Subwavelength grating crossings for silicon wire waveguides
Optics express, 2010•opg.optica.org
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.
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.
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.
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