High-bandwidth anti-bending multimode fiber

一种多模光纤、高带宽的技术，应用在光通信领域，能够解决不具有抗弯曲性能、多模光纤无法满足WDM技术应用要求等问题，达到优异抗弯曲性能、带宽-波长敏感性降低、带宽性能优化的效果

Active Publication Date: 2016-02-17
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this multimode fiber cannot meet the application requirements of WDM technology, and does not have bending resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: The optical fiber includes a core layer and a cladding layer. The refractive index profile of the core layer is parabolic, the distribution index α is 2.01, the radius R1 of the core layer is 25.3 μm, and the maximum relative refractive index difference at the center of the core layer is Δ1 max is 0.98%, the core layer is co-doped with germanium and fluorine, and the mass percentage of fluorine content in the core layer is distributed along the radius with a certain value C F 3×10 -3 , the cladding from the inside to the outside is the inner cladding, the sunken cladding and the outer cladding. The radius of the inner cladding R2 is 29.7 μm, and the relative refractive index difference Δ2 is -0.02%. The depressed cladding radius R3 is 35.9 μm, and the relative refractive index difference Δ3 is -0.55%. The structure and performance test results of the obtained optical fiber are shown in Table 1. image 3 is the refractive index profile and F doping amoun...

Embodiment 2

[0042] Embodiment 2: A multimode optical fiber prepared according to the technical solution of the present invention. The optical fiber includes a core layer and a cladding layer. The refractive index profile of the core layer is parabolic, the distribution index α is 2.06, the radius R1 of the core layer is 24.8 μm, and the maximum relative refractive index difference at the center of the core layer is Δ1 max is 1.12%, the core layer is a germanium-fluorine co-doped silica glass layer, and the mass percentage of fluorine content in the core layer is distributed along the radius according to the following formula:

[0043] C F ( r ) = C F , min + C F ′ × r R 1 × ...

Embodiment 3

[0045] Embodiment 3: a multimode optical fiber prepared according to the technical solution of the present invention. The optical fiber includes a core layer and a cladding layer. The refractive index profile of the core layer is parabolic, the distribution index α is 2.09, the radius R1 of the core layer is 25.5 μm, and the maximum relative refractive index difference at the center of the core layer is Δ1 max The core layer is a germanium-fluorine co-doped silica glass layer, and the mass percentage of fluorine content in the core layer is distributed along the radius according to the following formula:

[0046] C F ( r ) = G F , min + C F ′ × r R 1 × ...

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Abstract

The invention relates to a high-bandwidth anti-bending multimode fiber which comprises a core layer and a wrapping layer. The refractive index section of the core layer is a parabola, and the distribution index is alpha. The high-bandwidth anti-bending multimode fiber is characterized in that the radius R1 of the core layer is 23-27 [mu]m, the maximum relative refraction index difference delta 1max of the center of the core layer is 0.9-1.2%, the core layer is a germanium-fluoride co-doped silicon dioxide glass layer, the center of the core layer has the minimum fluorine doping amount, the fluorine content mass percent is , and the fluorine content mass percent of the core layer varies with the radius and is distributed according to a function. The wrapping layer sequentially comprises an inner wrapping layer, a recessed wrapping layer and an outer wrapping layer from inside to outside. The bandwidth-wavelength sensitivity is reduced while the bandwidth performance is improved. The high-bandwidth anti-bending multimode fiber not only can be compatible with an existing OM3 / OM4 multimode fiber, but also can support a wavelength-division multiplexing technology within the wavelength range of 850-950 nm, and the optical fiber transmission capacity is improved effectively. The high-bandwidth anti-bending multimode fiber has excellent bending resistance and can be suitable for an access network and a small optical device.

Description

technical field [0001] The invention relates to a bending-resistant multimode optical fiber with high bandwidth performance, which belongs to the technical field of optical communication. Background technique [0002] According to the description of multimode fiber in the fiber optic product specification standard IEC60793-2 of the International Electrotechnical Commission (IEC), A1 type fiber is multimode fiber, and according to different geometric structures, A1 type fiber is divided into A1a, A1b and A1d kind. Type A1a fiber is 50 / 125 μm graded index fiber, A1b type fiber is 62.5 / 125 μm graded index fiber, A1d type fiber is 100 / 140 μm graded index fiber. Among them, A1a fiber is currently the most widely used type of multimode fiber in commercial use, and it is divided into A1a.1, A1a.2 and A1a.3 fibers according to the bandwidth performance from small to large, corresponding to the composition of the ISO / IEC standard. Cable fiber types OM2, OM3 and OM4. [0003] With ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G02B6/036
CPCG02B6/0288G02B6/03627G02B6/0281G02B6/03638G02B6/028G02B6/036G02B6/02009G02B6/02071G02B6/02085G02B6/021H04J14/0278
Inventor 王润涵黄荣王海鹰王瑞春龙胜亚
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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