title: Grating-assisted coupling of optical fibers and photonic crystal waveguides.
abstract: We propose and analyze a highly efficient method of coupling light from optical fibers to two-dimensional photonic crystal waveguides. Efficient coupling is achieved by positioning of a tapered fiber parallel to the linear defect, where the photonic crystal's cladding functions as a grating coupler and provides field confinement as well. Numerical simulations indicate that better than 90% transmission is possible with a full width at half-magnitude bandwidth of 12nm. It is shown that one can increase the bandwidth by increasing the field overlap between the two waveguides.
authors.forename: Wan
authors.initials: W
authors.lastname: Kuang
authors.forename: Cheolwoo
authors.initials: C
authors.lastname: Kim
authors.forename: Andrew
authors.initials: A
authors.lastname: Stapleton
authors.forename: John D
authors.initials: JD
authors.lastname: O'Brien