Open AccessBroadband photonic crystal waveguide 60� bend obtained utilizing topology optimization
Author(s) -
Lars Hagedorn Frandsen,
Anders Harpøth,
Peter Ingo Borel,
Martin Kristensen,
Jakob Søndergaard Jensen,
Ole Sigmund
Publication year - 2004
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.005916
Subject(s) - optics , broadband , planar , photonic crystal , finite difference time domain method , polarization (electrochemistry) , photonic integrated circuit , materials science , coupled mode theory , waveguide , bandwidth (computing) , optoelectronics , physics , refractive index , computer science , telecommunications , chemistry , computer graphics (images)
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.