Date Added: Feb 2010
Fibre links in optical networks generally comprise several relatively short fibre segments which have been spliced together in cables. These fibre segments or "Sections" are assembled with optical connectors and have a typical length of some tens of km. The important characteristic parameters of the fibre sections are attenuation, Chromatic Dispersion (CD) and Polarisation Mode Dispersion (PMD). However, the PMD of the optical fibres can hamper the upgrade of optical backbone networks towards higher data rates of 40 Gbit/s and beyond.