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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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All-optical switching using nonlinear subwavelength Mach-Zehnder on silicon

Glesk, Ivan and Bock, Przemek and Cheben, Pavel and Schmid, Jens and Lapointe, Jean and Janz, Siegfried (2011) All-optical switching using nonlinear subwavelength Mach-Zehnder on silicon. Optics Express, 19 (15). pp. 14031-14039. ISSN 1094-4087

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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.