发明名称 |
LOWER-LOSS BASE MATERIAL FOR OPTICAL FIBRES AND MANUFACTURING METHOD THEREOF |
摘要 |
A method for manufacturing a base material of optical fibres having a desired ratio of core to clad, including forming a porous base material upon depositing glass particles, producing a core member upon dehydrating and vitrifying the porous base material, adding a clad member onto the core member, is characterized in that the method includes, a step of dehydrating the porous base material in an atmosphere of gas including helium and chlorine within an electric furnace; a step of vitrifying the porous base material in an atmosphere of inert gas including helium; and a step of providing a purging step of heating the porous base material in an atmosphere of inert gas mainly including helium between the dehydrating step and the vitrifying step.
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申请公布号 |
CA2430103(A1) |
申请公布日期 |
2003.11.30 |
申请号 |
CA20032430103 |
申请日期 |
2003.05.27 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
INOUE, DAI;OYAMADA, HIROSHI;OTOSAKA, TETSUYA;HIRASAWA, HIDEO |
分类号 |
G02B6/00;C03B37/012;C03B37/014;(IPC1-7):C03B37/016;C03B37/018 |
主分类号 |
G02B6/00 |
代理机构 |
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