发明授权
US4389230A Process for improving the transmission characteristics of optical fibers
drawn from preforms made by the MCVD technique
失效
用于改善由MCVD技术制成的预成型件拉制的光纤的传输特性的方法
- 专利标题： Process for improving the transmission characteristics of optical fibers drawn from preforms made by the MCVD technique
- 专利标题（中）： 用于改善由MCVD技术制成的预成型件拉制的光纤的传输特性的方法
-
申请号： US273423申请日： 1981-06-15
-
公开(公告)号： US4389230A公开(公告)日： 1983-06-21
- 发明人: Eros Modone , Giacomo Roba
- 申请人： Eros Modone , Giacomo Roba
- 申请人地址： ITX Turin
- 专利权人： Cselt Centro Studi E Laboratori Telecomunicazioni S.P.A.
- 当前专利权人： Cselt Centro Studi E Laboratori Telecomunicazioni S.P.A.
- 当前专利权人地址： ITX Turin
- 优先权： ITX67934A/80 19800616
- 主分类号： C03B37/00
- IPC分类号： C03B37/00 ; C03B37/018 ; C03C13/04 ; C03C21/00 ; G02B6/00 ; C03B37/075
摘要：
In order to improve the transmission characteristics of optical fibers drawn from the preforms manufactured by vapor deposition of silica on an inner wall surface of a supporting tube of glass, the tube is subjected to a two-stage heat treatment with deuterium whereby OH.sup.- groups at least on the inner tube surface are isotopically replaced by OD.sup.- groups. This pretreatment can be carried out in the same apparatus which is subsequently used for producing the preform.
信息查询
