发明授权
- 专利标题： Method of manufacturing a limited mode optical fiber
- 专利标题（中）： 制造有限模式光纤的方法
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申请号： US704146申请日： 1976-07-12
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公开(公告)号： US4140505A公开(公告)日： 1979-02-20
- 发明人: Melvin M. Ramsay , Philip W. Black
- 申请人： Melvin M. Ramsay , Philip W. Black
- 申请人地址： NY New York
- 专利权人： International Standard Electric Corporation
- 当前专利权人： International Standard Electric Corporation
- 当前专利权人地址： NY New York
- 主分类号： C03B37/018
- IPC分类号： C03B37/018 ; G02B6/26 ; C03C25/02 ; C03B37/04
摘要：
A single mode optical fiber having a central core region of uniform composition and thickness and core end regions each having a core with a graded composition and increasing thickness. The fiber towards the ends of the fiber maintains a constant normalized frequency with a minimum bending loss. Methods are also provided for forming the fibers from a fiber optic preform.