用于精确FMCW光学测距的激光二极管线性化光频啁啾

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-03-24 DOI:10.1109/LPT.2025.3554238

Meng Shan;Koichi Iiyama

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引用次数: 0

摘要

通过对远程FMCW光学测距系统调制波形的优化，对外腔激光器的光频啁啾进行线性化处理。用辅助干涉仪的干涉信号对激光器的调制信号进行采样，采样后的调制信号作为新的调制信号。因此，光学频率是线性啁啾的。在50kHz调制频率下实现线性化，测量范围可达66m光纤和10m自由空间。用FMCW光学测距系统的测距分辨率和测距精度来评价光频啁啾的线性度，测距分辨率几乎达到理论极限，表明激光器的光频具有高度线性啁啾。

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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Linearizing Optical Frequency Chirp of a Laser Diode for Accurate FMCW Optical Ranging

Optical frequency chirp of an external-cavity laser is linearized by optimizing the modulation waveform for long-range FMCW optical ranging system. The modulation signal of the laser is sampled with the interference signal of the auxiliary interferometer, and the sampled modulation signal is used as a new modulation signal. As a result, the optical frequency is linearly chirped. The linearization is realized at 50kHz modulation frequency and the measurement range of up to 66m optical fiber and up to 10m in free space. The linearity of the optical frequency chirp is evaluated by the ranging resolution and the ranging accuracy of the FMCW optical ranging system, and the ranging resolution is almost the theoretical limit, indicating that the optical frequency of the laser is highly linearly chirped.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.