Title :
High-contrast optoelectronic logic device using a waveguide multiple-quantum-well optical modulator
Author :
Bradley, P.J. ; Wheatley, P. ; Parry, Guillaume ; Midwinter, J.E. ; Mistry, Perhaad ; Roberts, Jeffrey S.
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
We present an optical logic device which demonstrates hard-limiting of outputs and which has the potential for large fan-out and fast response. It consists of a waveguide modulator made from GaAs/AlGaAs multiple-quantum-well material and phototransistor, and exhibits a contrast in excess of 20.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; logic devices; optical information processing; optical modulation; optical waveguide components; optoelectronic devices; GaAs-AlGaAs; III-V semiconductors; MQW material; fast response; hard-limiting; large fan-out; multiple-quantum-well; optical information processing; optoelectronic logic device; phototransistor; waveguide modulator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870150
