Patent ID: 6782172
Filing Date: 2004-08-24
Classification: G02B,H04B

Abstract:
An optical fiber whose chromatic dispersion DDCF and dispersion slope SDCF satisfy the following relational expressions at the 1550 nm wavelength:âˆ’250Â·psÂ·nmâˆ’1Â·kmâˆ’1&lE;DDCF&lE;âˆ’40psÂ·nmâˆ’1Â·kmâˆ’1 0.015 nmâˆ’1&lE;SDCF/DDCF&lE;0.030 nmâˆ’1 wherein said optical fiber comprises a central core region having a first refractive index, a first cladding region surrounding said central core region and having a second refractive index which is smaller than said first refractive index, and the variation of ratio (SDCF/DDCF) is equal to or less than 10% when the outer diameter of said central core region is altered by 2% while the ratio of the respective outer diameters of said central core region and said first cladding region are kept constant.