发明名称 |
PRODUCTION OF OPTICAL FIBERS |
摘要 |
PURPOSE:To prevent the defomation, crazing, etc. of core layer by performing refractive index controlling by the use of depants of small values of a constant k at the boundary part of core and clad and core central part and a dopant of a large value at core intermediate part. |
申请公布号 |
JPS53119057(A) |
申请公布日期 |
1978.10.18 |
申请号 |
JP19770034212 |
申请日期 |
1977.03.28 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES |
发明人 |
YOSHIDA MASAAKI;YOKOTA HIROSHI;SUZUKI SHIYUUZOU |
分类号 |
C03B37/018;C03B37/014 |
主分类号 |
C03B37/018 |
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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