We studied WDM lightwave networks with tunable transceivers including design for lightwave networks with limited tuning ranges for transceivers. Transmission schedules and virtual topology embeddings are needed to support high performance distributed computing. How to design the transmission schedule depends on how the virtual topology is embedded in the physical lightwave network. We developed general graph theoretic results and algorithms and using these built optimal embeddings and optimal transmission schedules for de Bruijn graphs and undirected de Bruijn graphs, assuming certain conditions on e network parameters. We proved our transmission schedules are optimal over all possible embeddings.
Reliability is important for such a scaled-up network.
We analyzed the fault tolerant routing properties of POPS networks. We demonstrated some worse cases due to link errors and the lower bound for connectiviity is obtained. Some sufficient approaches were proposed to detect and keep connectivity of the whole system. The current technology only allows the transceivers to be tunable in a small range, a fact ignored in previous studies. We focused on the design of WDM optical passive star networks with tunable transmitters of limited tuning range and fixed wavelength receivers.