| 摘要 |
A regenerator ( 7. x, 7.1 - 7.3 ) for regenerating optical signals on optical transmission links ( 4 ), in particular for use in a Dense Wavelength Division Multiplex (DWDM) optical transmission system. The regenerator ( 7. x, 7.1 - 7.3 ) comprises optical amplification means ( 7. xa, 7. xd) for compensating optical power losses, and a deterministic adaptation unit ( 7. xb) comprising means being adapted to compensate deterministic transmission impairments of the optical transmission link ( 4 ), in particular optical dispersion compensating means being adapted to compensate for chromatic dispersion of said link ( 4 ). The proposed regenerator ( 7. x, 7.1 - 7.3 ) further comprises a non-deterministic adaptation unit ( 7. xc) comprising means for compensating time variant non-deterministic transmission impairments, in particular polarisation mode dispersion. In this way, the proposed regenerator overcomes transmission limitations and improves robustness of long and ultra-long-haul multi-span DWDM transmission systems with respect to deterministic and non-deterministic transmission impairments.
|
