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Manufacturing method for multi-core optical fiber preform

A manufacturing method and technology of multi-core optical fiber, applied in manufacturing tools, glass manufacturing equipment, etc., can solve the problems of cumbersome preparation process, unstable mutual interference prevention between core layers, etc., and achieve mature process route, important application value, and easy batch production The effect of chemical production

Inactive Publication Date: 2018-01-19
HENGTONG OPTICAL MATERIAL CO LTD +1
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Problems solved by technology

[0004] Publication No. CN106461859A "Multicore Optical Fiber and Manufacturing Method of Multicore Optical Fiber" provides a preparation method of multicore optical fiber, but the preparation process is cumbersome, and the core layer of the optical fiber is a bare core, and the mutual interference prevention between the core layers is not enough. Stablize

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  • Manufacturing method for multi-core optical fiber preform
  • Manufacturing method for multi-core optical fiber preform
  • Manufacturing method for multi-core optical fiber preform

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Embodiment Construction

[0024] A method of manufacturing a multi-core optical fiber preform, see Figure 1-Figure 3 : Make fiber core 1 and preform cladding layer 2 respectively, fiber core 1 includes core 11 and core cladding layer 12, wherein core 11 is prepared by chemical vapor deposition VAD process and doped with germanium; core cladding layer 12 is prepared by VAD process, Then, the core 11 and the core cladding layer 12 are melted and shrunk to form the fiber core 1, and then the fiber core 1 is inserted into the corresponding deep hole in the preform cladding layer 2.

[0025] In a specific embodiment:

[0026] In the preparation of the fiber core, after depositing the germanium-doped core by VAD, it is assembled and extended with the fluorine-doped cladding to obtain the fiber core, and the diameter of the obtained fiber core is 12mm-14mm;

[0027] The refractive index difference between the germanium-doped core and the fluorine-doped core cladding layer is 0.0070-0.0080;

[0028] The pre...

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Abstract

The invention provides a manufacturing method for a multi-core optical fiber preform. Optical fiber prepared by the manufacturing method contains a plurality of independent fiber cores, so as to greatly improve the transmission capacity of the optical fiber. Meanwhile, the multi-core optical fiber preform is superior to the standard in bending resistance and in-core independent transmission property. The fiber cores and preform cladding are respectively manufactured. Each fiber core comprises a core and core cladding, wherein the core is prepared by a chemical vapor deposition (VAD) process and doped with germanium; the core cladding is prepared by the VAD process and doped with fluorine, sintered, sleeved on a post and then punched; and then the core and the core cladding are melted and shrunk to form the fiber core, and then the fiber core is inserted into a corresponding deep bore of the preform cladding.

Description

technical field [0001] The invention relates to the technical field of optical fiber preform fabrication, in particular to a manufacturing method of a multi-core optical fiber preform. Background technique [0002] With the development of international communication services, especially the higher and higher requirements of Internet technology for transmission speed and capacity, the demand for optical fiber bandwidth in communication systems has shown a rapid growth trend. In long-distance, large-capacity, high-speed transmission communication systems, multiple optical fibers are usually required to achieve large-capacity transmission. In addition, multiple optical fibers are often coated to prevent mutual crosstalk. During the long-distance laying process The cost is higher, and at the same time, there is a higher requirement for the independence of the optical fiber. Therefore, the growth of transmission capacity and distance requires higher fiber insertion power and low...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/012
Inventor 王伟仪劳雪刚和联科沈震强肖华
Owner HENGTONG OPTICAL MATERIAL CO LTD
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