January 01, 2014

High performance monolithically integrated SOA-UTC photoreceiver for 100Gbit/s applications

  • Achouche M.
  • Anagnosti M.
  • Caillaud C.
  • Glastre G.
  • Lanteri D.
  • Paret J.

In this paper we present a high-speed photo-detector comprising a uni-traveling carrier photo-diode (UTC PD) monolithically integrated with a semiconductor optical amplifier (SOA) for 100Gbit/s applications. This new pre-amplified photoreceiver design operates at 1.55μm wavelength with the UTC PD exceeding 110GHz 3dB bandwidth at high input powers and a dark current of 1 nA. A 40% bandwidth improvement is achieved by employing new optimized transmission lines (TMLs) to equalize the intrinsic response of the detector. The high performance buried heterostructure SOA exhibits low polarization dependence loss (<;1dB) low noise figure (~8dB) and 19dB gain allowing to achieve a responsivity of >50AIW. The bias dependence of the gain and the carrier recombination was analyzed using differential carrier lifetime measurements.

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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 ...