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Optical fiber preform and method for preparing optical fiber preform and optical fiber

A technology of optical fiber preform and optical fiber, which is applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of complex optical fiber preparation process, and achieve the effects of mature process, controllable refractive index uniformity, and flexible thickness adjustment

Pending Publication Date: 2021-07-16
武汉光谷长盈通计量有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an optical fiber preform and a method for preparing an optical fiber preform and an optical fiber, and solve the problem of complex preparation processes of optical fibers with different refractive indices

Method used

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  • Optical fiber preform and method for preparing optical fiber preform and optical fiber
  • Optical fiber preform and method for preparing optical fiber preform and optical fiber
  • Optical fiber preform and method for preparing optical fiber preform and optical fiber

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Embodiment 1

[0044] like Figure 9 As shown, in this embodiment, flat-core optical fibers and rectangular-core optical fibers are prepared by adjusting the number and thickness of light-transmitting sheets. Under the same size, only a single thicker light-transmitting sheet can realize the preparation of flat-core optical fibers and rectangular-core optical fibers. This embodiment provides prefabricated rods and preparation methods for preparing flat core optical fibers and rectangular core optical fibers.

[0045] An optical fiber preform for preparing flat-core optical fibers and rectangular-core optical fibers, comprising a sleeve 1, the sleeve 1 is a hollow structure, the sleeve 1 is filled with a light-transmitting sheet 2, and the light-transmitting sheet 2 and the sleeve Capillary rods 3 are filled between the tubes 1 . There is one piece of the transparent sheet 2 .

[0046] A method for preparing a flat-core optical fiber, a rectangular-core optical fiber preform, and an optica...

Embodiment 2

[0051] like Figure 10 As shown, in this embodiment, an optical fiber without a refraction step is prepared by increasing the number and thickness of the transparent plates.

[0052] An optical fiber prefabricated rod includes a sleeve 1, the sleeve 1 is a hollow structure, a light-transmitting sheet 2 is filled in the sleeve 1, and capillary rods 3 are filled between the light-transmitting sheet 2 and the sleeve 1. The light-transmitting sheet 2 is provided with multiple pieces, and the thickness of the multiple light-transmitting sheets 2 is different, and the refractive index is the same. The number of transparent sheets 2 is 50, and the thickness of the corresponding transparent sheets 2 is relatively thin under the same fiber core.

[0053]Under the same core size, the more transparent sheets are used, the thinner and smoother each sheet will be, without the refractive index gradient. It is difficult for optical fibers prepared by MCVD equipment commonly used in the opt...

Embodiment 3

[0059] like Figure 11 As shown, in this embodiment, the polarization-maintaining optical fiber is prepared by adjusting the thickness and refractive index of the light-transmitting sheet.

[0060] An optical fiber prefabricated rod includes a sleeve 1, the sleeve 1 is a hollow structure, a light-transmitting sheet 2 is filled in the sleeve 1, and capillary rods 3 are filled between the light-transmitting sheet 2 and the sleeve 1. The light-transmitting sheet 2 is provided with multiple pieces, and the thickness and refractive index of the multiple light-transmitting sheets 2 are different.

[0061] A method for a polarization-maintaining optical fiber preform and an optical fiber, the steps of realizing are:

[0062] S1. Pull one side of the casing into a short cone, clean and dry the material fully, and make multiple light-transmitting sheets gradually decrease in thickness from the middle to both ends, and gradually reduce the refractive index from the middle to both ends....

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Abstract

The invention provides an optical fiber preform and a method for preparing the optical fiber preform and an optical fiber. Light-transmitting sheets with different refractive indexes are inserted into a sleeve in a staggered manner, gaps in the sleeve are filled with capillary rods, the prepared sleeve is subjected to optical fiber drawing to obtain the optical fiber, wherein the light-transmitting sheets are used as fiber cores, and the sleeve is used as a cladding. A new optical fiber structure can be achieved by adjusting the number and the thickness of the glass sheets, the application direction is wide, and the optical fiber can be applied to multiple types of glass materials and is also suitable for light-transmitting polymer materials.

Description

technical field [0001] The invention relates to the field of optical fiber preparation, in particular to an optical fiber preform and a method for preparing an optical fiber preform and an optical fiber. Background technique [0002] The structure of the optical fiber determines the transmission performance of the optical fiber, and a reasonable refractive index distribution can meet the needs of different types of optical fibers. Most of the existing optical fiber preforms are prepared by in-tube chemical vapor deposition methods such as MCVD, PCVD, FCVD and external deposition methods such as OVD and VAD methods. , During the deposition process, the tube and the rod are in the process of uniform rotation, so the preform is circular, and the core area of ​​its light transmission is also circular. The preform is then drawn into an optical fiber. [0003] The fiber core prepared by the above method is generally circular and has a good circular symmetry structure, but in som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/012C03B37/027
CPCC03B37/01211C03B37/027
Inventor 廉正刚余倩卿徐江河谢利华丁凡李长松余妍
Owner 武汉光谷长盈通计量有限公司