Providing a suitable output current to a laser diode

Details Providing a suitable output current to a laser diode Providing a suitable output current to a laser diode

2008-01-14

2009-10-27

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S038070

Reexamination Certificate

active

07609735

ABSTRACT:
A laser diode driving circuit capable of providing a suitable output current to a laser diode is disclosed. The laser diode driving circuit includes a current supply, a first pseudo laser diode, a second pseudo laser diode, and an output current mirror circuit. An input current provided by the current supply is output through the output current mirror circuit to the laser diode. By making the characteristic of each of the first and second pseudo laser diodes substantially equal to the characteristic of the laser diode, the non-linearity between the input current and the output current is compensated.

REFERENCES:
patent: 5315606 (1994-05-01), Tanaka
patent: 7336687 (2008-02-01), Kubota
patent: 4-359482 (1992-12-01), None
patent: 5-5344293 (1993-12-01), None
patent: 3130825 (2000-11-01), None

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