Integrated nonlinear Mach Zehnder for 40 Gbit/s all-optical switching

Cosimo Lacava, Michael Strain, Paolo Minzioni, Ilaria Cristiani, Marc Sorel

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)
174 Downloads (Pure)


We report on the experimental demonstration of a novel silicon based fully integrated nonlinear Mach Zehnder device. A standard silicon waveguide is used as a nonlinear arm, conversely a large mode SU-8 waveguide acts as a purely linear arm. Given this asymmetry, an intensity dependent phase shift can be introduced between the two interferometric arms. Thanks to a fine tuning of the silicon arm optical properties, a low power, ultrafast, picosecond operation is demonstrated, allowing the use of this device for ultrafast all-optical signal processing in high density communication networks.
Original languageEnglish
Pages (from-to)21587-21595
Number of pages9
JournalOptics Express
Issue number18
Publication statusPublished - 6 Sept 2013


  • photonics
  • Mach Zehnder
  • optical switching


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