Abstract-Traffic grooming and multipath routing are two techniques that are widely adopted to increase the performance of traditional wavelength division multiplexed networks. They have been recently applied in elastic optical networks to increase spectral efficiency. In this study, we investigate the potential gains by jointly employing the two techniques in combination with a realistic physical impairment model. To allocate resources and quantify spectral efficiency gains over existing impairment-aware schemes, we present an analytical optimization formulation for small networks and a heuristic for large networks. Through numerical simulations, we demonstrate that traffic grooming and multipath routing, together, increase spectral efficiency and reduce resource consumption over existing schemes. We show that the proposed scheme offers significant performance improvements in networks with low degrees of connectivity, high traffic loads, and long links.
Dharmaweera et al. REF investigated the potential gains by jointly employing traffic grooming and multipath routing in combination with a realistic physical impairment model.
Traffic-grooming- and multipath-routing-enabled impairment-aware elastic optical networks
IEEE/OSA Journal of Optical Communications and Networking
IEEE/OSA Journal of Optical Communications and Networking
Computer Science