O'COMEX : Optical Communications in Comex

Axe : comEx
Coordinateurs : Philippe Ciblat
Financement Labex : 2017
Productions Scientifiques

Présentation : Ce GT se situe dans la tâche "Communications Optiques" de l'axe Comex du Labex. La thématique de ce GT est de se préoccuper des problématiques réseaux optiques fibrées courte et longue distance. Depuis l'avènement de l'utilisation de techniques de transmission cohérentes dans les fibres il y a dix, la recherche n'a cessé de se développer dans ce domaine et il reste maintenant clairement 3 directions importantes :
  • le traitement des effets non-linéaires
  • le traitement multi-voies (fibres multi-cœurs et fibres multi-modes)
  • l'optimisation des réseaux optiques notamment sa consommation énergétique.

Équipes concernées :
  • L2S : Sheng Yang, Antoine Berthet, Zeno Toffano
  • LTCI : Philippe Ciblat, Ghaya Rekaya, Mansoor Yousefi, Yves Jaouën, Mengdi Song, Cédric Ware
  • DAVID : Dominique Barth
  • SAMOVAR : Yann Frignac, Catherine Lepers, Mounia Lourdiane

  • Post doc PERFRESO - Performances des Réseaux multidébits intégrant de nouvelles fonctionnalités optiques
  • Associated Internship project : - OKAPIS - Optical Killer-Applications : Physical Impairments Study
The future of Internet depends on meeting ever-increasing capacity needs while curbing the energy consumption’s uncontrolled growth in data networks and reducing the end-to-end latency of mobile networks. Optical functionalities (OFs), such as wavelength conversion, all-optical regeneration and optical packet switching, have a tremendous potential to solve these challenges by reducing the required number of optical-to-electronic (O-E) conversions and leveraging the lower energy cost per bit of optical transmissions. Unfortunately, such OFs that ought to be “killer applications” have never gained any significant market share, because they don’t easily fit the conventional layered network model. Our team is currently working on new ways to handle OFs, moving towards making smarter networks aware of these OFs’ advantages and drawbacks, leveraging the concepts currently being pushed by software-defined networking. A prerequisite to this is a reliable assessment of the physical impairments incurred by these functionalities and their consequences at a system level (bit error rate, spectral broadening...) We have developed a synthetic model of physical impairments of optical networks, which we integrated into a network simulator that lets us evaluate the possible benefits of OFs such as wavelength conversion.

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