Title :
AlGaAs-GaAs pnpn differential optical switch
Author :
Hara, Kunihiko ; Kojima, Keisuke ; Mitsunaga, Kazumasa ; Kyuma, Kazuo
Author_Institution :
Mitsubishi Electric Corp., Hyogo, Japan
fDate :
5/1/1992 12:00:00 AM
Abstract :
A differential optical switch based on parallel-connected AlGaAs-GaAs pnpn structures is presented. Continuous input light makes it possible to discriminate between two optical inputs with a power difference of as low as 0.1 nW. The minimum operating energy with pulse inputs was 400 fJ. With the introduction of a storage operation of pnpn structures, the optical S-R flip-flop operation is also demonstrated with a 7.2-pJ optical input energy. The expansibility of the 2-D array is attractive in optical parallel processing systems, especially in optical neural networks
Keywords :
III-V semiconductors; aluminium compounds; flip-flops; gallium arsenide; optical logic; optical switches; p-n heterojunctions; 400 fJ; 7.2 pJ; AlGaAs-GaAs; III-V semiconductors; differential optical switch; expansibility; minimum operating energy; optical S-R flip-flop operation; optical input energy; optical neural networks; optical parallel processing systems; parallel connected pnpn structures; pnpn structures; power difference; storage operation; Flip-flops; Lighting; Neural networks; Optical arrays; Optical computing; Optical fiber networks; Optical switches; Parallel processing; Stimulated emission; Voltage;
Journal_Title :
Quantum Electronics, IEEE Journal of
