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Intelligent Supervision of Flexible Optical Networks

The presentation will be in French (Slides in English).

In order to get authorization to enter the building of IRT b<>com, please register online via this link:


Dynamic and flexible optical networks are among the evolution scenarios of optical transport networks. These form the basis of the new generation of optical networks of tomorrow and enable the effective deployment of services such as cloud computing. This evolution is intended to provide flexibility and automation to the optical layer. However, it results in additional complexity, particularly in terms of management and control of this new network generation.

Until recently, the standardized routing and signaling protocols have been taking into account several optical parameters like spectral bandwidth information, modulation format, and optical regeneration. However, other parameters (e.g., link optical powers, gain of optical amplifiers) are still required in order to efficiently operate large optical networks. In this context, there is a need to study existing optical networks and the different integration methods of the photonic layer in a control plane. The goal is to get an automatic optical network that is flexible, programmable, and at the same time efficient from an economical and operational perspective.

The use of flexible grid technology has an impact on existing optical networks, where almost all the equipment must be replaced, resulting in an additional cost to network operators. In this thesis, we study the current optical networks and evaluate the impact of flexibility on the existing infrastructures. Then, we identify several physical parameters to be controlled and propose protocol extensions in order to integrate these parameters in the GMPLS control plane. In addition, we develop routing and signaling algorithms that allow the implementation of an efficient control plane that addresses the need for flexibility. Finally, the set of our proposals and solutions are evaluated on multiple network topologies with different traffic patterns in order to validate their relevance.

You are also invited to the buffet that will follow the presentation.


Matthieu KANJ (AdopNet)
Tuesday, 20. December 2016 - 14:00 to 18:00
B<>Com, 1219 Avenue Champs Blancs, 35510 CESSON-SÉVIGNÉ, 1st floor, Room Hypermedia.
Defense Type: 
Composition of jury: 
  • David Coudert               Reviewer             Research director at INRIA Sophia Antipolis
  • Cédric Ware                   Reviewer             University professor at Telecom ParisTech
  • Ramon Casellas            Examiner             Research engineer at CTTC Barcelone
  • Jean Marie Bonnin        Examiner             University professor at Telecom Bretagne
  • Esther Le Rouzic           Supervisor           Research engineer at Orange Labs Lannion
  • Bernard Cousin             PhD Director      University professor at University of Rennes 1
  • Dominique Verchère    Invitee                 Research engineer at Nokia Bell Labs Paris
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