title: All-optical switching using nonlinear subwavelength Mach-Zehnder on silicon.
abstract: 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.
authors.affiliation: Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK. ivan.glesk@eee.strath.ac.uk
authors.forename: Ivan
authors.initials: I
authors.lastname: Glesk
authors.forename: Przemek J
authors.initials: PJ
authors.lastname: Bock
authors.forename: Pavel
authors.initials: P
authors.lastname: Cheben
authors.forename: Jens H
authors.initials: JH
authors.lastname: Schmid
authors.forename: Jean
authors.initials: J
authors.lastname: Lapointe
authors.forename: Siegfried
authors.initials: S
authors.lastname: Janz