LASER POWER CONTROL USING BIAS AND MODULATION CURRENT FEEDBACK
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United States of America Patent
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Issued Date -
Jan 30, 2014
app pub date -
Dec 21, 2012
filing date -
Jul 24, 2012
priority date (Note) -
Abandoned
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Abstract
Techniques are described for maintaining the extinction ratio of an output optical signal over temperature and aging. In some examples, the techniques may determine the instantaneous slope efficiency of the laser outputting the optical signal, while the laser is outputting the optical signal. Based on the determined slope efficiency, the techniques may determine the needed drive current components (e.g., at least one of the bias current and the modulation current) that results in maintaining the extinction ratio to within a desired range.
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