发明名称 |
RARE EARTH-DOPED CORE OPTICAL FIBER AND METHOD FOR MANUFACTURE THEREOF |
摘要 |
A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the light absorption band which appears around a wavelength of 976 nm in the light absorption band by ytterbium contained in the core shows a peak light absorption rate of 800 dB/m or less. |
申请公布号 |
EP1947065(A4) |
申请公布日期 |
2013.01.30 |
申请号 |
EP20060832391 |
申请日期 |
2006.10.26 |
申请人 |
FUJIKURA, LTD. |
发明人 |
IKEDA, MASASHI;YAMADA, NARITOSHI;HIMENO, KUNIHARU;NAKAI, MICHIHIRO;KITABAYASHI, TOMOHARU |
分类号 |
C03C13/04;C03B37/018;C03B37/027;G02B6/00;G02B6/036;H01S3/06 |
主分类号 |
C03C13/04 |
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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