Global seamless network demonstrator: a comprehensive ASON/GMPLS testbed
ABSTRACT This article reports on the continuous activities of Deutsche Telekom in setting up comprehensive ASON/GMPLS network demonstrators. The goal is to enable practical evaluations and early experiences with prototype implementations related to new standards and specifications from ITU-T, IETF, and OIF. Evolving from the GSN Demonstrator toward the current GSN+ Demonstrator configuration, this field testbed comprises ASON/GMPLS-based backbone network domains, as well as key client networks such as IP, Ethernet (metro and access networks), storage area networks, and broadband video applications to exemplify the wide range of network functions enabled by these new technologies. These ASON/GMPLS demonstrator activities were embedded in the OIF World Interoperability Tests and Demonstration in 2004, and are linked with the German national (VIOLA) and pan-European (MUPBED) project activities ensuring the highest level of interoperable implementations.
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ABSTRACT: This article presents first the history of the optical fiber transport networks, from the introduction of the first high capacity systems in the 1990s to the 10 Gbit/s per channel WDM (Wavelength Division Multiplexing) systems deployed today, and the tremendous evolution of performance within this period. The effects of propagation in optical fibers and their consequences for optical system engineering, the architecture of today's optical transport networks, the choices made in France are recalled. We then have a look at the future of optical transport networks from an operator's point of view: the expected evolutions in terms of transmission system capacity and network architecture are presented. We conclude that capacity, transparency, and agility are the main drivers of the evolution of optical fiber transport systems and networks and that a lot of changes have yet to be expected in these domains during the next decade. To cite this article: M. Joindot, S. Gosselin, C. R. Physique 9 (2008).Comptes Rendus Physique 11/2008; 9(9):914-934. · 1.64 Impact Factor
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ABSTRACT: We provide a global overview of current testbed activities on optical switching networks. The considered optical switching techniques provide different switching granularities and cost-performance tradeoffs. Our survey includes many new interesting and experimentally demonstrated features that are likely to lead to standardization, commercial adoption, and revenue generation in the near term.Journal of Lightwave Technology 10/2009; 27(19):4377-4384. · 2.86 Impact Factor