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High-performance anti-radiation quartz optical fiber and making method thereof

A technology of quartz optical fiber and manufacturing method, which is applied in cladding optical fiber, glass fiber products, optics, etc., can solve the problem of high optical fiber loss, achieve the effects of low transmission loss, improved radiation resistance, and simple structure

Inactive Publication Date: 2008-02-13
JIANGSU XINYE HEAVY IND
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Problems solved by technology

(2) Add 5-10ppm low OH to the quartz core material - , and doping 200ppm of fluorine will improve the radiation resistance of the fiber. This fiber is suitable for the transmission of vacuum and deep ultraviolet light, but it will also have higher loss than conventional germanium-doped fiber in the near-infrared communication band.

Method used

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  • High-performance anti-radiation quartz optical fiber and making method thereof

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Embodiment Construction

[0015] A preferred embodiment of the present invention is described as follows in conjunction with accompanying drawing:

[0016] Referring to Fig. 1, this high-performance radiation-resistant silica fiber is composed of a core 1, an inner cladding 2 and an outer cladding 3. The material of the core 1 is a high-purity quartz material; the material of the inner cladding 2 is pure silica as a matrix doped Doped with 250ppm of fluorine; the material of the outer cladding 3 is pure quartz as the matrix doped with 6000ppm of cerium.

[0017] The above-mentioned high-performance radiation-resistant silica optical fiber is directly made of the outer cladding 3, the inner cladding 2 and the fiber core 1 by vapor deposition method (MCVD) on the MCVD rod making machine in sequence, and finally the rod is shrunk to form an optical fiber preform, and then Then it is drawn to make an optical fiber. The above-mentioned high-performance radiation-resistant silica optical fiber can also be d...

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Abstract

The invention relates to a high-performance anti-radiation silicon fiber comprised of pure silicon fiber core, pure silicon doping fluorine inner enveloping layer and pure silicon doping cerium surround, Which is prepared by drawing the fiber preformed rod made by MVCD or OVD technique. This invention has strong anti-radiation capacity and low transmission loss to fit to lots of application.

Description

technical field [0001] The invention relates to a silica optical fiber and a manufacturing method thereof, in particular to a high-performance radiation-resistant silica optical fiber and a manufacturing method thereof, belonging to the technical field of optical fibers. Background technique [0002] Optical fibers are more and more widely used in radiation-related fields such as aerospace, nuclear industry, and military. In particular, whether optical fibers can communicate normally in a radiation environment is particularly important to the military. However, the conventional core germanium-doped silica fiber, due to the obvious increase in transmission loss in the radiation state, such as at 3×10 3 Under Gy and 3.5 hours of γ-ray irradiation, the single-mode fiber has a radiation induction loss of about 30dB / km, so it is not suitable for applications in these fields. For this reason, the development of radiation-resistant optical fiber has become a hot spot in internatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02G02B1/00C03B37/018
CPCC03B2201/02C03B2201/12C03B37/01413C03B2203/23C03B37/01807C03B2201/34Y02P40/57
Inventor 王廷云陈振宜
Owner JIANGSU XINYE HEAVY IND
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