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A low-loss large effective area single-mode optical fiber and its manufacturing method

A single-mode fiber, effective area technology, used in cladding fibers, manufacturing tools, glass manufacturing equipment, etc., can solve the problems of increasing process complexity and manufacturing cost, and achieve the effect of low loss and large effective area

Active Publication Date: 2017-01-18
ZHONGTIAN TECH ADVANCED MATERIALS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is very difficult to implement this design directly on OVD or VAD equipment. Usually, PCVD, POD outsourcing or fluorine-doped casing technology are used, which greatly increases the process complexity and manufacturing cost.

Method used

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  • A low-loss large effective area single-mode optical fiber and its manufacturing method
  • A low-loss large effective area single-mode optical fiber and its manufacturing method
  • A low-loss large effective area single-mode optical fiber and its manufacturing method

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Embodiment Construction

[0062] refer to Figure 1A and Figure 1B , the fiber consists of 4 parts from the center to the outside:

[0063] 1) Core region 11: the radius extending outward from the center is R 1 . The main doping component is germanium, and there may also be a small amount of fluorine. R 1 The range is 4μm~9μm; its typical value is 5.7μm~8.2μm. The refractive index difference in the core area and the fiber radius r have the following relationship:

[0064] . (0≤r1 )

[0065] where δn(0) is the refractive index difference at the center of the fiber, and its range is 2.2x10 -3 ~5.8x10 -3 , the typical value is 2.6x10 -3 ~5.3x10 -3 . In order to make the fiber attenuation below 0.185dB / km at 1550nm, δn(0) must be below 4.5x10 -3 , preferably need to be lower than 4.0x10 -3 . δn(R 1 ) is the refractive index difference at the edge of the core region, δn(R 1 )-3 ~-0.5x10 -3. α is the distribution power of the fiber core, and its range is α≥1.5.

[0066] Central depress...

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Abstract

The invention relates to a low-loss large-effective-area single-mode optical fiber and a manufacturing method of the low-loss large-effective-area single-mode optical fiber. The optical fiber has the advantages that loss is low, the effective area is large, and optical fiber parameters are not sensitive to geometric dimensioning of a groove area or refractive index change of the groove area. The optical fiber is suitable for mass production of various processes due to the design. According to the low-loss large-effective-area single-mode optical fiber, the effective area ranges from 100 square microns to 185 square microns at the wavelength of 1550 nm, and the cutoff wavelength is smaller than 1530 nm. The optical fiber sequentially comprises a fiber core area, an isolation area, the groove area and an external wrapping area outward from the center. The optical fiber is suitable for long-distance optical communication of a working window within the wavelength range of 1550 nm or larger. The optical fiber has the advantages that loss is low, the effective area is large, and the main parameters are not sensitive to the geometric dimensioning of the groove area or the refractive index change of the groove area. The optical fiber is suitable for mass production of various processes.

Description

technical field [0001] The invention relates to a single-mode optical fiber with low loss and large effective area and a manufacturing method thereof. The optical fiber has the advantages of low loss, large effective area, and insensitive optical fiber parameters to geometric dimensions and refractive index changes in the trench area. The fiber design is suitable for mass production in various processes. Background technique [0002] In 100G / s and higher-speed long-distance optical communication systems, the deterioration of signal-to-noise ratio and the nonlinear effect of optical fibers will be the main factors restricting the communication distance. Increasing the effective area of ​​the fiber, reducing the loss of the fiber, and improving the dispersion of the fiber are the main ways to overcome these two constraints. Reducing fiber loss can slow the rate at which the signal-to-noise ratio deteriorates, but does nothing to reduce nonlinear effects. Increasing the effec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/036G02B6/02C03B37/018
Inventor 蒋新力周慧陈金文徐希凯钱本华
Owner ZHONGTIAN TECH ADVANCED MATERIALS CO LTD
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