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Proceedings Paper

Silicon germanium on graded buffer as a new platform for optical interconnects on silicon
Author(s): Vladyslav Vakarin; Papichaya Chaisakul; Jacopo Frigerio; Andrea Ballabio; Xavier Le Roux; Jean Rene Coudevylle; Laurent Vivien; Giovanni Isella; Delphine Marris-Morini
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Paper Abstract

We experimentally and theoretically investigate the use of silicon germanium (SiGe) on silicon substrate as a new platform for optical interconnects. The system composed of Germanium (Ge) rich Si1-xGex guiding layer on a graded SiGe layer is showed to be suitable for the realization of all main building blocks of passive optical circuitry. We show experimentally at a wavelength of 1550nm that sharp 12μm radius bends can be obtained by light confinement tuning. Mach-Zehnder interferometer with more than 10 dB extinction ratio is also demonstrated. Moreover, Ge-rich Si1-xGex based passive components are very interesting for their native integration with Ge-rich active optical devices. Hence, by using this new platform for optical integrated circuits, lattice mismatch between silicon and germanium is no longer a major constraint for the integration of Ge-rich active photonic components on silicon.

Paper Details

Date Published: 15 March 2016
PDF: 8 pages
Proc. SPIE 9753, Optical Interconnects XVI, 975309 (15 March 2016); doi: 10.1117/12.2208661
Show Author Affiliations
Vladyslav Vakarin, Institut d'Électronique Fondamentale, Univ. Paris Sud, CNRS (France)
Papichaya Chaisakul, Institut d'Électronique Fondamentale, Univ. Paris Sud, CNRS (France)
The Univ. of Tokyo (Japan)
Jacopo Frigerio, Politecnico di Milano (Italy)
Andrea Ballabio, Politecnico di Milano (Italy)
Xavier Le Roux, Institut d'Électronique Fondamentale, Univ. Paris Sud, CNRS (France)
Jean Rene Coudevylle, Institut d'Électronique Fondamentale, Univ. Paris Sud, CNRS (France)
Laurent Vivien, Institut d'Électronique Fondamentale, Univ. Paris Sud, CNRS (France)
Giovanni Isella, Politecnico di Milano (Italy)
Delphine Marris-Morini, Institut d'Électronique Fondamentale, Univ. Paris Sud, CNRS (France)


Published in SPIE Proceedings Vol. 9753:
Optical Interconnects XVI
Henning Schröder; Ray T. Chen, Editor(s)

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