Abstract

Optical phased arrays (OPAs) with high speed, low power consumption, and low insertion loss are appealing for various applications, including light detection and ranging, free-space communication, image projection, and imaging. These OPAs can be achieved by fully harnessing the advantages of integrated lithium niobate (LN) photonics, which include high electro-optical modulation speed, low driving voltage, and low optical loss. Here we present an integrated LN OPA that operates in the near-infrared regime. Our experimental results demonstrate 24 × 8° two-dimensional beam steering, a far-field beam spot with a full width at half maximum of 2 × 0.6°, and a sidelobe suppression level of 10 dB. Furthermore, the phase modulator of our OPA exhibits a half-wave voltage of 6 V. The low power consumption exhibited by our OPA makes it highly attractive for a wide range of applications. Beyond conventional applications, our OPA’s high speed opens up the possibility of novel applications such as high-density point cloud generation and tomographic holography.

© 2023 Optica Publishing Group

Hybrid integrated thin-film lithium niobate–silicon nitride electro-optical phased array incorporating silicon nitride grating antenna for two-dimensional beam steering

Woo-Bin Lee, Yun-Jae Kwon, Do-Hyung Kim, Yoon-Ho Sunwoo, and Sang-Shin Lee
Opt. Express 32(6) 9171-9183 (2024)

High-speed 2D beam steering based on a thin-film lithium niobate optical phased array with a large field of view

Wenlei Li, Xu Zhao, Jianghao He, Hao Yan, Bingcheng Pan, Zichen Guo, Xiang’e Han, Jingye Chen, Daoxin Dai, and Yaocheng Shi
Photon. Res. 11(11) 1912-1918 (2023)

On-chip silicon optical phased array for two-dimensional beam steering

David Kwong, Amir Hosseini, John Covey, Yang Zhang, Xiaochuan Xu, Harish Subbaraman, and Ray T. Chen
Opt. Lett. 39(4) 941-944 (2014)

Liquid-cladded optical phased array for a single-wavelength beam steering

Binghui Li, Caiming Sun, Hongjie Wang, Zhenmin Chen, Xiaomin Nie, Shupeng Deng, Lesi Yang, and Aidong Zhang
Opt. Lett. 46(19) 4948-4951 (2021)

Parallel emitted silicon nitride nanophotonic phased arrays for two-dimensional beam steering

Caiming Sun, Lesi Yang, Binghui Li, Wu Shi, Hongjie Wang, Zhenmin Chen, Xiaomin Nie, Shupeng Deng, Ning Ding, and Aidong Zhang
Opt. Lett. 46(22) 5699-5702 (2021)