Subwavelength grating crossings for silicon wire waveguides.
We report on the design, simulation and experimental demonstration of a new type of waveguide crossing based on subwavelength gratings in silicon waveguides. We used 3D finite-difference time-domain simulations to minimize loss, crosstalk and polarization dependence. Measurement of fabricated devices show that our waveguide crossings have a loss as low as -0.023 dB/crossing, polarization dependent loss of < 0.02 dB and crosstalk <-40 dB.
Bock
Przemek J
PJ
Institute for Microstructural Sciences, National Research Council Canada, Ottawa, Canada. przemek.bock@nrc.ca
Cheben
Pavel
P
Schmid
Jens H
JH
Lapointe
Jean
J
Delâge
André
A
Xu
Dan-Xia
DX
Janz
Siegfried
S
Densmore
Adam
A
Hall
Trevor J
TJ