Tunable dynamic gain flattening filter using polarization delays
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United States of America Patent
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Jan 25, 2005
Grant Date -
Jan 10, 2002
app pub date -
Mar 15, 2001
filing date -
Jun 16, 1997
priority date (Note) -
Expired
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Abstract
A dynamic gain flattening filter includes a first filter stage. The first filter stage has a first tunable coupling member and a first differential delay with first and second tunable delay paths. The first tunable coupling member adjusts an amount of power of the optical signal that is divided onto the first and second tunable delay paths of the first differential delay.
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