Compact and highly-efficient broadband surface grating antenna on a silicon platform Academic Article uri icon

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abstract

  • We present a compact silicon-based surface grating antenna design with a high diffraction efficiency of 89% (-0.5 dB) and directionality of 0.94. The antenna is designed with subwavelength-based L-shaped radiating elements in a 300-nm silicon core, maintaining high efficiency with a compact footprint of 7.6 µm × 4.5 µm. The reflectivity remains below -10 dB over the S, C and L optical communication bands. A broad 1-dB bandwidth of 230 nm in diffraction efficiency is achieved with a central wavelength of 1550 nm.

authors

  • Khajavi, Shahrzad
  • Melati, Daniele
  • Cheben, Pavel
  • Schmid, Jens H
  • Liu, Qiankun
  • Xu, Dan Xia
  • Ye, Winnie N

publication date

  • March 1, 2021