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Optical fibre with ultralarge effective area, low dispersion gradient and non-zero dispersion displacement

A technology with effective area and non-zero dispersion, applied in the direction of light guides, optics, optical components, etc., can solve the problems of increasing the difficulty of dispersion compensation, and achieve the effects of low intrinsic transmission loss, good bending resistance, and low PMD performance

Inactive Publication Date: 2005-05-25
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the dispersion slope of traditional non-zero dispersion-shifted fiber is usually around 0.085, a higher dispersion slope increases the difficulty of dispersion compensation

Method used

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  • Optical fibre with ultralarge effective area, low dispersion gradient and non-zero dispersion displacement
  • Optical fibre with ultralarge effective area, low dispersion gradient and non-zero dispersion displacement
  • Optical fibre with ultralarge effective area, low dispersion gradient and non-zero dispersion displacement

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Embodiment Construction

[0044] The following is a detailed description of each embodiment with reference to the accompanying drawings.

[0045] The optical fiber core refractive index profile structure in the first embodiment of the present invention is as follows figure 1 As shown, where the ordinate corresponds to the central axis of the fiber core. The fiber core structure consists of five layers. Area 16 is the fiber cladding, and the central area 11 is the first core layer, relative to the relative refractive index of the fiber cladding Δn1, the distance from the outer edge of the layer to the axis, that is, the radius of the layer is r1; area 12 For the second core layer, the relative refractive index of the cladding layer is Δn2, and the distance between the outer edge of the layer and the axis is r2; the region 13 is the third core layering layer, and the relative refractive index of the cladding layer is Δn3, the distance between the outer edge of the layer and the axis is r3; area 14 is t...

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Abstract

The invention refers to a super-large effective area, low-dispersive gradient, nonzero dispersive displacement optical fiber, including a fiber core and an envelope, its characters: at the 1550 nm wavelength, the effective area of the fiber core >95 micron m2, the dispersive gradient Ds<0.065ps / nm2 / km, the dispersive value D=8-10 ps / nm / km, and the zero dispersive wavelength moves below 1430 nm. In the wave-guide structure, the lamination of the fiber core can be 5 or 4. The optical fiber has low PMD performance, good anti-bending performance and relatively low intrinsic transmission loss, reduces the difficulty in the dispersive compensation for the traditional optical fiber, and especially can effectively reduce the signal distortion due to nonlinear during the course of high-speed largecapacity transmission, which makes it adapt to the S, C and L wave band.

Description

technical field [0001] The invention relates to a non-zero dispersion shifted optical fiber. While maintaining good intrinsic attenuation and bending resistance higher than the standard requirements, the optical fiber has a large effective area, low dispersion slope and low polarization mode dispersion (PMD), and is suitable for applications including large-capacity, high-speed long-distance trunk networks and MAN. Background technique [0002] The dispersion and attenuation of optical fiber are considered to be the restrictive factors that limit the transmission distance of optical fiber. However, with the rapid development of optical fiber transmission technology, especially with the development of erbium-doped optical fiber amplifier and wavelength division multiplexing (WDM) technology in the mid-1990s The commercial, high-capacity, high-speed transmission system puts forward new requirements for the development of optical fiber. For wavelength division multiplexing te...

Claims

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Application Information

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IPC IPC(8): H04B10/2525
Inventor 蒋晓强王瑞春张树强
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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