Séminaire Dr. Gunther Roelkens 23/01/2014

« Heterogeneous silicon photonic integrated circuits for spectroscopic sensing and optical communication »

Gunther Roelkens received the PhD degree in engineering (photonics) at Ghent University, Belgium in 2007. He has been a research professor at Ghent University since 2010 working in the field of silicon photonics, more specifically mid-infrared silicon photonic integrated circuits, silicon nonlinear optics and III-V semiconductor integration on silicon photonic integrated circuits. He is also assistant professor at Eindhoven University of Technology, the Netherlands. The research highlights of his group are the first fully integrated short-wave infrared spectrometer chip, record nonlinear parametric gain on a silicon chip and high efficiency multi-wavelength lasers integrated on silicon waveguide circuits. Dr. Roelkens has authored and co-authored over 100 refereed journal publications

In this talk I will review our work on silicon photonic integrated circuits and the integration of other materials on top of the silicon waveguide circuits for applications in mid-infrared spectroscopic sensing and for telecom / datacom applications. This includes the integration of III-V semiconductors, colloidal nanoparticles and non-reciprocal materials on top of silicon-based waveguide circuits. The use of integrated nonlinear optical functionalities is also discussed.