Wavelength assignment in an optical WDM network
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United States of America Patent
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Sep 3, 2013
Grant Date -
Oct 4, 2012
app pub date -
Jun 8, 2012
filing date -
Jul 19, 2001
priority date (Note) -
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status (Latency Note)
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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.
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