Frontiers in Physics (Oct 2022)

Low-crosstalk silicon-photonics arrayed waveguide gratings integrated with micro-ring filter

  • Shiping Liu,
  • Heming Hu,
  • Heming Hu,
  • Xiaoyue Ma,
  • Runyu Dong,
  • Qing Fang,
  • Hua Chen

DOI
https://doi.org/10.3389/fphy.2022.1018589
Journal volume & issue
Vol. 10

Abstract

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A low-crosstalk compact arrayed waveguide grating integrated with a tunable micro-ring resonator is demonstrated on silicon-on-insulator platform, The side-lobe of the silicon nanowire AWG, introduced by fabrication errors, can be effectively suppressed by the Ring Filter, The crosstalk level of the side-lobe can be reduced from -16.3 dB to -26.8dB, in addition, the crosstalk of integrate AWG have improved over the entire 3 dB bandwidth, with a maximum crosstalk improvement of 8.9 dB at the left and right wavelengths of the 3 dB bandwidth, and the excess loss from the ring resonator can be ignorable in principle.

Keywords