Linear Frequency Swept Laser With High-Repetition-Rate Based on an Iterative Predistortion Method in the Fourier Domain

Guomeng Zuo1; Quanxin Na2; Liyang Shao1; Xiaoqi Zhu3; Qijie Xie2; Huabei Liu1; Fang Zhao1; Hao Zhang2; Dongwei Zhuang2; Junfeng Song3

10.1109/ACP/POEM59049.2023.10369644

2023

979-8-3503-1262-1

2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM)

1-3

4-7 Nov. 2023

Wuhan, China

We present a novel iterative pre-distortion method in the Fourier domain, specifically designed for frequency modulated continuous wave (FMCW) laser system with high modulation frequency and exceptional linearity. A finite Fourier coefficients are used to control the laser drive voltage waveform by the predistorted method in Fourier domain. A linear frequency sweep is achieved by iterating over the waveform. The test showcases that the relative residual nonlinearity of frequency sweep is only about 0.82 %o, when an external cavity laser is modulated at repetition rate of 150 kHz. The significance of this advancement lies in its potential to increase point cloud density of FMCW Lidar measurements, making it a promising solution for a wide range of applications in diverse fields, such as autonomous vehicles, remote sensing, and environmental monitoring.

FMCW Lidar linear pre-distortion narrow linewidth laser

第一

EI

20240515453362

IEEE

1.School of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
2.Peng Cheng Laboratory, Shenzhen, Guangdong, China
3.Shenzhen Photonx Technology Co. Ltd., Shenzhen, China

Guomeng Zuo,Quanxin Na,Liyang Shao,et al. Linear Frequency Swept Laser With High-Repetition-Rate Based on an Iterative Predistortion Method in the Fourier Domain[C],2023:1-3.