Miniaturized Bragg-grating couplers for SiN-photonic crystal slabs
Journal article
Publication Details
Author list: Barth C, Wolters J, Schell A, Probst J, Schoengen M, Lö}chel B, Kowarik S, Benson O
Journal: Optics Express
Publication year: 2015
Volume number: 23
Abstract
We report on an experimental and theoretical investigation of an integrated Bragg-like grating coupler for near-vertical scattering of light from photonic crystal waveguides with an ultra-small footprint of a few lattice constants only. Using frequency-resolved measurements, we find the directional properties of the scattered radiation and prove that the coupler shows a good performance over the complete photonic bandgap. The results compare well to analytical considerations regarding 1d-scattering phenomena as well as to FDTD simulations. Link
