Fast-speed and low-power-consumption optical phased array based on thin-film lithium niobate platform
Abstract
Fast scanning-speed and low-power-consumption are becoming progressively more and more important in realizing high-performance chiplet optical phased arrays (OPAs). Here, we establish an integrated OPA based on thin-film lithium niobate-on-insulator (LNOI) platform to access these outstanding performances. Significantly, a lithium niobate (LN) OPA chip is implemented by 32/48 channels LN waveguides enabled by electro-optic modulations, which showcases the low power consumption (1.11nJ/{\pi}}) and fast operation speed (14.4 ns) promising the advantage of the LNOI platform for integrated OPAs. As results, we experimentally achieved a beam steering with a 62.2{\deg}*8.8{\deg} field of view (FOV) and a beam divergence of 2.4{\deg}*1.2{\deg}. Moreover, by employing sparse aperiodic arrays in waveguides design we obtained a significant reduction of lateral divergence to 0.33{\deg} for the radiation beam. This work demonstrate that remarkable advantage of LNOI platform for power-saving and scalable OPA chips for various applications.
Keywords
Cite
@article{arxiv.2304.11591,
title = {Fast-speed and low-power-consumption optical phased array based on thin-film lithium niobate platform},
author = {Zhizhang Wang and Xueyun Li and Jitao Ji and Zhenxing Sun and Jiacheng Sun and Bin Fang and Jun Lu and Xiangfei Chen and Shining Zhu and Tao Li},
journal= {arXiv preprint arXiv:2304.11591},
year = {2023}
}
Comments
22 pages,5 figures,conferences added