Broadband photonic crystal waveguide 60 degrees bend obtained utilizing topology optimization.
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.
Frandsen
L
L
Harpøth
A
A
Borel
P
P
Kristensen
M
M
Jensen
J
J
Sigmund
O
O