铌酸锂
光学
光束转向
相控阵光学
相控阵
材料科学
栅栏
光电子学
带宽(计算)
相位调制
梁(结构)
天线(收音机)
物理
计算机科学
电信
相位噪声
作者
Wenlei Li,Zhao Xu,Jianghao He,Hao Yan,Bingcheng Pan,Zichen Guo,Xiang’e Han,Jingye Chen,Daoxin Dai,Yaocheng Shi
出处
期刊:Photonics Research
[Optica Publishing Group]
日期:2023-09-12
卷期号:11 (11): 1912-1912
被引量:13
摘要
An on-chip optical phased array (OPA) is considered as a promising solution for next generation solid-state beam steering. However, most of the reported OPAs suffer from low operating bandwidths, making them limited in many applications. We propose and demonstrate a high-speed 2D scanning OPA based on thin-film lithium niobate phase modulators with traveling-wave electrodes. The measured modulation bandwidth is up to 2.5 GHz. Moreover, an aperiodic array combined with a slab grating antenna is also used to suppress the grating lobes of far-field beams, which enables a large field of view (FOV) as well as small beam width. A 16-channel OPA demonstrates an FOV of 50°×8.6° and a beam width of 0.73°×2.8° in the phase tuning direction and the wavelength scanning direction, respectively.
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