State aggregation-based model of asynchronous multi-fiber optical switching with shared wavelength converters
Author
Akar, N.
Raffaelli, C.
Savi, M.
Date
2013Source Title
Optical Switching and Networking
Print ISSN
1573-4277
Publisher
Elsevier
Volume
10
Issue
3
Pages
173 - 185
Language
English
Type
ArticleItem Usage Stats
115
views
views
88
downloads
downloads
Abstract
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.
Keywords
Markov chainsOptical packet switching
State aggregation
Wavelength converters
Actual system
Fixed-point iterations
Input traffic
Multi fibers
Optical gates
Optical packet switching
Optical switching
Particular condition
Performance Model
Shared wavelength converters
State aggregation
Wavelength converter
Analytical models
Computer simulation
Gates (transistor)
Markov processes
Models
Optical switches
Fibers
Permalink
http://hdl.handle.net/11693/21041Published Version (Please cite this version)
http://dx.doi.org/10.1016/j.osn.2012.12.001Collections
Related items
Showing items related by title, author, creator and subject.
-
Dimensioning shared-per-node recirculating fiber delay line buffers in an optical packet switch
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 ... -
Optical core networks research in the e-Photon-ONe+ project
Callegati F.; Cugini F.; Ghobril P.; Gunreben, S.; López V.; Martini, B.; Pavón-Mariño P.; Perényi, M.; Sengezer, N.; Staessens, D.; Szigeti J.; Tornatore, M. (2009)This paper reports a summary of the joint research activities on Optical Core Networks within the e-Photon-ONe+ project. It provides a reasonable overview of the topics considered of interest by the European research ...