Tunable add-drop filters using two independent optical paths
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United States of America Patent
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Sep 21, 2004
Grant Date -
N/A
app pub date -
Nov 1, 2002
filing date -
Nov 1, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Techniques for adding and dropping a wavelength or band using two individual optical paths are disclosed. The two individual optical paths are configured to maintain one path active while the other is in stand-by setup or tuning mode. While one optical path is adding and dropping a wavelength, the other optical path can be calibrated for a new wavelength. When an optical switch switches from one path to another, a new wavelength to be added and dropped is effectuated.
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