发明名称 |
Increasing the cladding-to-core ratio (D/d) of low D/d ratio core rods in optical fiber performs |
摘要 |
An optical fiber preform is fabricated by inserting a number of core body pieces end-to-end inside a glass cylinder, wherein the pieces may have a cladding-to-core diameter (D/d) ratio within the range of one to four. The cylinder with the inserted core body pieces is mounted vertically on a furnace and heated so that the cylinder becomes elongated and its outside diameter collapses to form a core rod from which core rod sections with D/d ratios greater than five, can be cut. A soot overcladding is deposited on the circumference of a core rod section until the diameter of the deposited soot builds to a determined value. The core rod section with the deposited soot overcladding is consolidated to obtain a finished optical fiber preform. The preform preferably has a D/d ratio of about 15 or more, and an optical fiber may be drawn directly from the preform.
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申请公布号 |
US7836728(B2) |
申请公布日期 |
2010.11.23 |
申请号 |
US20070801365 |
申请日期 |
2007.05.09 |
申请人 |
OFS FITEL, LLC |
发明人 |
BARISH ERIC L.;FLETCHER, III JOSEPH P.;WU FENGQING |
分类号 |
C03B37/01;C03B37/012;C03B37/02 |
主分类号 |
C03B37/01 |
代理机构 |
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主权项 |
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地址 |
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