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

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

Active Publication Date: 2007-05-30
BANDWEAVER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

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Embodiment 1

[0051] Please refer to Fig. 1, Fig. 1 is the optical fiber refractive index profile curve of Embodiment 1 of the single-mode optical fiber used in the ultra-long-distance optical fiber transmission network of the present invention. As can be seen from Fig. 1, the section of the single-mode optical fiber used for the ultra-long-distance optical fiber transmission network of the present invention is the central region, the first cladding layer and the second cladding layer successively from the inside to the outside, and the refractive index profiles in each region are distributed as follows: : The refractive index distribution in the central area is an α distribution, the second cladding layer is a refractive index depression, and the third cladding layer is a refractive index raised ring:

[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 ma...

Embodiment 2

[0057] Fig. 2 is the optical fiber refractive index profile curve of Embodiment 2 of 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 second cladding layer is a refractive index depression, and the third 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 relativ...

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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 Applications(China)
IPC IPC(8): G02B6/02
Inventor 刘燕明赵浩
Owner BANDWEAVER TECH CO LTD