Ciena Corporation

Yanping Xu

Choudhury A Al Sayeed

David Casson Bownass

Choudhury A Al Sayed

Systems and methods are provided for controlling one or more optical amplifiers of a C+L band photonic line system () of a telecommunications network in which C-band signals and L-band signals may be transmitted. In one implementation, a method () may execute a traffic managing module (). When executed, the traffic managing module () may be configured to enable a processing device () to calculate () a gain correction profile based on a difference between a saved baseline transmission profile () and a measured transmission profile () of a surviving band of a photonic line system () when another band of the photonic line system () is missing or impacted. The traffic managing module () may further be configured to enable the processing device () to apply () the gain correction profile to a respective optical amplifier () of the photonic line system () to compensate for the difference.

Handling band spectrum failures in a C+L band photonic line system

Systems and methods include, responsive to a request for capacity change of X channels, X is an integer &#x3e;1, on an optical section () and at an Optical Add/Drop Multiplexer (OADM) node () in an optical network (), dividing optical spectrum on the optical section into M slots, M is an integer &#x3e;1, such that the capacity change of X channels takes a maximum of N steps, N is an integer &#x3e;1; and performing the capacity change of X channels in up to the N steps in an interleaved manner that changes a subset of the X channels in each of the N steps. For each step, the performing can include a maximum of M/N slots of the M slots with spacing between each of the M/N slots not used for the capacity change in a corresponding step. The spacing can be f, (N+f), (2N+f), . . . , M over the optical spectrum, where f is each step, f=1, 2, . . . , N.

Bundling capacity changes in channel holder based optical links

Systems and methods are provided for controlling one or more optical amplifiers of a C+L band photonic line system of a telecommunications network in which C-band signals and L-band signals may be transmitted. In one implementation, a control device may include a processing device and a memory device configured to store a traffic managing module for controlling C-band and the L-band traffic in the photonic line system. The traffic managing module, when executed, may be configured to cause the processing device to calculate a gain correction profile based on a difference between a saved baseline transmission profile and a measured transmission profile of a surviving band of a photonic line system when another band of the photonic line system is missing or impacted. The traffic managing module is configured to apply the gain correction profile to a respective optical amplifier of the photonic line system to compensate for the difference.

Systems, methods, and non-transitory computer-readable media are provided for performing channel swapping techniques for swapping bundles of optical channels in an optical network, such as a C+L band system, based on frequency band sensitivity. In one embodiment, a method includes swapping a first group of channels or first portion of spectrum in a more-sensitive frequency band with a first set of replacement channels or first portion of replacement spectrum using a first swapping technique. The method also includes swapping a second group of channels or second portion of spectrum in a less-sensitive frequency band with a second set of replacement channels or second portion of replacement spectrum using a second swapping technique that is different from the first swapping technique. The first and second swapping techniques are based at least in part on the number of channels or portion of spectrum that can be swapped at any given time instance.

Swapping bundles of optical channels in a C+L band system based on frequency band sensitivity

Systems and methods include, responsive to a request for capacity change of X channels, X is an integer&#x3e;1, on an optical section and at an Optical Add/Drop Multiplexer (OADM) node in an optical network, dividing optical spectrum on the optical section into M slots, M is an integer&#x3e;1, such that the capacity change of X channels takes a maximum of N steps, N is an integer&#x3e;1; and performing the capacity change of X channels in up to the N steps in an interleaved manner that changes a subset of the X channels in each of the N steps. For each step, the performing can include a maximum of M/N slots of the M slots with spacing between each of the M/N slots not used for the capacity change in a corresponding step. The spacing can be f, (N+f), (2N+f), . . . , M over the optical spectrum, where f is each step, f=1, 2, . . . , N.

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Ottawa, Canada

Yanping Xu