Measurement of Mode Coupling at a Splice Point Between Few-Mode Fiber

Weicheng Chen; Guijun Hu; Feng Liu; Cuiguang Chen; Boran Wang

doi:10.3788/AOS201737.1206005

Acta Optica Sinica, Volume. 37, Issue 12, 1206005(2017)

Measurement of Mode Coupling at a Splice Point Between Few-Mode Fiber

Weicheng Chen, Guijun Hu^*, Feng Liu, Cuiguang Chen, and Boran Wang

Author Affiliations

College of Communication Engineering, Jilin University, Changchun, Jilin 130012, China

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Figures & Tables(9)

Fig. 1. Schematic for splicing two FMFs with off-axis distance of d

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Fig. 2. Rayleigh backscattering power distribution. (a) LP01 mode excited; (b) LP11a mode excited

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Fig. 3. Experimental measurement system of mode coupling at a splice point based on few-mode fiber

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Fig. 4. Backscattering power distribution of the LP01 and LP11a modes with LP01 mode excited (d=1.5 μm)

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Fig. 5. Backscattering power distribution of the LP11a and LP11b modes with LP11a mode excited (d=1.5 μm)

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Fig. 6. Backscattering power distribution of the LP01 and LP11a modes with LP01 mode excited (d=2.0 μm)

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Fig. 7. Backscattering power distribution of the LP11a and LP11b modes with LP11a mode excited (d=2.0 μm)

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Table 1. Related parameters of few-mode fiber
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Table 1. Related parameters of few-mode fiber
Parameter Core diameter /μm Cladding diameter /μm Cut-off frequency Core refractive index Cladding refractive index
Value 13.938 125 3.71 1.4630 1.4571

Table 2. Mode-coupling between FMFs measured with backscattering method
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Table 2. Mode-coupling between FMFs measured with backscattering method
d/μm δ₁ δ₂ δ₃ C_XT (Present method)
2.0 0.305 0.357 0.498 0.0409(-13.9 dB)
1.5 0.260 0.308 0.568 0.0327(-14.9 dB)

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Weicheng Chen, Guijun Hu, Feng Liu, Cuiguang Chen, Boran Wang. Measurement of Mode Coupling at a Splice Point Between Few-Mode Fiber[J]. Acta Optica Sinica, 2017, 37(12): 1206005

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