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该论文提出了一种用于FMCW LiDAR的单芯片激光二极管驱动器，通过结合快速光环路和高效开关环路，并在模拟电路中实现激光二极管拟合模型，实现了闭环光频率线性化，无需外部MZI、光电探测器或大型设备。该设计在180nm CMOS工艺中验证，实现了紧凑的集成方案。
Abstract A laser diode driver with supply-intrinsic current shaping for FMCW LiDAR is presented. By combining a fast optical loop and an efficient switching loop, and with the LD fitted model realized in analog circuits, the design achieves closed-loop optical frequency linearization without MZI, external PD, or bulky equipment. Measurements in 180nm CMOS confirm effective frequency-sweep linearization and tunable modulation capability in a compact, highly integrated design for mobile FMCW LiDAR. The Frequency-Modulated Continuous-Wave (FMCW) Light Detection and Ranging (LiDAR) technology achieves the level of precision desired for applications e.g. Advanced DriverAssistance Systems, 3D points cloud generation, and autonomous driving [1-2]. FMCW LiDAR offers several advantages: 1) Unlike pulsed LiDAR that measures distance by blasting short light pulses and detecting the round-trip time, FMCW LiDAR transmits a linearlyswept-frequency laser towards the target, and receives the reflect
Wenshuo Zhu1, Jianqiang Jiang1, Xuan Sun1, Zhenhao Li1, Tingyi Gu2, Xin Zhang3, Cheng Huang1
Iowa State University, Ames, IA, 2University of Delaware, Newark, DE, 3IBM T. J. Watson Research Center, Yorktown Heights, NY