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 (1p, 1s) comprises a preliminary process phase, in which silica grain (5a; 5b) is supplied into the interior space (110) of a silica tube (11) having an open upper end and a closed lower end (111), in order to obtain an unprocessed preform (1p, 1s ), and comprises a final process phase, in which the interior space (110) of the silica tube (11) is closed, a condition of reduced pressure is generated, the unprocessed preform (1p, 1s ) is heated with a final process temperature in order to fuse the silica tube (11) and the silica grain (5b). According to the invention the silica grain (5a; 5b) entering the interior space (110) 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 |
WO2010094803(A1) |
申请公布日期 |
2010.08.26 |
申请号 |
WO2010EP52220 |
申请日期 |
2010.02.22 |
申请人 |
SILITEC FIBERS SA;SANDOZ, FREDERIC;PEDRIDO, CARLOS;RIBAUX, PHILIPPE;HAMEL, PHILIPPE |
发明人 |
SANDOZ, FREDERIC;PEDRIDO, CARLOS;RIBAUX, PHILIPPE;HAMEL, PHILIPPE |
分类号 |
C03B37/012;C03B37/027 |
主分类号 |
C03B37/012 |
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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