Optical firewall
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United States of America Patent
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N/A
Issued Date -
Dec 5, 2002
app pub date -
Jun 1, 2001
filing date -
Jun 1, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An optical network node. A plurality of subscriber line connections. A WDM unit has a plurality of WDM channel connections connected to corresponding ones of the subscriber line connections and are arranged, in use, to multiplex optical signals carried on selected transmission connections of the WDM channel connections onto a trunk optical network connection. The WDM unit is arranged in a manner such that, in use, each transmission connection filters a specific wavelength associated with that transmission connection, whereby cross talk between the WDM channel connections is reduced.
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