Patent Document ID: 7702241
Application ID: 11608158
Patent Flag: 1

Claim One:
1. A regenerator for regenerating optical signals on optical transmission links, in particular for use in a Dense Wavelength Division Multiplex (DWDM) optical transmission system, comprising: optical amplification means for compensating optical power losses, a deterministic adaptation unit comprising means being adapted to compensate deterministic transmission impairments of the optical transmission link, in particular optical dispersion compensation means adapted to compensate for chromatic dispersion of said link, and a non-deterministic adaptation unit, arranged behind the deterministic adaptation unit, comprising means for compensating time variant non-deterministic transmission impairments, in particular polarization mode dispersion, characterized in that said non-deterministic adaptation unit comprises a multi-section scrambler for performing polarization scrambling of all DWDM channels of the optical transmission link, wherein the DWDM optical transmission system employs Forward Error Correction (FEC).