发明名称 |
Rare earth-doped core optical fiber and manufacturing method 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 absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less. |
申请公布号 |
US8340487(B2) |
申请公布日期 |
2012.12.25 |
申请号 |
US20080109612 |
申请日期 |
2008.04.25 |
申请人 |
IKEDA MASASHI;YAMADA NARITOSHI;HIMENO KUNIHARU;NAKAI MICHIHIRO;KITABAYASHI TOMOHARU;FUJIKURA LTD. |
发明人 |
IKEDA MASASHI;YAMADA NARITOSHI;HIMENO KUNIHARU;NAKAI MICHIHIRO;KITABAYASHI TOMOHARU |
分类号 |
G02B6/02;G02B6/00 |
主分类号 |
G02B6/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|