Thursday, November 13, 2014

ZTE's Optical Transmission Record: 16 Tbps over 3,500km

ZTE announced an optical transport milestone:  24-hour, error-free transmission at 16 Tbps over 3,500 km.

The test used ZTE's WDM/OTN platforms with anced Nyquist WDM spectral compression optical modulation and optical impairments mitigation coherent reception techniques in the C band.  Erbium-doped fiber amplifiers (EDFA)  were deployed with 100 km span separations. The test achieved a spectral efficiency of 4bit/Hz/s.

"The successful test will enable ZTE to help operators increase network capacity several times over longer distances,” said Chen Yufei, Vice General Manager of Bearer Network Products at ZTE. “The strength of ZTE’s T-bit transmission technology helps our customers achieve sustainable growth in network bandwidth and reduce total cost of ownership.”

  • In September 2013, ZTE became the first equipment manufacturer to implement single-channel directly-detected 50Gb/s optical 64QAM-OFDM signal transmission and receiving and realize realtime fiber transmission of the signal, breaking the world record of single-channel transmission rate of 10Gb/s optical OFDM signal.
  • In October 2013, ZTE worked with Beijing Institute, China Telecom to complete 1T ultra long-distance optical transmission realtime system experiment and make the world record of realtime transmission over 3200km. In March 2014, ZTE became the first in the world to implement realtime transmission of dual carrier 100Gb/s directly detecting 16QAM-OFDM signal.