Alcatel-Lucent Bell Labs obtained SDM technology breakthroughs to achieve P bit middleweight transmi

2015-11-20 00:00:48

Alcatel-Lucent Bell Labs today announced record achieve optical network transmission capacity to better meet demand for 5G and networking traffic. According to a study at Bell Labs, telecom operators and enterprises witnessed a cumulative growth of data traffic has exceeded 100%. With 5G application surfaced in the horizon, there will be Pi Bite Middleweight (1000Tbps) commercial optical transmission systems within the next ten years, it has exceeded the capacity limit of the current commercial optical transmission systems. In 2015 IEEE Photonics Conference recently held at Bell Labs demonstrated the first in the industry based on a real-time space division multiplexing optical SDM Multiple Input Multiple Output MIMO technology to address this market demand. This groundbreaking technology will now commercially available optical transmission system capacity 10T / 20T increased to P bits magnitude.


In the trial, Bell Labs using 6X6 MIMO-SDM configuration, including six transmitters, six receivers, with real-time DSP, based 60 km 3 core coupled-mode optical fiber. Experiment at Bell Labs in New Jersey headquarters were. Bell Labs hopes MIMO-SDM technology can help them break through the nonlinear Shannon limit to limit the transmission capacity of the current system settings.


Lightwave website quoted Peter Winzer of Bell Labs research and development director of the optical transmission system, then the significance of the experiment were more elaborate. Winzer said that previous experiments SDM, DSP parts are done on a computer other than the transmission line. The first experiment will form a chip DSP functions integrated into the system, just as the current coherent (2X2 MIMO) systems, and therefore is a major breakthrough. Experimental use of Xilinx's XC7V200T FPGA chip to implement DSP functions, in addition to the configuration of the 12 5GS/s 10-bit analog to digital converter silicon germanium. 12 2.5Gbps 30Gbps output signals are combined into the way, through three different polarized lithium niobate phase modulator within the four-phase, applied to an external cavity laser linewidth 100KHz issued on 1550nm optical carrier, after the optical amplifier output. Then after three custom photon lantern SDM multiplexer input side. Winzer and his team at the IEEE Conference on the final report of the results is to achieve a bit error rate 8X10-4 and 7X-3's. He said the next step they will continue to improve DSP ASIC-based technology and eventually be realized.


SDM application for the future, Winzer consider existing fiber transmission limit will eventually come. Until that day comes, if operators need to deploy new fiber, optical fiber support SDM and perhaps more economical choice. Prior to this, the operator can also use a plurality of single-mode fiber to simulate multi-core fiber structure, but to do so in the financial connected workload bound to be greater.


And Alcatel-Lucent CTO Marcus Weldon, president of Alcatel-Lucent Bell Labs, said the experiment was an important breakthrough in the field of optical transmission. 5G and the advent of cloud computing, is to make the human crossroads in communications networks. Telecommunications carriers and enterprise network operators are facing enormous challenges flow upgrades. Bell Labs continuous innovation to help shape the future form of the communication network.


In the field of ultra-high-speed transmission, Alcatel-Lucent has been the industry leader. In June 2010, Alcatel-Lucent performed the first single-carrier 100G transmission, in 2014 introduced the industry's first 100G / 200G single carrier line cards, the total transmission capacity of 24Tbps. 2013, Alcatel-Lucent and France Telecom Orange and cooperation for the first time deployed the 400G Super Channel, a total transmission capacity of 17.6Tbps.