Methods and circuits for controlling drive mechanisms

Details Methods and circuits for controlling drive mechanisms Methods and circuits for controlling drive mechanisms

2011-03-01

2011-03-01

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular beam control device

Having particular beam control circuit component

C372S029010, C372S029020, C359S326000

Reexamination Certificate

active

07899096

ABSTRACT:
A method for aligning an optical package includes applying a dither waveform and an advancement waveform to a drive mechanism. The optical package includes a semiconductor laser operable to emit an output beam with a first wavelength, a wavelength conversion device operable to convert the output beam to a second wavelength, adaptive optics configured to optically couple the output beam into a waveguide portion of an input facet of the wavelength conversion device, and a drive mechanism coupled to the adaptive optics and configured to adjust a position of the output beam. The dither waveform oscillates the adaptive optics back and forth in first and second directions to oscillate the output beam on the input facet. The advancement waveform advances the adaptive optics in an adjustment direction. Rising and falling edge times of the dither waveform are greater than rising and falling edge times of the advancement waveform.

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