Drive circuit for high-speed modulation of a laser diode

Details Drive circuit for high-speed modulation of a laser diode Drive circuit for high-speed modulation of a laser diode

1995-04-21

1997-07-22

Bovernick, Rodney B.

Coherent light generators

Particular component circuitry

Optical pumping

372 26, H01S 300

Patent

active

056510179

ABSTRACT:
A drive circuit enables high-speed modulation of a laser diode. A transistor is associated with the laser diode. The transistor input is supplied with a constant bias current just below the lasing condition of the diode, and also to one or more switching currents which are shunted to the transistor input through Schottky diodes. This high-speed circuit can be used, for example, for modulating a writing beam in a "laser printer," or in a magnetic driver for a disk writer, or in fiber-optic communication.

REFERENCES:
patent: 4685097 (1987-08-01), van der Pat
patent: 4868675 (1989-09-01), Joosten et al.
patent: 5061949 (1991-10-01), Ogino et al.
patent: 5164745 (1992-11-01), Matsuoka

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