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Single-mode optical fiber used for overlength distance fiber transit network

A single-mode optical fiber and optical fiber transmission technology, which is applied in cladding optical fiber, optical waveguide and light guide, etc., can solve problems affecting long-distance network requirements, and achieve optimized optical fiber Raman gain performance, large effective area, and low unit bit cost. Effect

Active Publication Date: 2008-11-12
BANDWEAVER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, these existing long-distance optical fibers cannot meet all the development requirements of new long-distance transmission technologies, such as Raman expansion, forward error correction and new modulation modes for ultra-long-distance transmission, which have been developed. These technologies will affect the requirements of the new generation of long-distance networks

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  • Single-mode optical fiber used for overlength distance fiber transit network
  • Single-mode optical fiber used for overlength distance fiber transit network
  • Single-mode optical fiber used for overlength distance fiber transit network

Examples

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Effect test

Embodiment 1

[0051] please see figure 1 , figure 1 It is the optical fiber refractive index profile curve of Example 1 in the single-mode optical fiber used in the ultra-long-distance optical fiber transmission network of the present invention. Depend on figure 1 It can be seen that the profile of the single-mode optical fiber used in the ultra-long-distance optical fiber transmission network of the present invention is the central area, the first cladding layer and the second cladding layer in sequence from the inside to the outside, and the distribution of the refractive index profile of each area is: the central area The index profile of is an α profile, the first cladding is an index depression, and the second cladding is an index-elevating annulus:

[0052] The radius r of the central zone of the fiber 0 is 4.3μm, the outer radius r of the first cladding 1 is 7.5μm, the outer radius r of the second cladding 2 11.5 μm;

[0053] The maximum relative refractive index Δ of the centr...

Embodiment 2

[0057] figure 2 It is the optical fiber refractive index profile curve of Example 2 in the single-mode optical fiber used in the ultra-long-distance optical fiber transmission network of the present invention. As can be seen from the figure, for the single-mode optical fiber used in the ultra-long-distance optical fiber transmission network of the present invention, the cross-section of the optical fiber is the central region, the first cladding and the second cladding successively from the inside to the outside, and the refractive index profiles of each region The distribution is: the refractive index distribution in the central area is an α distribution, the first cladding layer is a refractive index depression, and the second cladding layer is a refractive index raised ring:

[0058] The radius r of the central zone of the fiber 0 is 4.5 μm, the outer radius r of the first cladding 1 is 6.6μm, the outer radius r of the second cladding 2 9.8 μm;

[0059] The maximum rel...

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Abstract

The invention relates to a monomode optical fiber whch is used for the super long distance transmission of optical fiber transit network. The section of optical fiber ento-ectad are central layer, first cladding and second cladding, the distribution of refractivity section in every area are: the distribution of refractivity is alpha distribution, the second cladding is refractivity recession, and the third cladding is refractivity epipodium, the effective area of fiber core of monomode optical fiber is bigger than 50 mum2, the dispersion coefficient at 1550nm wave length is 6-10ps / nm.Km, there is flat dispersion rate between the wave length from 1450nm to 1650nm, the polarization chromatic dispersion <=0.2ps / nm1 / 2. The monomode optical fiber of long distance transmission of optical fiber transit network can provide 4Tb / s bandwidth at most, and the cost of bit is low. It can be widely used for long and super long distance optical signal transmission or local net.

Description

technical field [0001] The invention relates to an optical fiber, in particular to a single-mode optical fiber used in an ultra-long-distance optical fiber transmission network. technical background [0002] In the field of communication transmission, the new optical network service automatic switching optical network and multi-service providing platform drive the super-distance and dense wavelength division technology system to become the main development direction of optical communication. [0003] In the initial stage when the concept of the automatic switching optical network was proposed, some people understood the automatic switching optical network as an optical transport network plus a control plane. The advantages of free wavelength scheduling in ASON can only be finally reflected in the real full wavelength division multiplexing technology system. The control plane of ASON is very sensitive to services, so the optional routes of services are also volatile. Therefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02
Inventor 刘燕明赵浩
Owner BANDWEAVER TECH CO LTD