发明名称 |
OPTICAL FIBER MANUFACTURING METHOD AND OPTICAL FIBER |
摘要 |
There is provided a method for producing a low-loss alkali metal-doped silica core optical fiber having excellent hydrogen resistance. The method for producing the optical fiber according to the present invention includes a drawing step of drawing an optical fiber preform in a drawing furnace to produce a silica glass-based optical fiber including a core region containing an alkali metal with an average concentration of 0.5 atomic ppm or more and a cladding region that surrounds the core region and a heating step of heating the optical fiber in a heating furnace through which the optical fiber drawn from the drawing furnace passes. |
申请公布号 |
US2015329405(A1) |
申请公布日期 |
2015.11.19 |
申请号 |
US201314651483 |
申请日期 |
2013.12.11 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
HARUNA Tetsuya;HIRANO Masaaki;TAMURA Yoshiaki;NAKANISHI Tetsuya |
分类号 |
C03B37/027;G02B6/02 |
主分类号 |
C03B37/027 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method for producing an optical fiber, comprising:
a drawing step of drawing an optical fiber preform in a drawing furnace to produce a silica glass-based optical fiber including a core region containing an alkali metal with an average concentration of 0.5 atomic ppm or more and a cladding region that surrounds the core region; and a heating step of heating the optical fiber in a heating furnace through which the optical fiber drawn from the drawing furnace passes. |
地址 |
Osaka-shi, Osaka JP |