Efficient light coupling from integrated single-mode waveguides to supercollimating photonic crystals on silicon-on-insulator platforms

K. Vynck; E. Centeno; M. Le Vassor d'Yerville; D. Cassagne

doi:10.1063/1.2898221

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arXiv · 0711.1042

Efficient light coupling from integrated single-mode waveguides to supercollimating photonic crystals on silicon-on-insulator platforms

K. Vynck·E. Centeno·M. Le Vassor d'Yerville·D. Cassagne

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Abstract

We propose a practical and efficient solution for the coupling of light from integrated single-mode waveguides to supercollimating planar photonic crystals 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 photonic crystal, 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 microns. This approach constitutes a significant step toward the integration of supercollimating structures on photonic chips.

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K. Vynck, E. Centeno, M. Le Vassor d'Yerville, D. Cassagne. 2008-01-14. Efficient light coupling from integrated single-mode waveguides to supercollimating photonic crystals on silicon-on-insulator platforms. https://doi.org/10.1063/1.2898221

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