State aggregation-based model of asynchronous multi-fiber optical switching with shared wavelength converters
Optical Switching and Networking
173 - 185
Item Usage Stats
MetadataShow full item record
This paper proposes new analytical models to study optical packet switching architectures with multi-fiber interfaces and shared wavelength converters. The multi-fiber extension of the recently proposed Shared-Per-Input-Wavelength (SPIW) scheme is compared against the multi-fiber Shared-Per-Node (SPN) scheme in terms of cost and performance for asynchronous traffic. In addition to using Markov chains and fixed-point iterations for modeling the mono-fiber case, a novel state aggregation technique is proposed to evaluate the packet loss in asynchronous multi-fiber scenario. The accuracy of the performance models is validated by comparison with simulations in a wide variety of scenarios with both balanced and imbalanced input traffic. The proposed analytical models are shown to remarkably capture the actual system behavior in all scenarios we tested. The adoption of multi-fiber interfaces is shown to achieve remarkable savings in the number of wavelength converters employed and their range. In addition, the SPIW solution allows to save, in particular conditions, a significant number of optical gates compared to the SPN solution. Indeed, SPIW allows, if properly dimensioned, potential complexity and cost reduction compared to SPN, while providing similar performance.
Optical packet switching
Optical packet switching
Shared wavelength converters
Published Version (Please cite this version)http://dx.doi.org/10.1016/j.osn.2012.12.001
Showing items related by title, author, creator and subject.
Packet loss analysis of synchronous buffer-less optical switch with shared limited range wavelength converters Raffaelli, C.; Savi, M.; Akar, N.; Karasan, E. (2007)Application of synchronous optical switches in Optical Packet/Burst switched networks is considered. The shared per node architectural concept, where wavelength converters are shared among all input and output channels, ...
Akar, N.; Gunalay, Y. (Elsevier, 2013)Optical buffering based on fiber delay lines (FDLs) has been proposed as a means for contention resolution in an optical packet switch. In this article, we propose a queuing model for feedback-type shared-per-node recirculating ...
Comparative analysis of power consumption in asynchronous wavelength modular optical switching fabrics Akar, N.; Eramo, V.; Raffaelli, C. (Elsevier, 2011-04-02)Next-generation optical routers will be designed to support the flexibility required by Future Internet services and, at the same time, to overcome the power consumption bottleneck which appears to limit throughput scalability ...