Optimal waveband switching in optical ring networks

Authors:
Onur Turkcu;Suresh Subramaniam
Affiliations:
Department of Electrical and Computer Engineering, The George Washington University, Washington, DC;Department of Electrical and Computer Engineering, The George Washington University, Washington, DC
Venue:
INFOCOM'10 Proceedings of the 29th conference on Information communications
Year:
2010

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Abstract

Waveband switching saves port costs in optical crossconnects by grouping together a set of consecutive wavelengths and switching them as a single waveband. Previous work has focused on either uniform band sizes or non-uniform band sizes considering a single node. In this paper, we show that such solutions are inadequate when considering the entire network, and present a novel framework for optimizing the number of wavebands in a ring network for deterministic traffic. We then consider a specific type of traffic, namely, all-to-all traffic and present bounds and heuristic solutions for the problem. Our results show that the number of ports can be reduced by a large amount using waveband switching compared to wavelength switching. We also numerically evaluate the performance of our waveband design algorithms under dynamic stochastic traffic.