Optical waveguides – With optical coupler – Plural
Patent
1997-06-20
2000-03-07
Lee, John D.
Optical waveguides
With optical coupler
Plural
385 16, 359127, 359128, 359130, H04J 1402
Patent
active
060350806
ABSTRACT:
In accordance with the invention, an optical multiplexer includes at least one reconfigurable add-drop unit that can add-drop one channel out of a large set by switching the light path through one of a set of fixed add-drop filters. Reconfiguration is done by switching from the add-drop filter path to a bypass path, changing to a different add-drop filter and then switching back. The phase delay of the bypass path is adjusted to maintain nearly maximum transmission during switching. The selection among add-drop filters is done by sliding an integrated optic chip with the set of add-drop filters between input and output waveguides. The reconfigurable add-drop multiplexer unit is latchable, passive between reconfigurations, and has low intrinsic insertion loss. Plural units in series can add/drop plural channels.
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Henry Charles Howard
Lenz Gadi
Li Yuan P.
Madsen Christi Kay
Presby Herman Melvin
Lee John D.
Stahl Michael J.
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