A multihop multi-OPS optical interconnection network

In this paper, we study the design of regular multicast networks implemente d with Optical Passive Star (OPS) couplers. We focus on an architecture bas ed on both Kautz graphs and stack-graphs, and show that it is very cost-eff ective with respect to its resources requirements, namely the number of OPS couplers, power budget, scalability and number of transceivers, and presen ts a large ratio number-of-nodes/diameter. The important issue of medium ac cess control is also addressed and control protocols for accessing the opti cal couplers are given and analyzed. Finally, we show through simulation th at these control protocols efficiently implement shortest path routing on t hese networks.