OPTICAL FIBER FOR OPTICAL AMPLIFYING AND PRODUCTIO

专利名称：OPTICAL FIBER FOR OPTICAL AMPLIFYING

AND PRODUCTION METHOD THEREFOR

发明人：ENDO, SHINJI,ISHIKAWA, SHINJI,KAKUI,

MOTOKI,SUZUKI, TOSHIMI

申请号：EP00905351申请日：20000225公开号：EP1091461A4公开日：20040721

摘要：An optical fiber for optical amplifying, provided with a structure for

implementing flat gain characteristics or oscillation characteristics in wider wavelengthbands, and a production method therefor. The optical fiber for optical amplifying isprovided with a second dope region containing an optical axis center-containing firstdope region and having an outer diameter larger than that of the first dope region. Atleast any one of Al2O3, P2O5, Y2O3 and B2O3 are added into the second dope region asoxides of elements having valences different from those of cations constituting the mainmaterials of the above optical fiber. At least any of Er, Nd, Tm, Yb, Pr as rare earthelements, in addition to the above oxides, are added into the first dope region.

申请人：SUMITOMO ELECTRIC INDUSTRIES, LTD.

更多信息请下载全文后查看