UPGRADE OF 10 GBIT/S ULTRA-LONG-HAUL SYSTEM TO 40 GBIT/S WITH APOL RZ-DPSK MODULATION FORMAT
27 October 2005
It is demonstrated that ultra-long-haul links at 10 Gbit/s could be upgraded to 40 Gbit/s without any change to the infrastructure (fibre arrangement, amplifiers, dispersion map). The system capacity is doubled with alternate-polarisation RZ-DPSK modulation format.