Systems and methods for automatic power control of laser diodes

Details Systems and methods for automatic power control of laser diodes Systems and methods for automatic power control of laser diodes

2006-06-13

2006-06-13

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S038010, C372S038070

Reexamination Certificate

active

07061951

ABSTRACT:
Methods and system are provided for automatic power control of a laser diode, e.g., in a laser driver. In accordance with an embodiment of the present invention, a power controller includes a detector circuit adapted to detect the output of the laser diode and to produce a measured output therefrom. A comparator compares a desired output to the measured output, and produces an error signal therefrom. The error signal is provided to an integrator circuit that produces an integrated error signal. At least one digital-to-analog converter (DAC) uses the integrated error signal to produce a current drive signal that drives the laser diode.

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