Wavelength assignment in an optical WDM network

Details Wavelength assignment in an optical WDM network Wavelength assignment in an optical WDM network

2011-04-19

2011-04-19

Phan, Hanh (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S033000, C398S038000, C398S025000, C398S026000, C398S027000

Reexamination Certificate

active

07929861

ABSTRACT:
The path selection and wavelength assignment to a selected path are performed by mapping the wavelength reach to the demand distribution (agile reach) resulting in a 50-60% increase in the network reach. The network reach is further increased (about 2.2 times) when on-line measured performance data are used for path selection and wavelength assignment. The connections may be engineered/upgraded individually, by optimizing the parameters of the entire path or of a regenerator section of the respective path. The upgrades include changing the wavelength, adjusting the parameters of the regenerator section, controlling the launch powers, mapping a certain transmitter and/or receiver to the respective wavelength, selecting the wavelengths on a certain link so as to reduce cross-talk, increasing wavelength spacing, etc.

REFERENCES:
patent: 7095956 (2006-08-01), Levandovsky et al.
patent: 2003/0099014 (2003-05-01), Egner et al.
Kim et al, “Regenerator placement algorithms for connection establishment in all-optical networks”,IEE Proc-Commun. 148(1), Feb. 2001.
Ramaswami et al, “Design of logical topologies for wavelength-routed optical networks”, IEEE Journal of Selected Areas in Communications 14 (5), Jun. 1996.
Zhang et al, “A heuristic wavelength assignment algorithm for multihop WDM networks with wavelength routing and wavelength re-use”, IEEE/ACM Transactions on Networking 3 (3), Jun. 1995.
Mokhtar et al, “Adaptive Techniques for Routing and Wavelength Assignment in all-optical WANs”, IEEE 1997.
Jukan et al, “Service-specific resource allocation in WDM networks with quality constraints”, IEEE Journal of Selected Areas in Communications 18 (10), Oct. 2000.

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