Improving the performance of optical antenna for optical phased arrays through high-contrast grating structure on SOI substrate.
Opt Express
; 27(3): 2703-2712, 2019 Feb 04.
Article
em En
| MEDLINE
| ID: mdl-30732304
ABSTRACT
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 µm, which exceeds 50% in a range of wavelength from 1.48 µm to 1.62 µm. 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° × 20.2° with a beam width of 2.4° × 2.5°, by employing the optical antenna proposed.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2019
Tipo de documento:
Article