The lack of effective contention resolution mechanisms in the optical domain presents dynamic optical switching architectures with a hard dilemma between high loss (when adopting one-way reservations) and high delay (when using two-way reservations). In this work we evaluate an alternative hierarchical network architecture, which achieves a satisfactory compromise by partitioning the network into a number of geographically limited domains operating in slot and frame synchronous mode where two-way reservations are effective. © 2009 IEEE.
Orphanoudakis, T. G., Drakos, A., Leligou, H. C., Stavdas, A., & Boucouvalas, A. C. (2009). Dynamic resource allocation with service guarantees over large scale optical networks. IEEE Communications Letters, 13(11), 859–861. https://doi.org/10.1109/LCOMM.2009.081336