发明名称 |
OPTICAL FIBER DRAWING METHODS AND DRAWING FURNACES |
摘要 |
Drawing methods and drawing furnaces for drawing an optical fiber with small non-circularity by simple drawing system are provided. An optical fiber preform is received into a muffle tube and heated by a primary heater placed to surround the muffle tube. The optical fiber preform is heated such that a starting position of a meniscus portion is higher in its position than the top of the primary heater, wherein the meniscus portion is created at the bottom portion of the optical fiber preform. |
申请公布号 |
US2012192594(A1) |
申请公布日期 |
2012.08.02 |
申请号 |
US201213411121 |
申请日期 |
2012.03.02 |
申请人 |
ORITA NOBUAKI;SUZUKI TAKASHI;SAKATA YOSHIYUKI;FURUKAWA ELECTRIC COL, LTD. |
发明人 |
ORITA NOBUAKI;SUZUKI TAKASHI;SAKATA YOSHIYUKI |
分类号 |
C03B37/029 |
主分类号 |
C03B37/029 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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