移相模块
材料科学
计算机科学
算法
光子学
相控阵
光电子学
电信
天线(收音机)
微波食品加热
作者
Steven A. Miller,Yung-Chia Chang,Christopher T. Phare,Min Chul Shin,Moshe Zadka,Samantha P. Roberts,Brian Stern,Xingchen Ji,Aseema Mohanty,Oscar A. Jimenez Gordillo,Utsav D. Dave,Michal Lipson
出处
期刊:Optica
[The Optical Society]
日期:2020-01-02
卷期号:7 (1): 3-3
被引量:206
标识
DOI:10.1364/optica.7.000003
摘要
Optical phased arrays are a promising beam-steering technology for ultra-small solid-state lidar and free-space communication systems. Long-range, high-performance arrays require a large beam emission area densely packed with thousands of actively phase-controlled, power-hungry light emitting elements. To date, such large-scale phased arrays have been impossible to realize since current demonstrated technologies would operate at untenable electrical power levels. Here we show a multi-pass photonic platform integrated into a large-scale phased array that lowers phase shifter power consumption by nearly 9 times. The multi-pass structure decreases the power consumption of a thermo-optic phase shifter to a P π of 1.7 m W / π without sacrificing speed or optical bandwidth. Using this platform, we demonstrate a silicon photonic phased array containing 512 actively controlled elements, consuming only 1.9 W of power while performing 2D beam steering over a 70 ∘ × 6 ∘ field of view. Our results demonstrate a path forward to building scalable phased arrays containing thousands of active elements.
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