Marcelo Eduardo Vieira Segatto

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323 Abstract— A novel method is presented to design the configuration of pumping lasers of Raman amplifiers using a multi-objective particle swarm optimizer. The goal is to obtain the pump laser wavelengths and powers that maximize the amplifier on-off gain, while maintaining the flatness of the gain over the used bandwidth. We used an algorithm called(More)
The information systems that support Electronic Commerce on the Internet are becoming more common and complex. The complexity of these systems increases the need for new models with different degrees of abstraction in order to simplify the visualization of different aspects of the structure, constraints and operation of the software. In this paper we(More)
Les textes publiés dans la série des rapports de recherche HEC n'engagent que la responsabilité de leurs auteurs. La publication de ces rapports de recherche bénéficie d'une subvention du Fonds de recherche du Québec – Nature et technologies. Abstract This paper presents a decomposition approach for solving a variant of the Routing and Wavelength Assignment(More)
This paper proposes a new design methodology for discrete multi-pumped Raman amplifier. In a multi-objective optimization scenario, in a first step the whole solution-space is inspected by a CW analytical formulation. Then, the most promising solutions are fully investigated by a rigorous numerical treatment and the Raman amplification performance is thus(More)
— In this paper, we propose a hybrid methodology based on Graph-Coloring and Genetic Algorithm (GA) to solve the Wavelength Assignment (WA) problem in optical networks, impaired by physical layer effects. Our proposal was developed for a static scenario where the physical topology and traffic matrix are known a priori. First, we used fixed shortest-path(More)