Demetris Monoyios

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In future transparent (all-optical) WDM networks, the signal quality of transmission (QoT) will degrade due to physical layer impairments. In this paper, we propose two genetic algorithms for solving the static impairment-aware RWA (IA-RWA) problem by accounting for the impact of physical impairments in the optimization process when searching for the(More)
In transparent optical networks it is critical to consider the impact of the crosstalk effect on the routing and wavelength assignment (RWA) process, in order to limit the impact of jamming attacks on the network, as well as the increased cost arising from the need for high port isolation in optical nodes. In this paper, we propose the use of a Genetic(More)
In this paper, we propose a new scheme for on demand reservation of capacity in OBS networks, emulating one-way signaling protocols. The proposed framework relies on the combination of a two-way reservation protocol and a burst assembly scheme with a burstification delay enforced to be the round-trip-time and which incorporates a Least Mean Square filter to(More)
Ring-based WDM-PONs can employ a single dedicated wavelength channel to interconnect the Optical Network Units (ONUs) thus providing a means for inter-ONU communication and downstream wavelength sharing. In this paper, a new TDM dynamic bandwidth allocation (DBA) algorithm for inter-ONU communication is proposed, which takes into account the destination of(More)
In this paper, the routing and wavelength assignment problem in all optical networks is considered. A solution to the RWA problem is proposed through a Genetic Algorithm (GA) based approach to search for the most suitable set of paths from many possible ones. We use GAs to solve this problem by introducing a new fitness function based on the mean value of(More)
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