| Original document(65 pages) 中文版 |
An optical fiber 10 is one in which at a mean zero dispersion wavelength lambada<0> in an overall length, an absolute value of the fourth order dispersion beta<4> of propagation constant with respect to frequency is not more than 5*10<-56>s<4>/m and a fluctuation of the zero dispersion wavelength along the longitudinal direction is not more than +-0.6 nm in the overall length. The optical fiber 10 comprises at least a center core part 11 having a maximum refractive index N<1> and an outside diameter 2a, a depressed part 12 having a minimum refractive index N<2> and an outside diameter 2b, and a cladding part 13 having a maximum refractive index N<3>. The refractive indices of the respective parts satisfy the relation of ''N<1>>N<3> > N<2>''. With respect to the refractive index of the cladding part, a relative index difference of the center core part is defined as delta<+> and a relative index difference of the depressed part as delta<->; then a difference ''delta<+>-delta<->'' is not less than 2.2%, and a ratio Ra (= 2a/2b) of the outside diameters of the center core part and the depressed part is in the range of 0.2 to 0.7. |
Application Number
申请号 |
200610127685 |
Application Date
申请日 |
2006.09.07 |
| Title 名称 |
Optical fiber and optical device using the same |
Publication Number
公开号 |
1928596 |
Publication Date
公开日 |
2007.03.14 |
| Approval Pub. Date |
|
Granted Pub. Date |
|
| International Classification 分类号 |
G02B6/02;G02B6/00;G02F1/35 |
Applicant(s) Name
申请人 |
Sumitomo Electric Industries |
| Address 地址 |
|
| Inventor(s) Name 发明人 |
|
| Attorney & Agent 代理人 |
gugong xia zhangtian shu |
| More information 更 多 信 息 |
|
|
|