Title: Multicast routing and allocation of wavelengths in a WDM network with splitters and converters

Authors: Abdelhakim Dafeur; Bernard Cousin; Rezki Ziani

Addresses: LAMPA Laboratory, Mouloud Mammeri University, Tizi-Ouzou, Algeria ' IRISA, Rennes University, Rennes, France ' Department of Electronics, Mouloud Mammeri University, Tizi-Ouzou, Algeria

Abstract: This paper deals with the problem of multicast routing and the allocation of wavelengths in a WDM network with optical splitters and converters. We present an exact formulation in integer linear programming (ILP) to find a set of optical structures connecting a source to a set of destination nodes. We use a new optical structure called hierarchical. The problem of multicast routing with sparse wavelength conversion and sparse splitting using the hierarchical structure has not yet been studied. So, our main contribution consists of introducing new optical constraints of wavelength converters with the hierarchical structure. The objective is to focus on the benefits and performances of using wavelength converters in a WDM network. Simulation results show that the hierarchical structure gets better results in terms of overall link cost and the number of wavelengths in the case of WDM network sparse wavelength converters than the WDM network without converters.

Keywords: multicast routing; wavelength division multiplexing; wavelength converters; optical networks; hierarchical structure; tree structure.

DOI: 10.1504/IJIPT.2021.116265

International Journal of Internet Protocol Technology, 2021 Vol.14 No.2, pp.120 - 130

Received: 20 Jun 2019
Accepted: 02 Aug 2020
Published online: 15 Jul 2021 *

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