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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 packet-switched 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)
Keywords: Optical packet switching Wavelength conversion Shared-per-wavelength optical architecture Markov chains Fixed-point analysis a b s t r a c t This paper compares four different architectures for sharing wavelength converters in asynchronous optical packet switches with variable-length packets. The first two architec-tures are the well-known(More)
Dendrometric parameters such as tree DBH, height, crown diameter and size characteristics of leaves and fruit production collected from Vitellaria paradoxa subsp. growing in three land use types in Pendjari Biosphere Reserve (PBR) were analyzed. A total of 36 circular plots of 15 m diameter were randomly set in the three main land use sites of the PBR.(More)
Recently a new hybrid optical network, integrating circuit and packet transport services has been proposed. This network, called 3-Level Integrated Hybrid Optical Network (3-LIHON), provides different transport services for guaranteed, real-time, and best-effort traffic. This article proposes a protection mechanism for the real-time traffic in the 3-LIHON(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)
— 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(More)
This paper describes recent research activities and results in the area of photonic switching carried out within the Virtual Department on Switching (VDS) of the European e-Photon/ ONe Network of Excellence. Contributions from outstanding European research groups in this field are collected to offer a platform for future research in optical switching. The(More)