September 01, 2017

Nonlinear signal multiplexing for communication beyond the Kerr nonlinearity limit

  • Aref V.
  • Buelow H.
  • Thai Le S.

Current optical fibre transmission systems rely on modulation, coding and multiplexing techniques which were originally developed for linear communication channels. However, linear transmission techniques are not fully compatible with a transmission medium with nonlinear optical response such as silica. As a consequence, the Kerr nonlinearity imposes a limit on the achievable transmission performance and capacity of conventional optical fibre communication systems. Here we show that transmission performance beyond the Kerr nonlinearity limit can be achieved by encoding all available degrees of freedom and nonlinearly multiplexing signals in the space of the so-called nonlinear spectrum, the evolution of which is linear along the fibre link. This result strongly motivates a paradigm shift and the developments of novel nonlinear coding and signal processing techniques in optical fibre transmission technology

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Recent Publications

January 01, 2019

Friendly, appealing or both? Characterising user experience in sponsored search landing pages

  • Bron M.
  • Chute M.
  • Evans H.
  • Lalmas M.
  • Redi M.
  • Silvestri F.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Many of today's websites have recognised the importance of mobile friendly pages to keep users engaged and to provide a satisfying user experience. However, next to the experience provided by the sites themselves, ...

January 01, 2019

Analyzing uber's ride-sharing economy

  • Aiello L.
  • Djuric N.
  • Grbovic M.
  • Kooti F.
  • Lerman K.
  • Radosavljevic V.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Uber is a popular ride-sharing application that matches people who need a ride (or riders) with drivers who are willing to provide it using their personal vehicles. Despite its growing popularity, there exist ...

January 01, 2019

The paradigm-shift of social spambots: Evidence, theories, and tools for the arms race

  • Cresci S.
  • Petrocchi M.
  • Pietro R.
  • Spognardi A.
  • Tesconi M.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Recent studies in social media spam and automation provide anecdotal argumentation of the rise of a new generation of spambots, so-called social spambots. Here, for the first time, we extensively study this novel ...