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Chinese Optics Letters, Volume. 17, Issue 6, 060601(2019)

High-accuracy optical time delay measurement in fiber link [Invited] Editors' Pick

Xiangchuan Wang, Shupeng Li, Xin Jiang, Jintao Hu, Min Xue, Shangzhe Xu, and Shilong Pan*
Author Affiliations
  • Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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    Figures&Tables (8)
    Equations (5)
    References (47)
    Cited By (15)
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    Figures & Tables(8)
    Schematic diagram of a typical OTDR system. LD, laser diode; FUT, fiber under test; PD, photodetector.

    Fig. 1. Schematic diagram of a typical OTDR system. LD, laser diode; FUT, fiber under test; PD, photodetector.

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    Structure of the OFDR system. TLS, tunable laser source; OC, optical coupler.

    Fig. 2. Structure of the OFDR system. TLS, tunable laser source; OC, optical coupler.

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    Configuration of an all-fiber mode-locked laser for the measurement of the fiber length. WDM, wavelength-division multiplexer.

    Fig. 3. Configuration of an all-fiber mode-locked laser for the measurement of the fiber length. WDM, wavelength-division multiplexer.

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    Schematic diagram of the fiber transmission delay (FTD) measurement system. (a) FTD measurement loop. (b) System delay control (SDC) loop. TIC, time interval counter; VCO, voltage control oscillator; PLL, phase-locked loop; WDM, wavelength division multiplexer.

    Fig. 4. Schematic diagram of the fiber transmission delay (FTD) measurement system. (a) FTD measurement loop. (b) System delay control (SDC) loop. TIC, time interval counter; VCO, voltage control oscillator; PLL, phase-locked loop; WDM, wavelength division multiplexer.

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    Schematic diagram of typical phase-derived range measurement system. RF, radio frequency.

    Fig. 5. Schematic diagram of typical phase-derived range measurement system. RF, radio frequency.

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    Schematic diagram of the optical vector analyzer based on chirped optical double sideband (ODSB) modulation. MZM, Mach–Zehnder modulator; PMD, phase-magnitude detector.

    Fig. 6. Schematic diagram of the optical vector analyzer based on chirped optical double sideband (ODSB) modulation. MZM, Mach–Zehnder modulator; PMD, phase-magnitude detector.

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    Schematic diagram of the optical microwave interferometer. MD, magnitude detector.

    Fig. 7. Schematic diagram of the optical microwave interferometer. MD, magnitude detector.

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    • Table 1. Comparison of the Measurement Systems

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      Table 1. Comparison of the Measurement Systems

      CategoryMethodsMeasurement RangeResolution
      Time domainOTDR209.47 km20 m[17]
      10 km340 μm[22]
      100 km2 m[19]
      OTDR based on chaotic light25 km6 cm[24]
      300 m50 μm[26]
      Frequency domainOFDR35 m22 μm[47]
      151 km11.2 cm[33]
      40 kmSub-cm[34]
      Fiber laser100 km5 cm[12]
      100 km9 mm[13]
      Phase-locked loop50 km0.15 mm[14]
      Phase-derived rangingDirect phase-derived ranging2 kmSub-100 μm[15,37]
      Indirect phase-derived rangingTens of metersSub-mm
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    Xiangchuan Wang, Shupeng Li, Xin Jiang, Jintao Hu, Min Xue, Shangzhe Xu, Shilong Pan, "High-accuracy optical time delay measurement in fiber link [Invited]," Chin. Opt. Lett. 17, 060601 (2019)

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Dec. 15, 2018

    Accepted: Mar. 1, 2019

    Published Online: Jun. 5, 2019

    The Author Email: Shilong Pan (pans@nuaa.edu.cn)

    DOI:10.3788/COL201917.060601

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology