发明名称 |
METHOD FOR PRODUCING AND PROCESSING A PREFORM, PREFORM AND OPTICAL FIBER |
摘要 |
The method for producing and processing a preform comprises a preliminary process phase, in which silica grain is supplied into the interior space of a silica tube having an open upper end and a closed lower end, in order to obtain an unprocessed preform, and includes a final process phase, in which the interior space of the silica tube is closed, a condition of reduced pressure is generated, the unprocessed preform is heated with a final process temperature in order to fuse the silica tube and the silica grain. According to the invention the silica grain entering the interior space is thermally treated during the preliminary process phase with an intermediate process temperature that lies under the melting point of the silica grain. |
申请公布号 |
US2011299824(A1) |
申请公布日期 |
2011.12.08 |
申请号 |
US201013148218 |
申请日期 |
2010.02.22 |
申请人 |
SANDOZ FREDERIC;PEDRIDO CARLOS;RIBAUX PHILIPPE;HAMEL PHILIPPE;SILITEC FIBERS SA |
发明人 |
SANDOZ FREDERIC;PEDRIDO CARLOS;RIBAUX PHILIPPE;HAMEL PHILIPPE |
分类号 |
G02B6/10;B29B7/00;C03B37/012;C03B37/027 |
主分类号 |
G02B6/10 |
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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