| Autor: |
Lian, Daixin, Zhao, Shi, Li, Wenlei, Chen, Jingye, Dai, Daoxin, Shi, Yaocheng |
| Zdroj: |
Nano-photonics; December 2023, Vol. 13 Issue: 1 p29-37, 9p |
| Abstrakt: |
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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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