MUNICH -- Nokia Siemens Networks has demonstrated how FlexiGrid* technology can upgrade optical transport networks to 400G (gigabits per second). The move is aimed to address the rapidly growing demand for bandwidth among operators today. Using FlexiGrid, the company has conducted the industry’s first trial of 400G data transmission over single mode fiber at a distance of over 600km. The trial was conducted at Nokia Siemens Networks’ R&D lab in Munich, Germany. Nokia Siemens Networks is demonstrating its optical transport networks at the OFC/NFOEC conference in Los Angeles, California during March 8-10, 2011.

Nokia Siemens Networks used FlexiGrid* and advanced digital signal processing for this demonstration. Once the solution is commercialized, it will allow 400G evolution for operators’ current 10G/40G or 100G DWDM multi-haul hiT 7300 platform and Next Generation Packet Optical Transport Solution (P-OTS)**. In addition, the increased utilization of fiber capacity will drive down costs.

“ With the increase in network traffic outgrowing revenue coupled with 100G reaching the limits of spectral efficiency, operators are looking to evolve their network beyond 100G,” said Uwe Fisher, head of optical networks product management at Nokia Siemens Networks. We have now reached another milestone, which demonstrates that our hiT 7300 paves the way for operators to easily upgrade their optical data transport networks and allow them to flexibly balance between speeds above 100G and the fiber length along with improving the efficiency of their fiber infrastructure.”

Nokia Networks