Michele Savi

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This paper describes a multistage switch based on the broadcast-and-select principle. It implements shared per node wavelength conversion for contention resolution in optical packetswitched networks. A novel scheduling algorithm is proposed to control packet forwarding in synchronous context. An analytical model is provided to calculate the packet loss(More)
Future Internet packet switches and routers will have to overcome intrinsic limitations of current electronic switching fabrics, related to the extremely high amount and density of the information to be internally processed, and the consequent very large number of interconnections, and very high power consumption and dissipation. Motivated by this(More)
1389-1286/$ see front matter 2010 Elsevier B.V doi:10.1016/j.comnet.2010.03.008 q The work described in this article was carried ou the BONE-project (‘‘Building the Future Optical Ne Network of Excellence funded by the European Com 7th ICT-Framework Programme, and by the Scienti Research Council of Turkey (TUBITAK) under the P 106E046. * Corresponding(More)
This paper deals with the problem of service differentiation in an optical packet-switched backbone. A QoS-aware network function based on different routing and contention resolution strategies for different classes of service is proposed and analyzed. Contention resolution is performed by using both wavelength and time domains and QoS differentiation at(More)
The performance of a Bufferless Optical Packet Switch, which employs shared Fixed Input Tunable Output Wavelength Converters, namely shared-per-wavelength, supporting Quality of Service is presented. The aims of the paper are both to reduce switch costs, by using simpler optical components and low complexity space switching matrices, and to provide service(More)
Simulation results of the OSNR performance of an optical switch/router are presented in this paper. The paper is completed with a cascadability analysis, which takes into account the optical link that joins the nodes, and some results that show the effects of the scheduling algorithm on the optical performance.
This paper describes the scheduling algorithms to control the optical packet forwarding in a multi-stage switch based on the broadcast-and-select principle. The aim of control algorithms is to fully exploit switch resources while avoiding contention in the wavelength and space domains. A multi-stage switch based on the shared per node wavelength conversion(More)