Fast-speed and low-power-consumption optical phased array based on lithium niobate waveguides

Wang Zhizhang; Li Xueyun; Ji Jitao; Sun Zhenxing; Sun Jiacheng; Fang Bin; Lu Jun; Li Shaobo; Ma Xiang; Chen Xiangfei; Zhu Shining; Li Tao

doi:10.1515/nanoph-2024-0066

Nanophotonics (Mar 2024)

Fast-speed and low-power-consumption optical phased array based on lithium niobate waveguides

Wang Zhizhang,
Li Xueyun,
Ji Jitao,
Sun Zhenxing,
Sun Jiacheng,
Fang Bin,
Lu Jun,
Li Shaobo,
Ma Xiang,
Chen Xiangfei,
Zhu Shining,
Li Tao

Affiliations

Wang Zhizhang: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Li Xueyun: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Ji Jitao: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Sun Zhenxing: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Sun Jiacheng: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Fang Bin: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Lu Jun: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Li Shaobo: Optical Communication Research and Development Center, The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang, 050051, China
Ma Xiang: Optical Communication Research and Development Center, The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang, 050051, China
Chen Xiangfei: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Zhu Shining: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China
Li Tao: National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, 12581Nanjing University, Nanjing, 210093, China

DOI: https://doi.org/10.1515/nanoph-2024-0066
Journal volume & issue: Vol. 13, no. 13
pp. 2429 – 2436

Abstract

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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 successfully demonstrated integrated OPAs with multiple waveguides channels based on thin-film lithium niobate-on-insulator (LNOI) platform. Specifically, two lithium niobate (LN) OPA chips have been implemented with 32 and 48 channels LN waveguides, respectively, enabled by electro-optic modulations, which showcases the low power consumption (1.11 nJ/π) and fast operation speed (14.4 ns), showing obvious advantage of the LNOI platform over others. As results, we experimentally achieved a beam steering with a 62.2° × 8.8° field of view (FOV) and a beam divergence of 2.4° × 1.2° for 32 channels, and a FOV of 40° × 8.8° and a beam divergence of 0.33° × 1.8° for 48 channels. This work also demonstrates the feasibility of LNOI platform in scalable OPA chips.

Published in Nanophotonics

ISSN: 2192-8606 (Print); 2192-8614 (Online)
Publisher: De Gruyter
Country of publisher: Germany
LCC subjects: Science: Physics
Website: https://www.degruyter.com/journal/key/nanoph/html#submit

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