Miniaturized Bragg-grating couplers for SiN-photonic crystal slabs
Journalartikel
Details zur Publikation
Autor*innen: Barth C, Wolters J, Schell A, Probst J, Schoengen M, Lö}chel B, Kowarik S, Benson O
Zeitschrift: Optics Express
Jahr der Veröffentlichung: 2015
Bandnummer: 23
Beschreibung
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
