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High-capacity low-slope dispersion displacement sigle-mode optical fibre for transmission

A dispersion-shifted, single-mode fiber technology, applied in clad fibers, multi-layer core/clad fibers, light guides, etc. The effect of large dispersion slope, balanced dispersion and low attenuation

Inactive Publication Date: 2003-06-18
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a wavelength division multiplexing system, if the dispersion slope of the transmission line is large, the difference in dispersion value between wavelengths becomes large, and the overall transmission characteristics will deteriorate

Method used

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  • High-capacity low-slope dispersion displacement sigle-mode optical fibre for transmission
  • High-capacity low-slope dispersion displacement sigle-mode optical fibre for transmission
  • High-capacity low-slope dispersion displacement sigle-mode optical fibre for transmission

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: listed below is figure 1 A set of relative refractive index difference distribution parameters is shown, the parameters of each layer of the core are: the parameters of the first core layer Core1 are: ΔCore1% is about 0.64, ΦCore1 is about 3.0 μm, and the second core layer Core2 The parameters of ΔCore2% are about 0.42, ΦCore2 is about 4.1μm The parameters of the third core layer Core3 are: ΔCore3% is about 0.21, ΦCore3 is about 7.5μm The parameters of the fourth fiber core layer Core4 are: ΔCore4% About 0.15, ΦCore4 is about 9.0 μm The parameters of each cladding layer are: The parameters of the first cladding layer Clad1 are: ΔClad1% is about 0.04, ΦClad1 is about 15.0 μm The parameters of the second cladding layer Clad2 are : ΔC1ad2% is about 0.25, ΦClad2 is about 21.0 μm The parameter of the third cladding layer Clad3 is: ΔClad3% is about 0.04, ΦClad3 is about 27.0 μm The parameter of the fourth cladding layer Clad4 is: ΔClad4% is about 0.02 , ΦClad4 ...

Embodiment 2

[0029] The characteristic of the optical fiber described in embodiment 1 has a dispersion slope less than 0.055ps / nm at 1550nm 2 kn, the zero-dispersion wavelength is moved out of the S-band, and the attenuation and bending performance are excellent. After the cable is formed, the cut-off wavelength drops by 200 to 400 nanometers. The optical fiber can meet the needs of dense wavelength division multiplexing transmission in the S+C+L band. . Embodiment 2: listed below is figure 2 A set of relative refractive index difference distribution parameters is shown, the parameters of each layer of the core are: the parameters of the first core layer Core1 are: ΔCore1% is about 0.42, ΦCore1 is about 4.6 μm, and the second core layer Core2 The parameters are: ΔCore2% is about 0.35, ΦCore2 is about 6.0 μm The parameters of the third core layer Core3 are: ΔCore3% is about 0.28, ΦCore3 is about 7.1 μm The parameters of each layer of the cladding are: the first cladding The parameters of...

Embodiment 3

[0031] Embodiment 3: listed below is image 3 A set of distribution parameters of relative refractive index difference is shown, which is a structure in which the relative refractive index difference of two layers in the cladding layer is negative. The parameters of each layer of the fiber core are: The parameters of the first fiber core layer Core1 are: ΔCore1% is about 0.42, ΦCore1 is about 4.6 μm The parameters of the second fiber core layer Core2 are: ΔCore2% is about 0.35, ΦCore2 is about 0.35, ΦCore2 is about The parameters of the third core layer Core3 are 6.0 μm: ΔCore3% is about 0.28, and ΦCore3 is about 7.1 μm. The parameters of each layer of the cladding layer are: the parameters of the first cladding layer Clad1 are: ΔClad1% is about - 0.08, ΦClad1 is about 12.5μm The parameter of the second cladding layer Clad2 is: ΔClad2% is about 0.18, ΦClad2 is about 18.1μm The parameter of the third cladding layer Clad3 is: ΔClad3% is about -0.08, ΦClad3 is about The 29.0 μm ...

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Abstract

The present invention relates to a single module transmitting optic fiber with large capacity and low slope of chromatic dispersion. The fiber includes a core and a coating, characterized in that the core has 3-5 core layers with different distributions of refraction index, the coating has 4-6 coating sub-layers. The general slope of chromatic dispersion of the optic fibers at 1550 nm is less than 0.060 ps / nm2.km, the wavelength with zero chromatic dispersion is less than 1420 nm, the effective area is between 55-65 micron m2, the chromatic dispersion in the range of 1530-1565 nm is between 5.0-12.0 ps / nm2.km. The present invention has the advantages of low slope chromatic dispersion, moderate amount of chromatic dispersion, low attenuation, and excellent bend resistance properties.

Description

technical field [0001] The present invention relates to a single-mode optical fiber designed for large-capacity transmission systems. The single-mode optical fiber has low dispersion slope, moderate dispersion, low attenuation and excellent bending resistance. It is suitable for high-speed (10Gbit / S and 40Gbit / S), large-capacity, and long-distance DWDM systems. The S-C-L band of this fiber can be used for DWDM transmission. Background technique [0002] Since the mid-1990s, with the development of erbium-doped fiber amplifiers and wavelength division multiplexing technology, optical fiber communication has entered an unprecedented high-speed development stage. The capacity of optical fiber communication doubles every year. At present, the rate of commercial transmission systems has reached 10Gbit / S, and the capacity has reached the level of 1.6T. When the transmission rate exceeds 2.5Gbit / S, and with the practicality of optical fiber amplifiers, disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/036
CPCG02B6/02009G02B6/03688G02B6/02242
Inventor 张树强韩庆荣曹宇青王铁军拉吉·马泰罗杰
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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