High-efficiency diffraction grating coupler for multimode optical interconnect

Janyce Franc; Nathalie Destouches; Danièle Blanc; Jean-Claude Pommier; Svetlen Tonchev; Geert Van Steenberge; Nina Hendrickx; Arndt Last; Olivier Parriaux

doi:10.1117/12.666710

21 April 2006 High-efficiency diffraction grating coupler for multimode optical interconnect

Janyce Franc, Nathalie Destouches, Danièle Blanc, Jean-Claude Pommier, Svetlen Tonchev, Geert Van Steenberge, Nina Hendrickx, Arndt Last, Olivier Parriaux

Author Affiliations +

Proceedings Volume 6185, Micro-Optics, VCSELs, and Photonic Interconnects II: Fabrication, Packaging, and Integration; 61851F (2006) https://doi.org/10.1117/12.666710
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

The device presented in this paper is designed for coupling a free space optical wave under quasi-normal incidence in and out of a highly multimode waveguide with high efficiency. It uses two resonant diffraction gratings at the substrate-waveguide interface that are made of a shallow metal grating, covered with a high refractive index layer. It is shown that the resonant structure can theoretically diffract up to 90% of the incident energy in and out of the waveguiding layer. The geometrical parameters of the structure and the tolerances can easily be achieved by conventional technology means.

Citation Download Citation

Janyce Franc, Nathalie Destouches, Danièle Blanc, Jean-Claude Pommier, Svetlen Tonchev, Geert Van Steenberge, Nina Hendrickx, Arndt Last, and Olivier Parriaux "High-efficiency diffraction grating coupler for multimode optical interconnect", Proc. SPIE 6185, Micro-Optics, VCSELs, and Photonic Interconnects II: Fabrication, Packaging, and Integration, 61851F (21 April 2006); https://doi.org/10.1117/12.666710

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