title: Out-of-plane scattering from vertically asymmetric photonic crystal slab waveguides with in-plane disorder.
abstract: We characterize optical wave propagation along line defects in two-dimensional arrays of air-holes in free-standing silicon slabs. The fabricated waveguides contain random variations in orientation of the photonic lattice elements which perturb the in-plane translational symmetry. The vertical slab symmetry is also broken by a tilt of the etched sidewalls. We discuss how these lattice imperfections affect out-of-plane scattering losses and introduce a mechanism for high-Q cavity excitation related to polarization mixing.
authors: Rowland Institute at Harvard, Harvard University, Cambridge, MA 02142, USA. jtopolan@ece.neu.edu
authors: Juraj
authors: J
authors: Topolancik
authors: Frank
authors: F
authors: Vollmer
authors: Rob
authors: R
authors: Ilic
authors: Michael
authors: M
authors: Crescimanno