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Proceedings Paper

GeSi photonics for telecommunication applications
Author(s): Papichaya Chaisakul; Vladyslav Vakarin; Delphine Marris-Morini; Jacopo Frigerio; Kazumi Wada; Giovanni Isella; Laurent Vivien
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Paper Abstract

We experimentally and theoretically investigate GeSi-based photonics for future on-chip optical interconnect on bulk Silicon substrates with dense wavelength division multiplexing (WDM) system. We experimentally show that Ge-rich Si1-xGex can be used as both a passive low loss waveguide and a substrate to facilitate low-temperature epitaxial growth of Ge-based active devices working at low optical loss wavelength of Ge-rich Si1-xGex waveguides. We also theoretically discussed the possibilities to realize a compact passive component based on Ge-rich Si1-xGex material system on bulk Si wafer. From simulation the system based on Ge-rich Si1-xGex waveguide and the Si1-yGey (y < x) lower cladding layer is good enough to ensure compactness of important on-chip photonic components including passive waveguide and GeSi-based array waveguide grating (AWG). The small refractive index contrast between Ge-rich Si1-xGex waveguide and the Si1-yGey lower cladding layer potentially avoid the polarization dependent loss and detrimental fabrication tolerance of WDM system. Our studies show that GeSi-based photonics could uniquely provide both passive and active functionalities for dense WDM system.

Paper Details

Date Published: 13 November 2014
PDF: 7 pages
Proc. SPIE 9277, Nanophotonics and Micro/Nano Optics II, 92770E (13 November 2014); doi: 10.1117/12.2071507
Show Author Affiliations
Papichaya Chaisakul, The Univ. of Tokyo (Japan)
Institut d'Électronique Fondamentale, CNRS, Univ. Paris-Sud (France)
Vladyslav Vakarin, Univ. Paris-Sud 11 (France)
Delphine Marris-Morini, Institut d'Électronique Fondamentale, CNRS, Univ. Paris-Sud (France)
Jacopo Frigerio, Politecnico di Milano (Italy)
Kazumi Wada, The Univ. of Tokyo (Japan)
Giovanni Isella, Politecnico di Milano (Italy)
Laurent Vivien, Institut d'Électronique Fondamentale, CNRS, Univ. Paris-Sud (France)

Published in SPIE Proceedings Vol. 9277:
Nanophotonics and Micro/Nano Optics II
Zhiping Zhou; Kazumi Wada, Editor(s)

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