Asynchronous bias control for an optical modulator using a multiple tone detection technique with phase correction
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United States of America Patent
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Apr 14, 2020
Grant Date -
Oct 12, 2017
app pub date -
Apr 8, 2016
filing date -
Apr 8, 2016
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Abstract
In an asynchronous optical modulation system, a drive circuit may generate a plurality of dither tones in accordance with a predetermined dither frequency ratio. Based on the components of the dither frequency ratio, the optical modulation system may be configured to determine a feedback signal magnitude component that is independent of the delay τ and a feedback signal sign component that is also independent of the delay τ. A feedback signal that is independent of the delay τ can then be reconstructed based on the feedback signal magnitude component and the feedback signal sign component.
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