WARSAW -- Orange and Nokia have achieved the world's first optical transmission of 250 Gigabits per second (Gb/s) per wavelength over 870km through Orange Poland's existing network infrastructure. This milestone was reached when a six-carrier 1.5 Terabits per second (Tb/s) superchannel occupying a bandwidth of 300GHz was transmitted between Warsaw and Wroclaw over standard single mode fiber. The trial demonstrates how Orange Poland can stay ahead of surging bandwidth demand as cloud networking continues to grow.
Optical systems typically achieve maximum transmission capacity over short distances and lower capacity across long distances. This trial demonstrated how capacity and distance can be improved in tandem using Nokia technology, resulting in a 250% increase in bandwidth over commonly deployed 100Gb/s networks using the same amount of spectrum.
• The 1.5Tb/s superchannel is based on six carriers of 250Gb/s capacity each. With electrical speed 30% faster than current technology, the capacity is maximized while the channel spacing remains aligned with the 50 GHz ITU-T grid.
• The field trial used a 870km fiber link with flexible grid infrastructure and standard erbium-doped fiber amplification applied to 20dB spans of standard single mode fiber. The size of the superchannel and its 50GHz spacing between channels, which is the same as existing 100Gb/s channels, will ease network planning and operation.
• Orange and Nokia also demonstrated with a real-time transponder a record spectral efficiency of 5 bits/Hz with 250Gb/s in 50GHz over 870km by using 16QAM modulation format.
• The new optical link could transmit up to 24Tb/s of traffic in total if 96 channels amplifiers were used.
Nokia Corp. (NYSE: NOK)