characteristics of semiconductor optical amplifiers (SOAs), multi-functional all-optical logic gates including XOR, NOR, and NAND gates are successfully demonstrated at 10 Gbps in single format. Numerical simulation is also performed by using the transmission-line laser model (TLLM), which is confirmed by using three SOAs experimentally. These combined all-optical multi-functional logic gates will provide more complex and complicated all-optical logic operations.