Patent ID: 6810186
Filing Date: 2004-10-26
Classification: G02B,H04B

Abstract:
An optical transmission line comprising:a first optical fiber having a first dispersion value of 6 to 14 ps/nm/km at a wavelength of 1550 nm; a second optical fiber having a second dispersion value of âˆ’14 to âˆ’6 ps/nm/km at the wavelength of 1550 nm; said first optical fiber is connected in series to said second optical fiber; and a dispersion slope of said first optical fiber has an opposite sign relative to a dispersion slope of said second optical fiber in a wavelength range of 1530 nm to 1570 nm, wherein said second optical fiber has at the wavelength of 1550 nm: a transmission loss of 0.30 dB/km or less, a polarization mode dispersion value of 0.15 ps/km1/2 or less, a bending loss of 10 dB/m or less in a bending diameter of 20 mm, and a mode field diameter of 5.5 &mgr;m or more.