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Dispersion compensating fiber with high dispersion factor

A dispersion compensation fiber, high dispersion technology, applied in cladding fiber, transmission system, optical waveguide light guide, etc., can solve the problems of complex fiber waveguide structure design and difficult process, and achieve high-speed, large-capacity system transmission. Effect

Active Publication Date: 2009-08-05
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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Problems solved by technology

In this way, the design of the waveguide structure of the fiber is more complicated and the process is more difficult.

Method used

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  • Dispersion compensating fiber with high dispersion factor
  • Dispersion compensating fiber with high dispersion factor
  • Dispersion compensating fiber with high dispersion factor

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Embodiment Construction

[0026] For the optical fiber in the present invention all have and figure 1 With similar refractive index profile structures, optical fibers with different performance parameters can be obtained by changing the parameters of the refractive index profile. Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0027] In the first embodiment, four layers of the core region are doped regions, and the radii of each core layer from r1 to r4 are: 1.455 μm, 4.850 μm, 7.320 μm, and 10.955 μm. where the r2 / r1 value is 3.33. The cladding layer r5 has a radius of 53.900 μm. The relative refractive index difference of each core layer is 1.84%, -1.01%, 0.51%, -0.09% from Δ1% to Δ4%. Cladding delamination Δ5% pure SiO 2 Glass refractive index. Between each layer, especially between the first layer and the second layer, a refractive index distribution gradient is set for a smooth transition. The dispersion coefficient of th...

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Abstract

The invention relates to a dispersion compensation fiber with high dispersion coefficient used for carrying out dispersion compensation on a C wave band. The invention comprises a fiber core and a cladding; wherein, the fiber core comprises at least four fiber core sub-layers; the refringencey ranges of the four fiber core sub-layers from delta 1% to delta 4% are successively as follows: 1.80% to 2.20%, -1.20% to -0.95%, 0.40% to 0.70% and -0.01% to -0.15%; the ranges of the radiuses from r1 to r4 are successively as follows: 1.300 mu m to 1.520 mu m, 4.500 mu m to 5.200 mu m, 6.000 mu m to 7.500 mu m, and 10.000 mu m to 62.500 mu m. The invention has high negative dispersion and negative dispersion slope coefficient in an optical communication window on the C wave band; the dispersion compensation fiber is especially suitable for carrying out dispersion compensation to a high-speed DWDM system based on a G.655 fiber, thus upgrading the optical communication system working in the window on the C wave band; the optical fiber can be easily inserted in a communication link to meet the demand of the transportation of a high-speed and large-capacity system, and the miniaturization of the dispersion compensation module can be easily realized.

Description

technical field [0001] The invention relates to a dispersion compensation single-mode optical fiber with high negative dispersion and negative dispersion slope in the C-band (1525nm-1565nm band) optical communication window, the optical fiber can be used for non-zero dispersion shifted single-mode optical fiber (G.655, ITU -T standard) dispersion and dispersion slope compensation, and has lower attenuation and PMD values. Background technique [0002] With the widespread adoption of the DWDM system of G.655 fiber and the development towards the direction of high speed, long distance, no relay and dense channels, the dispersion compensation of the fiber is becoming more and more important. At present, the most widely used is to use dispersion compensation fiber to compensate the dispersion of the communication link. The DWDM system requires a specific length of fiber specially used for dispersion compensation to be inserted into the fiber link, and at the same time compensate...

Claims

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Application Information

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IPC IPC(8): G02B6/02H04B10/18H04B10/2525
Inventor 罗杰魏红波曹宇青曹蓓蓓
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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