Title :
Cascadable laser logic devices: discrete integration of phototransistors with surface-emitting laser diodes
Author :
Olbright, G.R. ; Bryan, R.P. ; Lear, K. ; Brennan, T.M. ; Poirier, G. ; Lee, Y.H. ; Jewell, J.L.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM, USA
Abstract :
A new class of cascadable optical logic devices is described which consists of integrated GaAs/AlGaAs phototransistors and surface-emitting lasers. The devices function as optical neurons (´smart pixels´), have high optical gain (a factor of >20 overall, >200 differential), very high on/off contrast (>2700, 34 dB) and are ideal for neural networks and optical computing applications.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; optical logic; phototransistors; semiconductor junction lasers; GaAs-AlGaAs phototransistors; cascadable laser logic devices; cascadable optical logic devices; discrete integration; high on/off contrast; high optical gain; neural networks; optical computing applications; optical neurons; semiconductors; surface-emitting laser diodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910140
