Tuesday, May 25, 2010

TeliaSonera Carries 127 Gbps Single Wavelength over 1,700km

TeliaSonera, in partnership with Opnext, demonstrated a single wavelength, real-time coherent 127G PM-QPSK (Polarization Multiplexed Quadrature Phase Shift Keying) modem running over a 1,700km span.

The trial conducted over a long haul link with 10 Gbps and 40 Gbps mixed traffic ran from Uppsala, Sweden to Olofström, Sweden and back for a total distance of 1700km and represents the longest un-regenerated real-time test to date. The TeliaSonera trial represents the first real-time, single wavelength 100G field trial in Europe.

Opnext noted that the transmission channel did not require optimization to implement the 100 Gbps technology, which further demonstrates the ease-of-use of coherent technology.

Currently, 10 Gbps and most 40 Gbps optical systems using direct detection require optimization and intervention by an optical network engineer to balance all of the optical impairments on an installed optical fiber. Opnext plug and play technology allows carriers to upgrade their existing line systems to 100 Gbps without requiring any change to their existing networks. In addition, new systems using Opnext technology can eliminate the need for external dispersion compensation, which reduces cost, minimizes IP latency and allows for deployment over older installed fiber.

"TeliaSonera has one of the largest and fastest growing IP backbones in Europe, and this trial demonstrates our focus on maintaining a state of the art network that is ready to use next-generation technologies, such as coherent 100 Gbps, from vendors like Opnext," said Staffan Göjeryd, Head of Broadband Development, TeliaSonera.

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