LOW TRANSIT LOSS ADD-DROP MULTIPLEXING NODE FOR ALL OPTICAL NETWORKING
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Dec 29, 2015
filing date -
Dec 29, 2015
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Methods and apparatus for add-drop multiplexing in all optical networking are provided. A tunable optical filter is controlled to drop a first portion of an incoming optical signal in a first wavelength band and pass a second portion of the incoming optical signal in a second wavelength band. The dropped first portion is distributed among local drop optical output ports with a demultiplexer. A multiplexer combines local add optical input signals in a third wavelength band into an add optical input signal and the tunable optical filter is controlled to add the add optical input signal to the passed second portion of the incoming optical signal. The tunable optical filter is configured to lower an optical loss for the passed second portion of the incoming optical signal at the account of a corresponding increase of an optical loss in the dropped first portion and/or the add optical input signal.
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Patent Citation Ranking
- 4 Citation Count
- H04Q Class
- 11.06 % this patent is cited more than
- 8 Age