| 申请日期 | 2026-04-24 | 申请号 | EP02360303 |
| 公开（公告）号 | EP1416595B1 | 公开（公告）日 | 2008-05-21 |
| 公开国别 | EP | 申请人省市代码 | 全国 |
| 申请人 | Alcatel Lucent | ||
| 简介 | Optical fiber amplifier includes mono-mode core with refractive index (n1), first cladding around core with refractive index (n2); further cladding around first cladding with refractive index (n3); and ring with refractive index (n4) doped with rare earth material surrounding core. First cladding shows partly radial refractive index (n2) as function of radius almost continuously decreasing. | ||
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