Ultrafast all-optical NOR gate based on intersubband and interband modulation operating at communication wavelengths

Abstract

An ultrafast all-optical NOR gate using intersubband and interband transitions in quantum wells is proposed. A proof-of-principle experiment is demonstrated using InGaAs/AlAsSb coupled quantum well structures operating at communication wavelengths (1.55 /spl mu/m and 1.3 /spl mu/m).