Method and system for multi-level power management in an optical network
First Claim
1. A method for automatic multi-level power management in an optical network, comprising the steps of:
- (a) changing powers of channels in a band of channels in the optical network so as to provide that power variation between the channels in the band of channels is within a first predetermined power range around an average power selected for the band of channels;
(b) changing average powers of bands of channels on a fiber in the optical network so as to provide that variation of the average power between the bands of channels on the fiber is within a second predetermined power range around an average power selected for the fiber; and
(c) changing average powers of bands of channels on working and protection fibers for a path in the optical network so as to provide that variation of the average power between bands of channels on the working and protection fibers is within a third predetermined power range around an average power selected for the path.
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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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Citations
20 Claims
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1. A method for automatic multi-level power management in an optical network, comprising the steps of:
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(a) changing powers of channels in a band of channels in the optical network so as to provide that power variation between the channels in the band of channels is within a first predetermined power range around an average power selected for the band of channels;
(b) changing average powers of bands of channels on a fiber in the optical network so as to provide that variation of the average power between the bands of channels on the fiber is within a second predetermined power range around an average power selected for the fiber; and
(c) changing average powers of bands of channels on working and protection fibers for a path in the optical network so as to provide that variation of the average power between bands of channels on the working and protection fibers is within a third predetermined power range around an average power selected for the path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for automatic multi-level power management in an optical network, comprising:
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(a) means for changing powers of channels in a band of channels in the optical network so as to provide that power variation between the channels in the band of channels is within a first predetermined power range around an average power selected for the band of channels;
(b) means for changing average powers of bands of channels on a fiber in the optical network so as to provide that variation of the average power between the bands of channels on the fiber is within a second predetermined power range around an average power selected for the fiber; and
(c) means for changing average powers of bands of channels on working and protection fibers for a path in the optical network so as to provide that variation of the average power between bands of channels on the working and protection fibers is within a third predetermined power range around an average power selected for the path. - View Dependent Claims (19, 20)
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Specification