相控阵
激光雷达
相控阵光学
移相模块
CMOS芯片
物理
频道(广播)
炸薯条
光子学
电气工程
电压
功率(物理)
光学
材料科学
光电子学
工程类
插入损耗
量子力学
天线(收音机)
作者
Benjamin Moss,Christopher V. Poulton,Matthew J. Byrd,Peter Russo,Oleg Shatrovoy,David W. Paquette,Arthur C. Reardon,Michael R. Watts
标识
DOI:10.23919/vlsitechnologyandcir57934.2023.10185161
摘要
A CMOS driver chip for controlling an optical phased array realizing $\mathrm{a}\gt50$ meter coherent LiDAR engine has been demonstrated. Five identical 2048-channel driver chips flip onto a single silicon photonics LiDAR engine IC containing the 9,216-element optical phased array. Each voltage-mode driver cell controls an individual electro-optic phase shifter in the array and adjusts the phase shift from 0 to $2 \pi$ over 8 bits. Each driver cell has an average power of $125 \mu \mathrm{W}$ with a resolve time of $\lt400$ ns and the driver chip is capable of a system pointto-point steering time $\lt 3.8 \mu \mathrm{s}$.
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