High-Accuracy Solid-State LiDAR Based on Optical Intensity Modulation and Coherent Detection

Junze Tian, Jianhao Duan, Bin Wang, Weifeng Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We propose and experimentally demonstrate a high-accuracy solid-state LiDAR based on optical intensity modulation and coherent detection. In the proposed system, a high-speed Mach-Zehnder modulator (MZM) is employed to perform optical intensity modulation for range detection, and a free-space optical coherent receiver constructed by an optical hybrid and four charge-coupled devices (CCDs) is used to perform coherent detection and to improve the signal-to-noise ratio. In this way, the depth information of the target objects is mapped to the grayscale images captured by the CCDs, and non-scanning 3D imaging with a high accuracy can be realized. In the experimental demonstration, the 3D image of a home-made target object is acquired by the proposed solid-state LiDAR, and the range detection accuracy is as high as 2.75 mm.

Original languageEnglish
Title of host publication2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350312614
DOIs
Publication statusPublished - 2023
Event2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023 - Wuhan, China
Duration: 4 Nov 20237 Nov 2023

Publication series

Name2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

Conference

Conference2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
Country/TerritoryChina
CityWuhan
Period4/11/237/11/23

Keywords

  • CCD
  • Solid-state LiDAR
  • coherent detection
  • optical intensity-modulation

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