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Laser & Optoelectronics Progress, Volume. 56, Issue 5, 050602(2019)

Influence Factors of Confinement Loss of Negative Curvature Hollow Core Fiber

Xiang Chen, Xiongwei Hu, and Jinyan Li*
Author Affiliations
  • Wuhan National Research Center for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (22)
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    References (24)
    Cited By (4)
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    Figures & Tables(22)
    Schematic of resonance and anti-resonance

    Fig. 1. Schematic of resonance and anti-resonance

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    Electric field mode in negative curvature hollow core fiber. (a) Fundamental mode; (b) tube mode

    Fig. 2. Electric field mode in negative curvature hollow core fiber. (a) Fundamental mode; (b) tube mode

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    Structure of single layer four tubes negative curvature hollow core fiber

    Fig. 3. Structure of single layer four tubes negative curvature hollow core fiber

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    Effective refractive index of fundamental mode at different tube thicknesses

    Fig. 4. Effective refractive index of fundamental mode at different tube thicknesses

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    Power ratio of fundamental mode at different tube thicknesses

    Fig. 5. Power ratio of fundamental mode at different tube thicknesses

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    Confinement loss of fundamental mode at different tube thicknesses

    Fig. 6. Confinement loss of fundamental mode at different tube thicknesses

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    Effective refractive index of fundamental mode and tube mode in single layer four tubes negative curvature hollow core fiber

    Fig. 7. Effective refractive index of fundamental mode and tube mode in single layer four tubes negative curvature hollow core fiber

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    Power ratio of fundamental mode in single layer four tubes negative curvature hollow core fiber

    Fig. 8. Power ratio of fundamental mode in single layer four tubes negative curvature hollow core fiber

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    Confinement loss of fundamental mode in single layer four tubes negative curvature hollow core fiber

    Fig. 9. Confinement loss of fundamental mode in single layer four tubes negative curvature hollow core fiber

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    Confinement loss of fundamental mode at different tube diameters with 20 μm core diameter

    Fig. 10. Confinement loss of fundamental mode at different tube diameters with 20 μm core diameter

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    Confinement loss of fundamental mode at different RT/C

    Fig. 11. Confinement loss of fundamental mode at different RT/C

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    Negative curvature hollow core fibers. (a) Two layers four tubes with nested tubes; (b) three layers four tubes with nested tubes

    Fig. 12. Negative curvature hollow core fibers. (a) Two layers four tubes with nested tubes; (b) three layers four tubes with nested tubes

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    Confinement loss of fundamental mode in two layers four tubes negative curvature hollow core fiber with nested tubes

    Fig. 13. Confinement loss of fundamental mode in two layers four tubes negative curvature hollow core fiber with nested tubes

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    Power ratio of fundamental mode in two layers four tubes negative curvature hollow core fiber with nested tubes

    Fig. 14. Power ratio of fundamental mode in two layers four tubes negative curvature hollow core fiber with nested tubes

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    Variation of power ratio of fundamental mode with thickness of air layer in two layers four tubes negative curvature hollow core fiber with nested tubes

    Fig. 15. Variation of power ratio of fundamental mode with thickness of air layer in two layers four tubes negative curvature hollow core fiber with nested tubes

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    Three layers slab optical waveguide

    Fig. 16. Three layers slab optical waveguide

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    Confinement loss of fundamental mode in single layer,two layers and three layers four tubes negative curvature hollow core fibers

    Fig. 17. Confinement loss of fundamental mode in single layer,two layers and three layers four tubes negative curvature hollow core fibers

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    Power ratio of fundamental mode in negative curvature hollow core fibers

    Fig. 18. Power ratio of fundamental mode in negative curvature hollow core fibers

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    Variation of confinement loss of fundamental mode with thickness of air layer in three layers four tubes negative curvature hollow core fiber with nested tubes

    Fig. 19. Variation of confinement loss of fundamental mode with thickness of air layer in three layers four tubes negative curvature hollow core fiber with nested tubes

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    Confinement loss of fundamental mode in single layer, two layers and, three layers 6 and 8 tubes negative curvature hollow core fibers

    Fig. 20. Confinement loss of fundamental mode in single layer, two layers and, three layers 6 and 8 tubes negative curvature hollow core fibers

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    • Table 1. Mode effective index and confinement loss of negative curvature hollow core fiber

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      Table 1. Mode effective index and confinement loss of negative curvature hollow core fiber

      ModeEffective indexAverage confinement loss /(dB·km-1)
      LP010.998602966000370-1.69859841840119×10-110.998602958935283-1.97651259342529×10-116.47×10-1
      LP110.996709063613520-5.75814156104491×10-80.996679673022994-4.67351275404594×10-80.996621156318788-5.96804687485307×10-90.996592958466542-2.16581295879327×10-99.89×102
      LP210.994798584019113-8.33081319495409×10-60.994798584019113-8.33081319494673×10-60.994798445347296-8.33114153520580×10-60.994798445347296-8.33114153520367×10-62.93×105
      LP020.993481085871916-4.60717915161041×10-70.993480894105488-4.59180599078204×10-71.62×104

    • Table 2. Structural fault tolerance of negative curvature hollow core fiber

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      Table 2. Structural fault tolerance of negative curvature hollow core fiber

      StructuralparameterInitialconfinementloss/ (dB·km-1)Confinement loss whenparameter positivefloating 1% /(dB·km-1)Confinement loss whenparameter negativefloating 1% /(dB·km-1)Influence /%
      Core diameter (20 μm)0.6471.3341.608148.53
      Glass wall thickness (0.4 μm)2.3640.986265.38
      Air layer thickness (9 μm)2.6200.793304.95
      Inner tube diameter (18 μm)2.9520.964356.26
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    Xiang Chen, Xiongwei Hu, Jinyan Li. Influence Factors of Confinement Loss of Negative Curvature Hollow Core Fiber[J]. Laser & Optoelectronics Progress, 2019, 56(5): 050602

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Aug. 4, 2018

    Accepted: Sep. 12, 2018

    Published Online: Jul. 31, 2019

    The Author Email: Jinyan Li (ljy@mail.hust.edu.cn)

    DOI:10.3788/LOP56.050602

    Topics

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