Systems and methods for capacity changes in DWDM networks including flexible spectrum systems

摘要

A method, a controller, and an optical section include performing an analysis to determine an amount of power offset on any in-service channels in an optical section due to a capacity change with a channel; defining a step size to ensure the capacity change does not exceed an offset limit based on the analysis; performing the capacity change in one or more iterations using the step size to limit the capacity change; and performing an optimization between each of the one or more iterations to adjust amplifier gains in the optical section to compensate for offsets on the in-service channels caused by a previous iteration.

主权项

1. A method, comprising:
performing an analysis to determine an amount of power offset on any in-service channels in an optical section between two channel access points due to a capacity change with a channel in the optical section; defining a step size for the channel involved in the capacity change so that the in-service channels do not experience more than an offset limit due to the capacity change; and performing the capacity change in one or more iterations using the step size and performing an optimization after each of the one or more iterations to compensate for power offsets on the in-service channels caused by the each of the one or more iterations, wherein the optimization comprises determining and changing amplifier gain in each span.