All-optical switching using nonlinear subwavelength Mach-Zehnder on silicon Journal Articles uri icon

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  • We report on the experimental demonstration of ultrafast all-optical switching and wavelength down-conversion based on a novel nonlinear Mach-Zehnder interferometer with subwavelength grating and wire waveguides. Unlike other periodic waveguides such as line-defects in a 2D photonic crystal lattice, a subwavelength grating waveguide confines the light as a conventional index-guided structure and does not exhibit optically resonant behaviour. Since the device had no dedicated port to input optical signal to control switching a new approach was also implemented for all-optical switching control.


  • Glesk, Ivan
  • Bock, Przemek J
  • Cheben, Pavel
  • Schmid, Jens H
  • Lapointe, Jean
  • Janz, Siegfried

publication date

  • July 18, 2011