| 申请日期 | 2025-06-28 | 申请号 | US11056870 |
| 公开（公告）号 | US7313312B2 | 公开（公告）日 | 2007-12-25 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Ronald L Kimball; Robert A Knowlton; Joseph E McCarthy; Ji Wang; Donnell T Walton; Luis A Zenteno | ||
| 简介 | According to one example of the invention an optical fiber comprises : (i) silica based, rare earth doped core having a first index of refraction n1; (ii) at least one silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2; wherein at least one of the core or cladding is doped with Al2O3, such that the ratio of max wt % to min wt % of Al2O3 concentration is less than 2 : 1. | ||
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