Exploiting OTDM technology in WDM networks

9 years 3 months ago
Exploiting OTDM technology in WDM networks
— Wavelength routed optical networks allow to design a logical topology, comprising lightpaths and routers, which is overlayed on the physical topology, comprising optical fibers and optical cross-connects, by solving a Routing and Wavelength Assignment (RWA) problem. In this paper we extend the concept of lightpath to the one of Super-Lightpath, which uses a simple bit level Time Division Multiplexing that can be directly implemented in the optical domain, to split the wavelength bandwidth among more than one traffic flow. This allows to design logical topologies with an increased number of logical links, thus reducing the average distance among nodes, i.e., the number of electro-optic and opto-electronic conversions, and the traffic congestion on logical links. At the same time, this reduces the number of wavelengths required to solve the RWA problem. Being the Super-Lightpath RWA problem computationally intractable, we propose two heuristics which show that the number of wavel...
Marco Mellia, Emilio Leonardi, Marco Feletig, Robe
Added 15 Jul 2010
Updated 15 Jul 2010
Type Conference
Year 2002
Authors Marco Mellia, Emilio Leonardi, Marco Feletig, Roberto Gaudino, Fabio Neri
Comments (0)