Architecture for a photonic transport network
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United States of America Patent
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Issued Date -
Dec 12, 2002
app pub date -
Jun 7, 2001
filing date -
Jun 7, 2001
priority date (Note) -
Abandoned
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Abstract
The architecture for a photonic transport network provides for separation of passthru channels form the drop channels at the input of a switching node. A wavelength switching sub-system then switches the passthru channels, without OEO conversion. The drop channels are directed to broadband receiver of choice using a broadcast and select drop tree. The add channels are inserted at the output side of the node, using tunable transponders. In addition, a passthru channel may be OEO converted if signal conditioning and/or wavelength conversion are necessary. The transponders, regenerators and transceivers are not wavelength specific, allowing flexible and scaleable network configurations. This structure provides for fast provisioning of new services and `class of service` network recovery in case of faults.
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