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Chinese Optics Letters, Volume. 17, Issue 12, 120603(2019)

Investigation on temperature characteristics of weak fiber Bragg gratings in a wide range

Xiaojun Fan1,2,3, Junfeng Jiang1,2,3、*, Xuezhi Zhang1,2,3、**, Kun Liu1,2,3, Shuang Wang1,2,3, and Tiegen Liu1,2,3
Author Affiliations
  • 1School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
  • 2Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin 300072, China
  • 3Key Laboratory of Opto-electronics Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China
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    (a) Reflection spectra of WFBGs with reflectivity of ∼0.25%, ∼0.5%, ∼1%, ∼5%, and ∼10%. Inset: the reflection spectra of 0.5% and 0.25% reflectivity WFBGs. (b) Photograph of a WFBG encapsulated by a capillary quartz tube.

    Fig. 1. (a) Reflection spectra of WFBGs with reflectivity of ∼0.25%, ∼0.5%, ∼1%, ∼5%, and ∼10%. Inset: the reflection spectra of 0.5% and 0.25% reflectivity WFBGs. (b) Photograph of a WFBG encapsulated by a capillary quartz tube.

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    (a) Wavelength, (b) reflectivity, and (c) reflection spectra of WFBGs with reflectivity of ∼0.25% in LH2 immersion experiments.

    Fig. 2. (a) Wavelength, (b) reflectivity, and (c) reflection spectra of WFBGs with reflectivity of ∼0.25% in LH2 immersion experiments.

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    (a) Temperature during LN2 experiment; the reflectivity of five WFBGs with reflectivity of (b) ∼0.25%, (c) ∼0.5%, (d) ∼1%, (e) ∼5%, and (f) ∼10%.

    Fig. 3. (a) Temperature during LN2 experiment; the reflectivity of five WFBGs with reflectivity of (b) ∼0.25%, (c) ∼0.5%, (d) ∼1%, (e) ∼5%, and (f) ∼10%.

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    (a) Temperature, (b) reflectivity variation, and (c) wavelength shift of the WFBG with reflectivity of ∼0.25% in silicone oil.

    Fig. 4. (a) Temperature, (b) reflectivity variation, and (c) wavelength shift of the WFBG with reflectivity of ∼0.25% in silicone oil.

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    Strain test results: (a) strain change, (b) reflectivity variation.

    Fig. 5. Strain test results: (a) strain change, (b) reflectivity variation.

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    Wavelength shifts of WFBGs with different reflectivity from −252.75°C to 200.94°C.

    Fig. 6. Wavelength shifts of WFBGs with different reflectivity from −252.75°C to 200.94°C.

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    • Table 1. Ambient Temperatures of Different Devices

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      Table 1. Ambient Temperatures of Different Devices

      DevicePreset Temperature (°C)Actual Temperature (°C)
      LH2–−252.75
      LN2–−195.43
      Alcohol tank−80−80.06
      Alcohol tank−60−59.71
      Oven−40−39.62
      Oven−109.42
      Oven2019.75
      Oven5049.06
      Oven8079.03
      Oven110107.75
      Oven140135.10
      Oil bath170170.27
      Oil bath200200.94
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    Xiaojun Fan, Junfeng Jiang, Xuezhi Zhang, Kun Liu, Shuang Wang, Tiegen Liu. Investigation on temperature characteristics of weak fiber Bragg gratings in a wide range[J]. Chinese Optics Letters, 2019, 17(12): 120603

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Jun. 22, 2019

    Accepted: Aug. 22, 2019

    Published Online: Dec. 3, 2019

    The Author Email: Junfeng Jiang (jiangjfjxu@tju.edu.cn), Xuezhi Zhang (zhangxz@tju.edu.cn)

    DOI:10.3788/COL201917.120603

    Topics

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