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US 2003/0156317 A1Published application
Communications network architecture
OwnerFrank Friedrich Ruhl, Trevor Bruce Andersoninventors
Life of this patent
Estimating the term…
Abstract
A communications network (2) including a number of optical fibre loops (8) having respective access nodes (10), an optical wavelength group for traffic within the loop, and at least one other optical wavelength group for traffic to the another loop. The network (2) has an optical cross-connect (4) for routing traffic between the loops by selecting the wavelength groups. The optical cross-connect (4) is passive, and the network (2) may be a metropolitan area network with traffic being carried by WDM signals.
Claims21
A communications network, including:
- a plurality of optical fibre loops each having respective access nodes included in the loops, an optical wavelength group for traffic within the loop, and at least one other optical wavelength group for traffic to at least one other loop;
- and
- an optical cross-connect for routing traffic between the loops by selecting said wavelength groups.
Dependencies are inferred from the claim text.