Optical fiber and an optical transmission system using the optical fiber

摘要

An optical fiber suitable for the WDM transmission in the wavelength bands of 1.31 mum and 1.55 mum is provided. An optical fiber is characterized by a zero dispersion wavelength of longer than 1330 nm and shorter than 1430 nm, a dispersion of not less than 6 ps/nm/km and not more than 15 ps/nm/km at a wavelength of 1550 nm, a ratio of a dispersion to a dispersion slope of not less than 200 nm and not mare than 400 nm at a wavelength of 1550 nm, a dispersion of not more than -1 ps/nm/km and not less than-8 ps/mn/km at 1300 nm, and a cutoff wavelength of 1300 nm or shorter.