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High-property anti-radiation quartz optical fibre and manufacturing process of combined method

A quartz fiber, radiation-resistant technology, used in cladding fibers, glass fiber products, optics, etc., can solve the problem of high fiber loss, achieve low transmission loss, reduce production costs, and improve radiation resistance.

Inactive Publication Date: 2008-04-23
JIANGSU TONGHAI THREAD
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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-property anti-radiation quartz optical fibre and manufacturing process of combined method
  • High-property anti-radiation quartz optical fibre and manufacturing process of combined method

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Embodiment Construction

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

[0016] see figure 1 , the high-performance anti-radiation silica fiber, which is composed of pure silica core 1, inner cladding 2 and outer cladding 3, the material of the quartz core 1 is high-purity quartz material; the material of the inner cladding 2 is pure silica as the matrix doped Doped with 250ppm of fluorine; the material of the outer cladding 3 is pure quartz as the matrix doped with 8000ppm of cerium.

[0017] see figure 2 , the above-mentioned high-performance radiation-resistant silica optical fiber adopts a combined method of manufacturing: using a modified gas phase deposition method (MCVD) or a plasma chemical vapor phase deposition method (PCVD), it is sequentially made by gas phase deposition on an MCVD rod making machine or PCVD The prefabricated layer 22 of the inner cladding 2 and the prefabricated core 11 of the pure silica core 1...

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Abstract

A method for preparing quartz optical fiber of high-property and radio-resistance type includes preparing primary prefabricated bar with internal cladding layer and core first, then applying different technique to prepare external cladding layer doped with cerium and finally carrying out wiredrawing process on prepared primary prefabricated bar and prepared external layer to form quartz optical fiber.

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
CPCC03B2201/02C03B2201/12C03B2203/23C03B37/01807C03B2201/34Y02P40/57
Inventor 陈振宜王廷云
Owner JIANGSU TONGHAI THREAD
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