Title :
A rapid optoelectronic half-adder logic composed of a pair of GaAs metal-semiconductor-metal photodetectors
Author :
Nakajima, Kazutoshi ; Iida, Takashi ; Sugimoto, Ken-Ichi ; Kan, Hirofumi ; Mizushima, Yoshihiko
Author_Institution :
Hamamatsu Photonics, Japan
fDate :
4/1/1990 12:00:00 AM
Abstract :
A novel optoelectronic half-adder logic, composed of only two GaAs metal-semiconductor-metal photodetectors (MSM-PDs), is reported. The optoelectronic logic utilizes the features of the MSM-PD for both polarities of electrical bias (positive and negative). Without any other active devices such as transistors, the output delay time is short, less than 100 ps for the entire half-adder operation, which assures a very fast arithmetic operation
Keywords :
III-V semiconductors; adders; gallium arsenide; integrated optoelectronics; metal-semiconductor-metal structures; optical logic; photodetectors; GaAs; electrical bias; metal-semiconductor-metal photodetectors; negative; optoelectronic half-adder logic; output delay time; polarities; positive; very fast arithmetic operation; Arithmetic; Capacitance; Delay effects; Electric resistance; Electrodes; Gallium arsenide; Logic devices; Photodetectors; Schottky barriers; Signal generators;
Journal_Title :
Quantum Electronics, IEEE Journal of
