OPTICAL-FIBER CABLE AND METHOD FOR TRANSMITTING OPTICAL SIGNALS, PARTICULARLY ACCORDING TO WAVELENGTH MULTIPLEXING TECHNOLOGY

摘要

The invention relates to an optical-fiber cable which, with relatively low attenuation, is characterized by a dispersion that avoids nonlinearities. The optical-fiber cable comprises at least one first section (a), which has fibers of a first type (H) that are configured as high-level fibers, and comprises at least one second section (b), which has fibers of a second type (N) that are configured as low-level fibers. The fibers of the first type (H) are connected to the fibers of the second type (N) at at least one transition point (U) between the first and second sections (a, b). The fibers of the first type (H) have a larger mode field diameter and a higher dispersion than the fibers of the second type (N). The invention also relates to a method for transmitting optical signals, according to which the optical signals to be transmitted are launched in fibers of the first type (H) of a first section (a) of an optical-fiber cable of the aforementioned type and, after a specified transmission path, are supplied in fibers of the second type (N) of a second section (b) of the optical-fiber cable.