Method and system for multi-level power management in an optical network
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United States of America Patent
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Oct 30, 2007
Grant Date -
Jun 24, 2004
app pub date -
Aug 12, 2003
filing date -
Dec 24, 2002
priority date (Note) -
Expired
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Abstract
A method and system for multi-level power management in an optical network is provided. They include three levels of power equalization. The first level of power management equalizes the powers of channels in a band of channels. The second level of power management equalizes the average powers of bands of channels on a fiber. The third level of control equalizes the powers of bands of channels on working and protection fibers for a path in the optical network. As a result, this multi-level power management in the network provides a dynamic, automatic method for the network to adjust to changing operating conditions and configurations and to maintain relatively stable network powers. Each level of power management may be implemented jointly or independently, and operates autonomously so that, for example, one modification comprises continuous first level control and only periodic second level control.
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