Traffic-grooming- and multipath-routing-enabled impairment-aware elastic optical networks
Journal article, 2016

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.

Network optimization

Elastic optical networks

Traffic grooming

Multipath routing

Resource allocation


Madushanka Nishan Dharmaweera

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

J. Zhao

University of Massachusetts Lowell

Li Yan

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Erik Agrell

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

Journal of Optical Communications and Networking

1943-0620 (ISSN) 19430639 (eISSN)

Vol. 8 2 58-70 7405169

Adaptive optical networks: Theory and algorithms for system optimization

Swedish Research Council (VR) (2012-5280), 2013-01-01 -- 2016-12-31.

Areas of Advance

Information and Communication Technology

Subject Categories


Communication Systems



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