发明名称 |
Amplifying optical fiber, optical fiber amplifier and optical transmission system |
摘要 |
This invention relates to an optical fiber for amplification suitable for amplifying signals in the L-band, an optical fiber amplifier including the optical fiber, and an optical transmission system. The optical fiber amplifier according to the invention includes a silica-based optical fiber as an optical fiber for amplification, which has a core region doped with Er and Al. The optical fiber for amplification has an Er concentration of 1,500 wt.ppm or less, and has the characteristics at a wavelength of 1.53 mum of: an absorption loss of 10 dB/m or more but 25 dB/m or less; and an unsaturated absorption of 900 dB or less.
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申请公布号 |
US2004047584(A1) |
申请公布日期 |
2004.03.11 |
申请号 |
US20030451844 |
申请日期 |
2003.06.26 |
申请人 |
KASHIWADA TOMONORI;SUZUKI TOSHIMI |
发明人 |
KASHIWADA TOMONORI;SUZUKI TOSHIMI |
分类号 |
H01S3/067;H01S3/16;(IPC1-7):G02B6/00 |
主分类号 |
H01S3/067 |
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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