Millimeter-level resolution parallel ranging system based on a flat-top frequency modulated electro-optic frequency comb

IF 2.6 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physics Letters A Pub Date : 2026-06-15 Epub Date: 2026-03-03 DOI:10.1016/j.physleta.2026.131545

Hao Pan, Fengqiang He, Zitong Wu

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引用次数: 0

Abstract

In this paper, we propose a millimeter-level-resolution parallel ranging scheme based on a flat-top frequency-modulated electro-optic frequency comb (FM-EOFC). A linearly swept FMCW laser generated by single-sideband modulation seeds a cascaded electro-optic modulation structure to produce an FM-EOFC with 25 GHz spacing, 71 comb lines with flatness <1 dB, and a chirp rate of 100 GHz/μs per line. The distinct comb lines are mapped to 71 wavelength-division-multiplexed ranging channels, enabling parallel ranging without multiple swept lasers. The results show that without the need for multiple swept-laser sources, the proposed scheme achieves parallel laser ranging with 71 detection channels and millimeter-level resolution, while maintaining good inter-channel consistency and system stability. The scheme offers significant advantages in system compactness, measurement throughput, and channel scalability, providing a promising technical route for the development of next-generation high-precision, high-throughput FMCW LiDAR and related precision optical ranging systems.

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基于平顶调频电光频率梳的毫米级分辨率平行测距系统

本文提出了一种基于平顶调频电光频梳（FM-EOFC）的毫米级分辨率平行测距方案。利用单边带调制种子产生的线性扫频FMCW激光器，采用级联电光调制结构，产生间距为25 GHz、梳线为71条、平整度为1 dB、啁啾速率为100 GHz/μs的FM-EOFC。不同的梳线被映射到71个波分复用测距通道上，无需多个扫频激光器即可实现并行测距。结果表明，该方案在不需要多个扫描激光源的情况下，实现了71个探测通道和毫米级分辨率的平行激光测距，同时保持了良好的通道间一致性和系统稳定性。该方案在系统紧凑性、测量吞吐量和通道可扩展性方面具有显著优势，为下一代高精度、高吞吐量FMCW激光雷达及相关精密光学测距系统的发展提供了一条有前途的技术路线。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physics Letters A 物理-物理：综合

CiteScore

5.10

自引率

3.80%

发文量

493

审稿时长

30 days

期刊介绍： Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.