Alcatel-Lucent and BT achieve fastest real-world fiber speeds of 1.4Tb/s with a world record spectral efficiency of 5.7b/s/Hz over core network

Alcatel-Lucent (Euronext Paris and NYSE: ALU) and BT have today announced trial speeds of up to 1.4Tb/s with a record spectral efficiency of 5.7 bits per second per Hertz (b/s/Hz)on an existing core fiber connection. This is believed to be the fastest speed ever achieved in commercial grade hardware in a real-world environment and is equivalent to transmitting 44 HD films in a single second.

The field trial, conducted over an existing fiber link between the BT Tower in London and BT’s Adastral Park research campus in Suffolk, used a new ‘flexible grid’ infrastructure (Flexgrid) to vary the gaps between transmission channels, usually set at 50Gigahertz (GHz). By increasing the density of channels News_Releases_2014/News_Article_002988.xml|באתר הרשמי]