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Optical vector analyzer with time-domain analysis capability

机译：具有时域分析能力的光学矢量分析仪

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摘要

Time-domain analysis (TDA) is useful for measuring optical devices along with a link and for diagnosing a long device. In this Letter, an optical vector analyzer with TDA capability is proposed and experimentally demonstrated. The key to realizing TDA is a low-coherence optical carrier, which is achieved by modulating an electrical broadband signal on a continuous-wave light via acousto-optic modulation. Then, optical single-sideband modulation and vector balanced detection are used to measure the total frequency response of multiple devices under test (DUTs). Through an inverse Fourier transform, the obtained DUT impulses are distinguished in the time domain. Finally, time-domain gating and Fourier transform are applied to extract the frequency response of each DUT. An experiment is performed in which a fiber link comprising three DUTs and an (HCN)-C-13-N-14 gas cell with a breakpoint inserted is characterized. The frequency setting resolution is 5 MHz, and a time-domain resolution of 30.84 ns is proved, which can reach 14.881 ns in theory. (C) 2021 Optical Society of America
机译：时域分析（TDA）可用于测量光学设备和链路，以及诊断长设备。在这封信中，提出了一种具有TDA功能的光学矢量分析仪，并进行了实验验证。实现TDA的关键是低相干光载波，它是通过声光调制在连续波光上调制电宽带信号来实现的。然后，使用光学单边带调制和矢量平衡检测来测量多个被测设备（DUT）的总频率响应。通过傅里叶逆变换，可在时域内区分获得的DUT脉冲。最后，应用时域选通和傅里叶变换提取每个DUT的频率响应。进行了一项实验，其中对由三个DUT和一个插入断点的（HCN）-C-13-N-14气室组成的光纤链路进行了表征。频率设置分辨率为5mhz，时域分辨率为30.84ns，理论上可达14.881ns。（2021）美国光学学会

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  • 来源
    《Optics Letters》 |2021年第2期|共4页
  • 作者

    Li Shupeng; Qing Ting; Wang Lihan; Chen Xufeng; Fang Yijie; Tang Xiaohu; Cao Meihui; Pan Shilong;

  • 作者单位

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Key Lab Radar Imaging &

    Microwave Photon Minist Educ Nanjing 210016 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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