发明名称 |
OPTICAL FIBER AND PLANAR WAVEGUIDE FOR OBTAINING CONSTANT OPTICAL ATTENUATION |
摘要 |
PURPOSE: An optical attenuator is provided, which includes an optical fiber having a core doped with a dopant absorbing a light in a fixed wavelength band, and the optical fiber and a planar waveguide are provided, which attenuate an optical signal constantly. CONSTITUTION: An optical fiber is for obtaining a constant optical attenuation and has a core layer(13) and a clad layer(12). The core layer is co-doped with at least more than one ion of the first metals whose absorption coefficient has a negative slope in a fixed wavelength band and at least more than one ion of the second metals whose absorption coefficient has a positive slope in the fixed wavelength band. The first metals are Fe, Cr, Mn and V. And the second metals are cobalt and nickel.
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申请公布号 |
KR20030065291(A) |
申请公布日期 |
2003.08.06 |
申请号 |
KR20020076655 |
申请日期 |
2002.12.04 |
申请人 |
KWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY;OPTONEST CORPROATION |
发明人 |
HAN, WON TAEK;KIM, JIN HAENG |
分类号 |
G02B6/00;(IPC1-7):G02B6/00 |
主分类号 |
G02B6/00 |
代理机构 |
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地址 |
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