Title :
Optical tristable device by vertical and direct integration of heterojunction phototransistors and laser diodes
Author :
Noda, Susumu ; Kobayashi, Yasuhiro ; Takayama, Tom ; Shibata, Kimitaka ; Sasaki, Akio
Author_Institution :
Dept. of Electr. Eng., Kyoto Univ., Japan
fDate :
12/1/1992 12:00:00 AM
Abstract :
A light-controlled optical tristable device with an optical gain is actualized. The device has a configuration of vertical and direct integration of two heterojunction phototransistors (HPTs) on a laser diode (LD) along the cavity direction. An external optical input causes a bistable operation in one HPT+LD part. With the optical connection between two HPTs through the LD stripe, a bistable operation also occurs in the other HPT+LD part. The light-controlled optical tristability is achieved with the combination of the bistable operation in each HPT+LD part
Keywords :
integrated optoelectronics; laser cavity resonators; optical bistability; phototransistors; semiconductor lasers; LD stripe; bistable operation; cavity direction; direct integration; external optical input; heterojunction phototransistors; laser diodes; light-controlled optical tristable device; optical connection; optical gain; optical tristability; vertical integration; Diode lasers; Heterojunctions; Integrated optics; Optical bistability; Optical buffering; Optical device fabrication; Optical devices; Phototransistors; Stimulated emission; Wet etching;
Journal_Title :
Quantum Electronics, IEEE Journal of
