{"title":"Broadband frequency measurement system based on dynamic wavelength tuning synergistically combined with stimulated Brillouin scattering.","authors":"Shuai Zu, Ying Wang, Pengyuan Huang, Yiying Gu, Jingjing Hu, Mingshan Zhao","doi":"10.1364/OL.568948","DOIUrl":null,"url":null,"abstract":"<p><p>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.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4366-4369"},"PeriodicalIF":3.3000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.568948","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
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.
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.