Methods and circuits for controlling drive mechanisms
US7899096B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2009 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Oct 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0092
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.