Spectrum controller systems and methods in optical networks
First Claim
1. A spectrum control method for minimizing power spectral density (PSD) offsets by adjusting gain of optical amplifiers in an optical section, wherein the optical section comprises a logical boundary from one optical signal access point to a next adjacent optical signal access point, the method comprising:
- estimating PSD offset from a given target for a peak channel at each span in the optical section, wherein the estimated PSD offset is divided at each span into two components comprising a self-introduced offset and an uncompensated offset from upstream;
generating, for each span, a separate controller response for the self-introduced offset and the uncompensated offset from upstream; and
controlling the gain of the optical amplifiers based on the separate controller response for the self-introduced offset and the uncompensated offset from upstream, for each span.
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Accused Products
Abstract
Spectrum control systems and methods are implemented to minimize power spectral density (PSD) offsets by adjusting gain of optical amplifiers in an optical section. The optical section is a logical boundary from one optical signal access point to a next adjacent optical signal access point. The systems and methods include estimating PSD offset from a given target for a peak channel at each span in the optical section, wherein the estimated PSD offset is divided at each span into two components including a self-introduced offset and an uncompensated offset from upstream; generating, for each span, a separate controller response for the self-introduced offset and the uncompensated offset from upstream; and controlling the gain of the optical amplifiers based on the separate controller response for the self-introduced offset and the uncompensated offset from upstream, for each span.
52 Citations
20 Claims
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1. A spectrum control method for minimizing power spectral density (PSD) offsets by adjusting gain of optical amplifiers in an optical section, wherein the optical section comprises a logical boundary from one optical signal access point to a next adjacent optical signal access point, the method comprising:
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estimating PSD offset from a given target for a peak channel at each span in the optical section, wherein the estimated PSD offset is divided at each span into two components comprising a self-introduced offset and an uncompensated offset from upstream; generating, for each span, a separate controller response for the self-introduced offset and the uncompensated offset from upstream; and controlling the gain of the optical amplifiers based on the separate controller response for the self-introduced offset and the uncompensated offset from upstream, for each span. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A controller configured to minimize power spectral density (PSD) offsets through gain adjustments in optical amplifiers in an optical section, wherein the optical section comprises a logical boundary from one optical signal access point to a next adjacent optical signal access point, the controller comprising:
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an interface communicatively coupled to elements in the optical section, the interface configured to receive measurements from the elements; a processor communicatively coupled to the interface; and memory storing instructions that, when executed, cause the processor to estimate PSD offset from a given target for a peak channel at each span in the optical section based on the measurements, wherein the estimated PSD offset is divided at each span into two components comprising a self-introduced offset and an uncompensated offset from upstream, generate, for each span, a separate controller response for the self-introduced offset and the uncompensated offset from upstream, and control the gain of the optical amplifiers based on the separate controller response for the self-introduced offset and the uncompensated offset from upstream, for each span. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An optical network, comprising:
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N optical sections each comprising a logical boundary from one optical signal access point to a next adjacent optical signal access point, N is an integer greater than 1; one or more optical amplifiers in each of the N optical sections; and N sectional controllers configured to minimize power spectral density (PSD) offsets based on controlling gain of the one or more optical amplifiers in an associated optical section; wherein the N sectional controllers are configured to minimize the PSD offsets without peer-to-peer messaging between one another based on all PSD offsets at a first monitoring point in the associated optical section treated as upstream PSD offsets, and an associated response to the upstream PSD offsets is dampened to allow upstream sectional controllers an opportunity to control.
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Specification