Abstract: Systems and methods include, responsive to provisioning a media channel (52) on a degree, wherein the media channel (52) is a contiguous portion of optical spectrum supporting N channels, N is greater than 1, causing allocation of optical filter bandwidth in an optical multiplexing/demultiplexing device for M channels (56) in the media channel (50), where M is less than N; causing provisioning of the M channels (56) in the media channel (50); and causing configuration of channel holders in the media channel from a channel holder source (20) for a part of the portion of the optical spectrum unoccupied by the M channels (56).

Abstract: Systems and methods include obtaining power measurements from one or more first components in an optical node and store the power measurements at corresponding vertices in a graph that describes the optical node; obtaining calibration data from a plurality of second components in the optical node and utilize the calibration data to determine an optical gain or an optical loss through an associated arc in the graph; and determining an optical power at any point in the optical node via traversing the graph, for any of configuration and operation of the optical node. The graph includes the vertices that are points in the optical node where there is a need for optical power, the arcs that are connections through the optical node where the optical power has the optical gain or the optical loss, and optical channels and their associated optical spectrum.

Abstract: An optical network element includes an optical multiplexing/demultiplexing device forming a degree; a channel holder source connected to the optical multiplexing/demultiplexing device; and a controller configured to, responsive to provisioning a media channel on the degree, wherein the media channel is a contiguous portion of optical spectrum supporting N channels, N>1, cause allocation of optical filter bandwidth in the optical multiplexing/demultiplexing device for M channels in the media channel, M<N, cause provisioning of the M channels in the media channel, and cause configuration of N?M channel holders in the media channel from the channel holder source.

Abstract: A network topology data record provides a information upon the basis of which a network topology can automatically be generated. A topology resolution record can include network element or shelf/path data, as well as relationship data including a network element grouping identifier, such as a site identifier. The record can also include affiliation data, such as line adjacency, associated shelf adjacency, photonic adjacency, and service layer device adjacency. A network topology is generated, without user input, based on the automatically discovered network topology information. Topology resolution data is stored at the network level, without need for interaction with a management layer. The data record also enables a graphical user interface for network management in which a user can switch and zoom between a plurality of views in a context-sensitive manner, each view showing relationship or interconnection information for the network elements.