COMPARISON OF SYSTEM PERFORMANCE AT 50 , 62.5 AND 100 GHZ CHANNEL SPACING OVER TRANSOCEANIC DISTANCES AT 40 GBIT/S CHANNEL RATE
03 February 2005
Assuming RZ-DPSK format at 40 Gbit/s channel rate, the impact on the Q-factor of a variable channel spacing has been evaluated in five WDM experiments conducted in a recirculating loop over transoceanic distances. A degradation of the Q-factor by nearly 3 dB is observed when the channel spacing is reduced from 100 to 50 GHz.