ALL-OPTICAL NETWORK DESIGN WITH EVEN AND ODD NODES

Pritam Keshari Sahoo, Madhuli Madhusmita Das

Abstract: We have studied the effects of OLTs and OADMs in WDM optical networks. All optical networks have proved to be cost efficient and power saving in comparison to O-E-O networks. Cost of a network can further be reduced by minimizing the number of IP router ports and the number of wavelengths required. It has been already studied the number of IP router ports required per node and number of wavelengths required to carry a fixed amount of traffic, considering the network containing even and odd number of routing nodes. And finally the result has been compared with other architectures like point to point WDM and hub networks, finally all-optical networks proved to be most cost efficient in saving number of wavelength requirements and IP router port requirements. In this paper we have compared all-optical network with itself, by taking even and odd number of nodes. That is we have compared all-optical network containing even number of nodes with the same all-optical network containing odd number of nodes. The result what we obtained is to honor same amount of traffic “t”, all-optical network containing odd number of nodes require lesser number of wavelengths than its previous even number of nodes. We have here varied the number of nodes keeping the amount of traffic fixed assuming static routing for simplicity of our work. Finally we observed the percentage of change in wavelength requirements decreases on increasing number of nodes. That is for a large network number of wavelength requirements are large for even number of nodes than odd number of nodes. But this difference is little more for a small network size.

Keywords: Wavelength Division Multiplexing (WDM), PPWDM (Point to point WDM), Light paths, traffic, alloptical, Erlang(E)

DOI: https://doi.org/10.15623/ijret.2015.0407048