Efficient light coupling from integrated single-mode waveguides to supercollimating photonic crystals on silicon-on-insulator platforms Auteur(s): Vynck Kevin, Centeno Emmanuel, Le vassor d'yerville Marine, Cassagne D. (Article) Publié: Applied Physics Letters, vol. 92 p.103128 (2008) Texte intégral en Openaccess : Ref HAL: hal-00437946_v1 DOI: 10.1063/1.2898221 WoS: 000253989300128 Exporter : BibTex | endNote 4 Citations Résumé: We propose a practical and efficient solution for the coupling of light from integrated single-mode waveguides to supercollimating planar photonic crystals (PhCs) on conventional silicon-on-insulator platforms. The device consists of a rib waveguide, designed to sustain spatially extended single modes and matched to a supercollimating PhC, which has been truncated at its boundary to improve impedance matching between the two photonic components. Three-dimensional simulations show transmission efficiencies up to 96% and reflections below 0.2% at wavelengths close to 1.55 mu m. This approach constitutes a significant step toward the integration of supercollimating structures on photonic chips. (c) 2008 American Institute of Physics. |