MANUFACTURING DEVICE AND MANUFACTURING METHOD FOR OPTICAL FIBER PREFORM ROD

WIPO Patent Application WO/2017/181649

A1

A manufacturing device and a manufacturing method for an optical fiber preform rod. The manufacturing device comprises: a sintering furnace (11) for oxidization and dehydration, a central pipe (12) located in the sintering furnace (11), at least one heating element (5) located in the sintering furnace (11) and located outside of the central pipe (12), a SiO2 blank (10) located in the central pipe, a sealing cover (14) for sealing the central pipe (12), an inner cavity (12) located in the central pipe (12), an outer cavity (15) located outside of the central pipe (12) and located in the sintering furnace, a first vacuum exhaust pipe (2) and a first gas pipe (9) connected to the outer cavity (15), a second vacuum exhaust pipe (7) and a second gas pipe (4) connected to the sintering furnace, the heating element, the SiO2 blank, and the sealing cover all being located in the sintering furnace.

JPH03115136	OPTICAL FIBER PREFORM AND ITS PRODUCTION
JPS60257408	OPTICAL FIBER AND ITS PRODUCTION
JPS60210541	PRODUCTION OF BASE MATERIAL FOR OPTICAL FIBER

ZHAO FENGKUO (CN)
TIAN GUOCAI (CN)
TU JIANBIN (CN)
NIU XIAOPING (CN)
QIAN LIANG (CN)

PCT/CN2016/104312

October 26, 2017

November 02, 2016

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HENGTONG OPTICAL MAT CO LTD (CN)

C03B37/018

CN205616787U	2016-10-05
CN105669019A	2016-06-15
US20020029592A1	2002-03-14
CN86100210A	1986-09-10
CN102933511A	2013-02-13
JPH06127964A	1994-05-10
JPS6096536A	1985-05-30

BEIJING KEYI INTELLECTUAL PROPERTY FIRM (CN)

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