发明申请
- 专利标题： OPTICAL FIBER AND OPTICAL FIBER PREFORM
- 专利标题（中）： 光纤和光纤预制
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申请号： US12441040申请日： 2007-09-13
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公开(公告)号： US20090317040A1公开(公告)日： 2009-12-24
- 发明人: Takeshi Yoshida , Tomohiro Nunome
- 申请人： Takeshi Yoshida , Tomohiro Nunome
- 申请人地址： JP Kohtoh-ku, Tokyo
- 专利权人： Fujikura Ltd.
- 当前专利权人： Fujikura Ltd.
- 当前专利权人地址： JP Kohtoh-ku, Tokyo
- 优先权： JP2006-249360 20060914
- 国际申请： PCT/JP2007/067830 WO 20070913
- 主分类号： G02B6/036
- IPC分类号： G02B6/036
摘要：
An optical fiber is constituted by: a three-layer structured core which includes, a first core (having a relative refractive index difference of Δ1 in a region of a radius of R1), a second core (having a relative refractive index difference of Δ2 in a region from the radius R1 to a radius of R2), and a third core (having a relative refractive index difference of Δ3 in a region from the radius of R2 to a radius of R3), wherein the relative refractive index differences have relationships of Δ1>Δ2, Δ3>Δ2, and Δ3>Δ1, when Δ1−Δ2=X and Δ3−Δ2=Y, (X+Y)>0.4% is satisfied, and X and Y satisfy 0.25%
公开/授权文献
- US07835609B2 Optical fiber and optical fiber preform 公开/授权日：2010-11-16