Demonstration of an all-optical logic OR gate using gain saturation in an SOA

In this paper, the all-optical realization of a logic OR gate using gain saturation in a standard semiconductor optical amplifier (SOA) is successfully experimentally demonstrated. This reported feasibility study, shows the all-optical OR function can be easily achieved with an extinction ratio of about 7 dB. (C) 2003 Wiley Periodicals, Inc.