Laser driver loop control and method

Details Laser driver loop control and method Laser driver loop control and method

2005-06-09

2008-11-11

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular component circuitry

Having feedback circuitry

C372S038020, C372S038070

Reexamination Certificate

active

07450619

ABSTRACT:
Various systems and methods are provided for biasing a laser. In one example, a feedback circuit establishes a bias current in a laser. A stabilizing capacitor is coupled to the feedback circuit, the stabilizing capacitor slowing the response of the feedback circuit to a feedback input. A capacitor charging circuit is included in the feedback circuit. The capacitor charging circuit is activated upon a start-up of the feedback circuit to charge the stabilizing capacitor. Thereafter, the capacitor charging circuit is deactivated when a charge on the stabilizing capacitor reaches a predefined charge threshold.

REFERENCES:
patent: 5500561 (1996-03-01), Wilhelm
patent: 5592067 (1997-01-01), Peter et al.
patent: 2004/0225327 (2004-11-01), Norton et al.
patent: 2005/0129075 (2005-06-01), Anderson et al.
International Search Report for PCT/US06/21444 dated Nov. 7, 2007.

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