- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
We demonstrate highly efficient couplers in a two-dimensional grating configuration for a vertical fiber-coupling fabricated in the silicon-on-insulator platform. A combination of sub-wavelength reflectors and blazed gratings enables both high coupling efficiency and vertical grating coupling. We experimentally achieve coupling efficiencies of -2.6 dB at 1544 nm and -3.4 dB at 1536 nm for x- and y-polarized LP01 modes, respectively. The experimental results are in good agreement with the simulated -2.4 dB coupling efficiency for both polarizations at a wavelength of 1550 nm. Simulated and measured crosstalk between two polarizations were -19 dB and <;-16 dB, respectively. Show more
Journal / seriesIEEE Photonics Journal
Pages / Article No.
SubjectGrating coupler; Polarization diversity; Silicon photonics
Organisational unit03974 - Leuthold, Juerg / Leuthold, Juerg
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