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

A quartz fiber and anti-radiation technology, which is applied in cladding optical fiber, glass fiber products, optics, etc., can solve the problem of high fiber loss, achieve low transmission loss, improve radiation resistance, and reduce production costs

Inactive Publication Date: 2007-07-18
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.

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

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specific Embodiment approach

[0016] A preferred embodiment of the present invention is described as follows in conjunction with accompanying drawing:

[0017] Referring to Fig. 1, this high-performance anti-radiation silica fiber is composed of a pure silica core 1, an inner cladding 2 and an outer cladding 3, the material of the quartz core 1 is a high-purity quartz material; the material of the inner cladding 2 is pure silica The matrix is ​​doped with 250ppm of fluorine; the material of the outer cladding layer 3 is pure quartz as the matrix doped with 8000ppm of cerium.

[0018] Referring to Fig. 2, the above-mentioned high-performance radiation-resistant silica optical fiber is manufactured by a combined method: using improved vapor deposition (MCVD) or plasma chemical vapor deposition (PCVD), sequentially vapor deposition on the MCVD rod machine or PCVD The prefabricated layer 22 of the inner cladding 2 and the prefabricated core 11 of the pure silica fiber core 1 are made by the same method, and fi...

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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

[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 international research and de...

Claims

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Application Information

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Patent Type & Authority Applications(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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