Author :
Iannone, Eugenio ; Sabella, Roberto ; Binetti, Stefano
Abstract :
Granularity is a key issue in the design of an optical layer of a transport network. In fact, the choices of the number of wavelength division multiplexing channels and of the bit rate of each channel have a significant impact on the design of the network nodes and influence both the network management and the transmission performance. As a matter of fact, the selection of the channel bit rate that allows the best tradeoff to be reached is a complex task. In this paper, we analyze, for three different routing strategies (according to the fact that wavelength conversion is achieved in any node for all the channels, or just partially for some channels, or even not at all, respectively), the impact of transmission performance taking into consideration two technologies that allow wavelength conversion to be accomplished, and considering three relevant transmission hierarchies: 622 Mb/s, 2.5 Gb/s, and 10 Gb/s. The analysis highlights that the transmission performance has to be investigated to find the best choices
Keywords :
optical fibre networks; optical frequency conversion; telecommunication channels; telecommunication network routing; wavelength division multiplexing; 10 Gbit/s; 2.5 Gbit/s; 622 Mbit/s; all-optical WDM network granuality; network management; network nodes; optical layer; routing strategies; transmission hierarchies; transmission performance; transport network; wavelength conversion; wavelength division multiplexing channels; Bit rate; Fiber nonlinear optics; High speed optical techniques; Intelligent networks; Optical crosstalk; Optical fiber networks; Optical wavelength conversion; Performance analysis; WDM networks; Wavelength division multiplexing;
