Systems and methods for channel additions over multiple cascaded optical nodes
First Claim
1. A method implemented by a power controller associated with a node in an optical network with one or more sections, the method comprising:
- responsive to adding a channel at the node, wherein the channel is added at an upstream node, performing a power control loop at the node based solely on power measurements determined at the node, wherein the performing is independent of and does not coordinate with any other power control loops performed for the channel at one or more additional nodes comprising the upstream node; and
adjusting power of the channel at the node based on the power control loop.
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Abstract
A method, an optical node, and an optical network include a power controller configured to bring channels in-service in parallel over multiple cascaded optical nodes quickly, efficiently, and in a non-service affecting manner. The method, node, and network utilize multiple states of a control loop that maintains a stable response in downstream optical nodes as channels are added in parallel. Further, the power controller is configured to operate independently alleviating dependencies on other power controllers and removing the need for coordination between power controllers. The method, node, and network provide efficient turn up of dense wave division multiplexing (DWDM) services which is critical to optical layer functionality including optical layer restoration.
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Citations
20 Claims
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1. A method implemented by a power controller associated with a node in an optical network with one or more sections, the method comprising:
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responsive to adding a channel at the node, wherein the channel is added at an upstream node, performing a power control loop at the node based solely on power measurements determined at the node, wherein the performing is independent of and does not coordinate with any other power control loops performed for the channel at one or more additional nodes comprising the upstream node; and adjusting power of the channel at the node based on the power control loop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power controller associated with a node in an optical network with one or more sections, the power controller comprising:
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circuitry adapted to, responsive to adding a channel at the node, wherein the channel is added at an upstream node, perform a power control loop at the node based solely on power measurements determined at the node, wherein the power control loop is performed independent of and does not coordinate with any other power control loops performed for the channel at one or more additional nodes comprising the upstream node; and circuitry adapted to cause adjustment of power of the channel at the node based on the power control loop. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An optical node, comprising:
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one or more degrees comprising components configured to selectively alter power of a channel being added to the one or more degrees; an optical power monitor adapted to measure an output power of the channel; and a power controller communicatively coupled to the at least one degree and the optical power monitor, wherein the power controller is configured to responsive to adding a channel at the node, wherein the channel is added at an upstream node, perform a power control loop at the node based solely on power measurements determined by the optical power monitor, wherein the power control loop is performed independent of and does not coordinate with any other power control loops performed for the channel at one or more additional nodes comprising the upstream node, and cause adjustment of power of the channel by the components based on the power control loop. - View Dependent Claims (20)
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Specification