Optical modulator drive circuit
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United States of America Patent
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May 25, 2004
Grant Date -
Jan 16, 2003
app pub date -
Jul 11, 2002
filing date -
Jul 12, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A voltage clamp transistor 12 has a main current path (i.e., drain-source path or emitter-collector path) serially connected to the output terminal 9 of a drive IC 1, and also has a control electrode (i.e., gate or source) with a predetermined voltage applied thereto. An optical modulator 10 of a laser diode or the like is connected either directly or via an AC-coupled capacitor to the output side of the transistor 12.
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