The dispersion managed optical fiber (1) far use in wavelength division
multiplex transmission networks includes longitudinally alternating positive and
negative chromatic dispersion optical fiber portions and includes a core having
a varying index profile and a cladding having a constant index. Each optical fiber
portion (T+, T-;) has at a wavelength of 1550 nm a chromatic dispersion whose absolute
value is from 1 ps/nm.km to 10 ps/nm.km, a chromatic dispersion slope whose absolute
value is less than 0.015 ps/nm2.km, and an effective area greater than
35 m2. The relative effective area difference at a wavelength
of 1550 nm between the positive and negative chromatic dispersion optical fiber
portions is less than 7%, and each optical fiber portion (T+, T-;) has bending
losses at a wavelength of 1625 nm less than 0.1 dB for 100 turns with a diameter
of 60 mm.
