• Chinese Optics Letters
  • Vol. 14, Issue 12, 120601 (2016)
Youchao Jiang1、2, Guobin Ren1、2、*, Yudong Lian1、2, Yu Liu1、2, Huaiqing Liu1、2, Haisu Li1、2, Wenhua Ren1、2, Wei Jian1、2, and Shuisheng Jian1、2
Author Affiliations
  • 1Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China
  • 2Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
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    DOI: 10.3788/COL201614.120601 Cite this Article Set citation alerts
    Youchao Jiang, Guobin Ren, Yudong Lian, Yu Liu, Huaiqing Liu, Haisu Li, Wenhua Ren, Wei Jian, Shuisheng Jian. Multilayer-core fiber with a large mode area and a low bending loss[J]. Chinese Optics Letters, 2016, 14(12): 120601 Copy Citation Text show less
    RIP of an MAF with a curved RIP and a trench in the cladding.
    Fig. 1. RIP of an MAF with a curved RIP and a trench in the cladding.
    (a) Uniform high-index layer MLCF with parameters Δ1=0.0021, a1=1 μm, and a2=1 μm. (b) An SIF with core radius 10 μm and Δ=0.00115. (c) A bending loss comparison between MLCF and SIF.
    Fig. 2. (a) Uniform high-index layer MLCF with parameters Δ1=0.0021, a1=1μm, and a2=1μm. (b) An SIF with core radius 10 μm and Δ=0.00115. (c) A bending loss comparison between MLCF and SIF.
    (a) Uniform high-index layer MLCF with parameters Δ1=0.0021, a1=1 μm, and a2=1 μm. (b) A curved RIP MLCF obtained from Eq. (6) with Δ11=0.004. (c) A bending loss comparison between the MLCFs in (a) and (b).
    Fig. 3. (a) Uniform high-index layer MLCF with parameters Δ1=0.0021, a1=1μm, and a2=1μm. (b) A curved RIP MLCF obtained from Eq. (6) with Δ11=0.004. (c) A bending loss comparison between the MLCFs in (a) and (b).
    Bending loss evolution as a function of core-trench separation b with a bending radius of 10 mm at a wavelength of 1550 nm.
    Fig. 4. Bending loss evolution as a function of core-trench separation b with a bending radius of 10 mm at a wavelength of 1550 nm.
    (a) bA evolution as a function of the bending radius. (b) The bending loss evolution as a function of the bending radius, with different bA at 1550 nm [the r in the legend denotes the bending radius in (a)]. (c) The bA evolution as a function of the trench index for different widths.
    Fig. 5. (a) bA evolution as a function of the bending radius. (b) The bending loss evolution as a function of the bending radius, with different bA at 1550 nm [the r in the legend denotes the bending radius in (a)]. (c) The bA evolution as a function of the trench index for different widths.
    Bending loss comparison between the MLCF with a trench and the MLCF without a trench.
    Fig. 6. Bending loss comparison between the MLCF with a trench and the MLCF without a trench.
    RIP of the fabricated fibers. The inset is the micrograph of the MLCF.
    Fig. 7. RIP of the fabricated fibers. The inset is the micrograph of the MLCF.
    Measured dispersion of the fabricated MLCF and SMF-28.
    Fig. 8. Measured dispersion of the fabricated MLCF and SMF-28.
    Spectral bending loss as a function of the bending radius and wavelength.
    Fig. 9. Spectral bending loss as a function of the bending radius and wavelength.
    Comparison of the bending losses between the fabricated MLCF and the SMF-28 fiber at 1310 and 1550 nm. The curves and markers represent the results of the simulation and the measurement, respectively.
    Fig. 10. Comparison of the bending losses between the fabricated MLCF and the SMF-28 fiber at 1310 and 1550 nm. The curves and markers represent the results of the simulation and the measurement, respectively.
    (a) Comparison of the measured and calculated bending loss as a function of the wavelength, with a bending radius of 5 and 10 mm.
    Fig. 11. (a) Comparison of the measured and calculated bending loss as a function of the wavelength, with a bending radius of 5 and 10 mm.
    FibersSMF–28MLCF
    Cutoff Wavelength1295 nm1425 nm
    Dispersion at 1550 nm16.79 ps/(km·nm)19.18 ps/(km·nm)
    MFD (at 1310/1550 nm)8.8/9.8 μm14.4/16.4 μm
    Bending Loss (at 1310 nm, bending radii 5/10 mm)3.34/0.0036 dB/turn2.26/0.16 dB/turn
    Bending Loss (at 1550 nm, bending radii 5/10 mm)24.84/0.39 dB/turn7.12/0.58 dB/turn
    Table 1. Attributes of MLCF and SMF–28 Fiber
    Youchao Jiang, Guobin Ren, Yudong Lian, Yu Liu, Huaiqing Liu, Haisu Li, Wenhua Ren, Wei Jian, Shuisheng Jian. Multilayer-core fiber with a large mode area and a low bending loss[J]. Chinese Optics Letters, 2016, 14(12): 120601
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