Broadband frequency measurement system based on dynamic wavelength tuning synergistically combined with stimulated Brillouin scattering.

IF 3.3 2区 物理与天体物理 Q2 OPTICS
Optics letters Pub Date : 2025-07-01 DOI:10.1364/OL.568948
Shuai Zu, Ying Wang, Pengyuan Huang, Yiying Gu, Jingjing Hu, Mingshan Zhao
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引用次数: 0

Abstract

This paper proposes and validates a broadband frequency measurement system based on dynamic wavelength tuning synergistically combined with stimulated Brillouin scattering (SBS). By integrating a laser wavelength tuning mechanism with dynamic matching of the Brillouin gain spectrum, a frequency-to-time mapping approach is implemented to achieve microwave frequency measurement covering 9-40 GHz. The root mean square error of the proposed method is experimentally validated to be 20 MHz. The system employs a low-frequency arbitrary waveform generator (AWG) to drive laser wavelength tuning, directly generating a 31 GHz bandwidth swept-frequency signal in the optical domain. Experimental results demonstrate that the system supports both single- and two-tone signal detection and realizes measurement range reconfiguration by adjusting local oscillator frequency. Compared with conventional schemes, this architecture achieves significant breakthroughs in measurement bandwidth, system cost, and reconfigurability, providing a novel, to the best of our knowledge, approach for broadband radio frequency detection.

基于动态波长调谐与受激布里渊散射协同结合的宽带频率测量系统。
提出并验证了一种基于动态波长调谐与受激布里渊散射(SBS)协同结合的宽带频率测量系统。通过将激光波长调谐机制与布里渊增益谱的动态匹配相结合,实现了频率-时间映射方法,实现了覆盖9-40 GHz的微波频率测量。实验验证了该方法的均方根误差为20 MHz。该系统采用低频任意波形发生器(AWG)驱动激光波长调谐,直接在光域中产生31 GHz带宽的扫频信号。实验结果表明,该系统支持单音和双音信号检测,并通过调整本振频率实现量程重构。与传统方案相比,该架构在测量带宽、系统成本和可重构性方面取得了重大突破,为宽带射频检测提供了一种据我们所知的新颖方法。
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来源期刊
Optics letters
Optics letters 物理-光学
CiteScore
6.60
自引率
8.30%
发文量
2275
审稿时长
1.7 months
期刊介绍: The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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