A TDM Solution for All-Photonic Overlaid-Star Networks

This paper addresses various implementation issues in an all-photonic overlaid-star network, where there can be multiple fibers between an edge and a core node and multiple wavelength channels in each fiber. By revisiting the fundamental star topology, an asymmetric multiconnection network is developed to model the node connections. A network flow model and a parallel time- wavelength assignment algorithm are then presented to solve the routing, wavelength assignment and time slot assignment problems simultaneously for the Time-Division- Multiplexing (TDM) operation. This topology can reduce the computing complexity and the cost of switching and routing. We demonstrate the feasibility of such implementations by evaluating different link resources, traffic patterns and other typical factors.