(a) 22-node BT reference network showing MaxEnt link utilization in
the single-fiber (SF) pair scenario, where the numbers in nodes show
node identifiers and the numbers on links indicate the number of demands
being routed over each link. (b) Link usage diagram showing the
center-frequency placements of node-pair demands across all links in the
network in the SF pair scenario. See Wright et al., pp. A66-A72.