Reducing cross-modulation in multichannel modulated optical systems
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United States of America Patent
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Nov 17, 2015
Grant Date -
Apr 8, 2010
app pub date -
Oct 3, 2008
filing date -
Oct 3, 2008
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Abstract
A modulated optical system with cross-modulation compensation reduces or corrects cross-modulation that might occur in a multichannel RF signal modulating a laser. The system detects the cross-modulation, for example, by detecting an envelope of the RF signal or by detecting RF power fluctuations, generates a cross-modulation detection signal, and imparts a compensating cross-modulation by adjusting a bias current of the laser in response to the cross-modulation detection signal.
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