Patent ID: 6707971
Filing Date: 2004-03-16
Classification: G02B

Abstract:
A dispersion management optical transmission system comprisinga first optical fiber having a positive dispersion and a positive dispersion slope in the 1.5 &mgr;m band and a second optical fiber or a second optical fiber module connected to a rear side of the first optical fiber and having a negative dispersion and a negative dispersion slope in the 1.5 &mgr;m band, the dispersion of the first optical fiber in the 1.55 &mgr;m band being 8 to 15 ps/nm/km and the dispersion slope being at least 0.04 ps/nm2/km, the dispersion of the second optical fiber or the second optical fiber module in the 1.55 &mgr;m band being not more than âˆ’40 ps/nm/km and the dispersion slope being not more than âˆ’0.08 ps/nm2/km, the cumulative dispersion of the first optical fiber being at least 200 ps/nm, and the cumulative dispersion when combining the first optical fiber and the second optical fiber or second optical fiber module being suppressed in any wavelength region of the 1.5 &mgr;m band.