Method of high speed direct-modulation for common-cathode laser array
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jul 4, 2002
app pub date -
Feb 20, 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 summed modulation and bias current is directed to one of the vertical cavity surface emitting lasers to turn on the laser. The modulation current is pulled away from the vertical cavity surface emitting laser to turn off the laser.
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