title: High-Efficiency Light Coupling in a Submicrometric Silicon-on-Insulator Waveguide.
abstract: Light coupling into a sub-micrometer-thick waveguide is usually done through a grating coupler. Coupling efficiency is strongly enhanced by addition of a mirror above the grating. This new kind of coupler can be designed to achieve efficiencies as great as 80%. Numerical calculations for a high-angular-spread Gaussian incident beam are compared with experimental results obtained for a standard silicon-on-insulator waveguide.
authors: R
authors: R
authors: Orobtchouk
authors: A
authors: A
authors: Layadi
authors: H
authors: H
authors: Gualous
authors: D
authors: D
authors: Pascal
authors: A
authors: A
authors: Koster
authors: S
authors: S
authors: Laval