Optical semiconductor device

Details Optical semiconductor device Optical semiconductor device

1993-03-11

1994-07-19

Epps, Georgia Y.

Coherent light generators

Particular active media

Semiconductor

372 45, H01S 319

Patent

active

053316592

ABSTRACT:
An optical semiconductor device in which both of positive input and negative input are possible is disclosed. In the optical semiconductor device, two heterojunction phototransistors are connected in parallel of each other to the cathode of a laser diode. An optical memory in which setting, i.e., writing and resetting, i.e., erasing by light are possible is also disclosed. In the optical memory, two heterojunction phototransistors are connected in parallel of each other to the cathode of a laser diode to make a memory cell.

REFERENCES:
patent: 4833511 (1989-05-01), Sugimoto
patent: 4969152 (1990-11-01), Burghardt et al.
patent: 5068870 (1991-11-01), Yagi et al.
patent: 5202896 (1993-04-01), Taylor

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