Journal
OPTICS EXPRESS
Volume 27, Issue 3, Pages 2703-2712Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.002703
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Funding
- National Key Research and Development Program of China [2018YFA0209001]
- Frontier Science Research Project of CAS [QYZDY-SSW-JSC021]
- National Natural Science Foundation of China [61604144, 61504137]
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A novel optical antenna for optical phased arrays is proposed and simulated. A high-contrast grating structure is used to achieve extremely efficient emission. The emission efficiency is as high as 93.94% at 1.55 mu m, which exceeds 50% in a range of wavelength from 1.48 mu m to 1.62 mu m. The antenna can achieve a perfect grating lobe suppression with background suppression of 28.4 dB when the phase difference between adjacent waveguides is 0. A 16-wire optical phased array can easily achieve a scan range of +/- 22.8 degrees x 20.2 degrees with a beam width of 2.4 degrees x 2.5 degrees, by employing the optical antenna proposed. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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