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Chinese Journal of Lasers, Volume. 52, Issue 6, 0606004(2025)

Temperature Adaptability of Tm3+‑Doped Heterogeneous Helical Cladding Large‑Mode‑Area Fiber

Jianhong Zhou1 and Xiao Shen1,2、*
Author Affiliations
  • 1College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, Jiangsu , China
  • 2State Key Laboratory of Luminescent Materials and Devices,South China University of Technology, Guangzhou 511442, Guangdong , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
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    References (17)
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    Figures & Tables(13)
    Schematic diagrams of HHC fiber structure. (a) Cross-sectional diagram of HHC fiber; (b) 3D perspective view of HHC fiber

    Fig. 1. Schematic diagrams of HHC fiber structure. (a) Cross-sectional diagram of HHC fiber; (b) 3D perspective view of HHC fiber

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    Schematic diagram of thulium ion 3H6→3H4 pumping scheme

    Fig. 2. Schematic diagram of thulium ion 3H6→3H4 pumping scheme

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    Flow chart of research program

    Fig. 3. Flow chart of research program

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    Influence of fiber parameters on loss. (a) Influence of refractive index difference (n0-n1) on loss; (b) influence of θ′on loss;

    Fig. 4. Influence of fiber parameters on loss. (a) Influence of refractive index difference (n0-n1) on loss; (b) influence of θ′on loss;

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    Optical path diagram of dual-end pumped fiber amplifier

    Fig. 5. Optical path diagram of dual-end pumped fiber amplifier

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    Power distributions of pump light and signal light

    Fig. 6. Power distributions of pump light and signal light

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    3D temperature distribution of fiber

    Fig. 7. 3D temperature distribution of fiber

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    3D distribution of thermally induced refractive index change

    Fig. 8. 3D distribution of thermally induced refractive index change

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    Distributions of mode loss along fiber axial direction in stable operating state

    Fig. 9. Distributions of mode loss along fiber axial direction in stable operating state

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    Mode loss versus calculation round

    Fig. 10. Mode loss versus calculation round

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    Mode loss change rate versus calculation round

    Fig. 11. Mode loss change rate versus calculation round

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    Fundamental mode and high-order mode losses versus total pump power

    Fig. 12. Fundamental mode and high-order mode losses versus total pump power

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    • Table 1. Parameters used in numerical calculations

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      Table 1. Parameters used in numerical calculations

      ParameterValueParameterValue
      Γp0.97σap6×10-25 m2
      Γs0.04σep0.5×10-25 m2
      λs2000 nmσas0.1×10-25 m2
      λp793 nmσes5×10-25 m2
      L4 mαp2.8×10-3 m-1
      r30 μmαs1.2×10-2 m-1
      d2‒5 μmk31013×10-23 m-3·s-1
      R1120 μmk13100.252×10-23 m-3·s-1
      R2150 μmk1.3 W/（m·K）
      τ1334.7 μsTc300 K
      τ314.2 μsα0.9×10-5 /K
      N0.5×1026 m-3h6.6260775×10-34 J·s
      qwater500 W/（m2·K）qwind100 W/（m2·K）
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    Jianhong Zhou, Xiao Shen. Temperature Adaptability of Tm3+‑Doped Heterogeneous Helical Cladding Large‑Mode‑Area Fiber[J]. Chinese Journal of Lasers, 2025, 52(6): 0606004

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    Paper Information

    Category: Fiber optics and optical communication

    Received: Aug. 20, 2024

    Accepted: Oct. 22, 2024

    Published Online: Mar. 18, 2025

    The Author Email: Xiao Shen (shenx@njupt.edu.cn)

    DOI:10.3788/CJL241157

    CSTR:32183.14.CJL241157

    Topics

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