title: Miniaturized Bragg-grating couplers for SiN-photonic crystal slabs.
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.
authors.forename: Carlo
authors.initials: C
authors.lastname: Barth
authors.forename: Janik
authors.initials: J
authors.lastname: Wolters
authors.forename: Andreas W
authors.initials: AW
authors.lastname: Schell
authors.forename: Jürgen
authors.initials: J
authors.lastname: Probst
authors.forename: Max
authors.initials: M
authors.lastname: Schoengen
authors.forename: Bernd
authors.initials: B
authors.lastname: Löchel
authors.forename: Stefan
authors.initials: S
authors.lastname: Kowarik
authors.forename: Oliver
authors.initials: O
authors.lastname: Benson