• Chinese Journal of Lasers
  • Vol. 47, Issue 11, 1106004 (2020)
Liu Chang, Pei Li*, Xie Yuheng, Wang Jianshuai, Zheng Jingjing, Ning Tigang, and Li Jing
Author Affiliations
  • Key Laboratory of All Optical Network and Advanced Telecommunication Network of Ministry of Education, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
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    DOI: 10.3788/CJL202047.1106004 Cite this Article Set citation alerts
    Liu Chang, Pei Li, Xie Yuheng, Wang Jianshuai, Zheng Jingjing, Ning Tigang, Li Jing. Design of Low Crosstalk Few Mode Multi-Core Fiber Based on Heterogeneous Structure[J]. Chinese Journal of Lasers, 2020, 47(11): 1106004 Copy Citation Text show less
    Refractive index profile of ring core
    Fig. 1. Refractive index profile of ring core
    Variation curve of the effective refractive index of the optical fiber with r1
    Fig. 2. Variation curve of the effective refractive index of the optical fiber with r1
    Variation of the LP01 mode with the core radius r1 and Δ
    Fig. 3. Variation of the LP01 mode with the core radius r1 and Δ
    Variation curve of effective refractive index with working wavelength in different modes
    Fig. 4. Variation curve of effective refractive index with working wavelength in different modes
    Variation curve of differential mode delay with wavelength
    Fig. 5. Variation curve of differential mode delay with wavelength
    Variation curve of inter-core crosstalk with core pitch
    Fig. 6. Variation curve of inter-core crosstalk with core pitch
    Relationship between crosstalk between cores and bending radius at different d. (a) LP01 mode; (b) LP11 mode; (c) LP21 mode
    Fig. 7. Relationship between crosstalk between cores and bending radius at different d. (a) LP01 mode; (b) LP11 mode; (c) LP21 mode
    Cross-sectional views of 12-core fiber with different core arrangements. (a) ORS; (b) SLS
    Fig. 8. Cross-sectional views of 12-core fiber with different core arrangements. (a) ORS; (b) SLS
    Variation curve of bending loss with cladding thickness
    Fig. 9. Variation curve of bending loss with cladding thickness
    ParameterValue
    Core1Core2
    Inner radius /μm3.13.05
    External radius /μm6.36.3
    Relative refractive indexdifference /%0.860.78
    Aeff of LP01 mode /μm2150.08150.02
    Aeff of LP11 mode /μm2166.83170.15
    Aeff of LP21 mode /μm2200.39212.82
    Table 1. Parameters of heterogeneous core and Aeff of each mode
    Core arrangementCore countCore pitch /μmCladding thickness /μmCladding diameter /μm
    ORS123650239.1
    SLS123650213.8
    Table 2. Parameters of 12-core fiber in different arrangements
    ParameterValue(core1/core2)
    Inner radius /μm3.1/3.05
    External radius /μm6.3/6.3
    Relative refractive index difference /%0.86/0.78
    Core pitch /μm36/36
    Cladding thickness /μm50/50
    Cladding diameter /μm213.8/213.8
    Effective area of LP01 mode /μm2150.08/150.02
    Effective area of LP11 mode /μm2166.83/170.15
    Effective area of LP21 mode /μm2200.39/212.82
    Inter-core crosstalk XTLP01LP01 /(dB·km-1)-0.4/-0.4
    Inter-core crosstalk XTLP11LP11 /(dB·km-1)-0.66/-0.66
    Inter-core crosstalk XTLP21LP21 /(dB·km-1)-0.78/-0.78
    Differential mode delay DMDLP01LP11 /(dB·km-1)5.66/5.58
    Differential mode delay DMDLP01LP21 /(dB·km-1)11.05/9.72
    Bending loss at 140 mm /(dB·km-1)2.6×10-5 /5.3×10-2
    Table 3. Designed fiber structure parameters and optical performance
    Liu Chang, Pei Li, Xie Yuheng, Wang Jianshuai, Zheng Jingjing, Ning Tigang, Li Jing. Design of Low Crosstalk Few Mode Multi-Core Fiber Based on Heterogeneous Structure[J]. Chinese Journal of Lasers, 2020, 47(11): 1106004
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