Journal
OPTICS EXPRESS
Volume 29, Issue 5, Pages 7003-7014Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.416986
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Funding
- National Research Council Canada [HTSN 604, HTSN 209]
- Canada Research Chairs
- Natural Sciences and Engineering Research Council of Canada
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The antenna design utilizes subwavelength L-shaped radiating elements for high efficiency and compact size, suitable for optical communication applications.
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 mu m x 4.5 mu m. 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. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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