A Performance Comparison of Centralized and Distributed Spectrum Management Techniques in Elastic Optical Networks

Figure 3

Slots in a Flexi-grid network: (a) slots in flexi-grid frequency spectrum have a nominal center frequency granularity of 6.25 GHz, with the slot width of 12.5 GHz; (b) connections 1, 2 and 3 with even number of slots around a center frequency and a guard band between connections 1 and 2.