title: Broadband photonic crystal waveguide 60 degrees bend obtained utilizing topology optimization.
abstract: Topology optimization has been used to design a 60 degrees bend in a single-mode planar photonic crystal waveguide. The design has been realized in a silicon-on-insulator material and we demonstrate a record-breaking 200-nm transmission bandwidth with an average bend loss of 0.43+/-0.27 dB for the TE polarization. The experimental results agree well with 3D finite-difference-time-domain simulations.
authors.forename: L
authors.initials: L
authors.lastname: Frandsen
authors.forename: A
authors.initials: A
authors.lastname: Harpøth
authors.forename: P
authors.initials: P
authors.lastname: Borel
authors.forename: M
authors.initials: M
authors.lastname: Kristensen
authors.forename: J
authors.initials: J
authors.lastname: Jensen
authors.forename: O
authors.initials: O
authors.lastname: Sigmund