Laser driver circuit

Details Laser driver circuit Laser driver circuit

2005-04-25

2009-02-17

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular component circuitry

Having feedback circuitry

C372S038020

Reexamination Certificate

active

07492797

ABSTRACT:
A laser driver circuit driving a laser diode to generate an optical output corresponding to an input data, and controlling the optical output based on an output current from a photodiode that detects the optical output. The output current is converted into a voltage signal, whose amplitude is detected after filtering the voltage signal by a low-pass filter. A reference signal corresponding to the input data is generated, and its amplitude is detected. A modulator for generating a modulation current regulates the amplitude of the modulation current according to the difference between the two detected amplitudes.

REFERENCES:
patent: 3749476 (1973-07-01), Daly et al.
patent: 4733398 (1988-03-01), Shibagaki et al.
patent: 4813048 (1989-03-01), Yamane et al.
patent: 4835782 (1989-05-01), Kaede et al.
patent: 5020062 (1991-05-01), Cusack et al.
patent: 5224112 (1993-06-01), Uesaka
patent: 5268916 (1993-12-01), Slawson et al.
patent: 5473460 (1995-12-01), Haner et al.
patent: 6466595 (2002-10-01), Asano
patent: 2003/0231853 (2003-12-01), Sato et al.
patent: 04-139779 (1992-05-01), None
patent: 09-092916 (1997-04-01), None

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