Modulators for vertical cavity surface emitting lasers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Aug 15, 2002
app pub date -
Apr 12, 2002
filing date -
Nov 6, 2000
priority date (Note) -
Abandoned
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Abstract
A drive circuitry that drives a number of vertical cavity surface emitting lasers having a common cathode. The drive circuitry includes a modulator and a dummy laser. The modulator controls the vertical cavity surface emitting lasers. A modulation and bias current is directed to one of the vertical cavity surface emitting lasers to turn on the laser. A modulation current is directed away from the vertical cavity surface emitting laser to turn off the laser.
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