Multilayer-core fiber with a large mode area and a low bending loss

Youchao Jiang; Guobin Ren; Yudong Lian; Yu Liu; Huaiqing Liu; Haisu Li; Wenhua Ren; Wei Jian; Shuisheng Jian

doi:doi:10.3788/COL201614.120601

Chinese Optics Letters, 2016, 14 (12): 120601, Published Online: Aug. 2, 2018

Multilayer-core fiber with a large mode area and a low bending loss

Youchao Jiang ^1,2Guobin Ren ^1,2,*Yudong Lian ^1,2Yu Liu ^1,2Huaiqing Liu ^1,2Haisu Li ^1,2Wenhua Ren ^1,2Wei Jian ^1,2Shuisheng Jian ^1,2

Author Affiliations

¹ Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China

² Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China

Figures & Tables

Fig. 1. RIP of an MAF with a curved RIP and a trench in the cladding.

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Fig. 2. (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.

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Fig. 3. (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).

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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.

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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.

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Fig. 6. Bending loss comparison between the MLCF with a trench and the MLCF without a trench.

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Fig. 7. RIP of the fabricated fibers. The inset is the micrograph of the MLCF.

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Fig. 8. Measured dispersion of the fabricated MLCF and SMF-28.

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Fig. 9. Spectral bending loss as a function of the bending radius and wavelength.

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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.

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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.

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Table1. Attributes of MLCF and SMF–28 Fiber

Fibers	SMF–28	MLCF
Cutoff Wavelength	1295 nm	1425 nm
Dispersion at 1550 nm	16.79 ps/(km·nm)	19.18 ps/(km·nm)
MFD (at 1310/1550 nm)	8.8/9.8 μm	14.4/16.4 μm
Bending Loss (at 1310 nm, bending radii 5/10 mm)	3.34/0.0036 dB/turn	2.26/0.16 dB/turn
Bending Loss (at 1550 nm, bending radii 5/10 mm)	24.84/0.39 dB/turn	7.12/0.58 dB/turn

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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.

Multilayer-core fiber with a large mode area and a low bending loss

Fig. 1. RIP of an MAF with a curved RIP and a trench in the cladding.

Fig. 2. (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. 3. (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. 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.

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.

Fig. 6. Bending loss comparison between the MLCF with a trench and the MLCF without a trench.

Fig. 7. RIP of the fabricated fibers. The inset is the micrograph of the MLCF.

Fig. 8. Measured dispersion of the fabricated MLCF and SMF-28.

Fig. 9. Spectral bending loss as a function of the bending radius and wavelength.

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.

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.

Table1. Attributes of MLCF and SMF–28 Fiber

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Multilayer-core fiber with a large mode area and a low bending loss

Fig. 1. RIP of an MAF with a curved RIP and a trench in the cladding.

Fig. 2. (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. 3. (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. 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.

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.

Fig. 6. Bending loss comparison between the MLCF with a trench and the MLCF without a trench.

Fig. 7. RIP of the fabricated fibers. The inset is the micrograph of the MLCF.

Fig. 8. Measured dispersion of the fabricated MLCF and SMF-28.

Fig. 9. Spectral bending loss as a function of the bending radius and wavelength.

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.

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.

Table1. Attributes of MLCF and SMF–28 Fiber

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