Academic Journal
Grating-lobe-free optical phased array with 2-D circular sparse array aperture and high-efficiency phase calibration
| العنوان: | Grating-lobe-free optical phased array with 2-D circular sparse array aperture and high-efficiency phase calibration |
|---|---|
| المؤلفون: | Lian Daixin, Zhao Shi, Li Wenlei, Chen Jingye, Dai Daoxin, Shi Yaocheng |
| المصدر: | Nanophotonics, Vol 13, Iss 1, Pp 29-37 (2024) |
| بيانات النشر: | De Gruyter, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Physics |
| مصطلحات موضوعية: | silicon, optical phased array, sparse array, phase calibration, Physics, QC1-999 |
| الوصف: | An optical phased array (OPA) with 2-D circular sparse array aperture has been proposed and demonstrated in the silicon integrated photonic platform. The sparse distribution of the antenna array can realize no grating lobes in 2-D full field of view (FOV). To achieve fast and accurate phase calibration for OPA, an improved rotating element electric field vector algorithm based on golden section search method (GSS-REV) has also been proposed and verified. The 32-element antenna sparse distribution of the proposed OPA is designed and fabricated. A far-field beam steering measurement across 20° × 20° range features the side lobe suppression ratio (SLSR) of larger than 4.81 dB and a full width at half-maximum (FWHM) of approximately 0.63° × 0.59°. The resolvable points are derived to be ∼1076. The OPA chip has also been demonstrated on range measurement with frequency-modulated continuous-wave (FMCW) system. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2192-8614 |
| Relation: | https://doaj.org/toc/2192-8614 |
| DOI: | 10.1515/nanoph-2023-0519 |
| URL الوصول: | https://doaj.org/article/1ff85acb23884fab982fb6444ce28373 |
| رقم الانضمام: | edsdoj.1ff85acb23884fab982fb6444ce28373 |
| قاعدة البيانات: | Directory of Open Access Journals |
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