MAY 26, 2010 -- Opnext Inc. (NASDAQ:OPXT) says it has demonstrated a single-wavelength, real-time coherent 127G PM-QPSK (polarization multiplexed quadrature phase-shift keying) modem on the TeliaSonera network running through Sweden. The TeliaSonera trial represents the first real-time, single-wavelength 100G field trial in Europe, Opnext asserts.

Opnext can make the claim because the first generation of Ciena’s (ex-Nortel) PM-QPSK 100G technology isn’t single-wavelength.

The trial conducted over a long-haul link with 10-Gbps and 40-Gbps mixed traffic ran from Uppsala to Olofström in Sweden and back for a total distance of 1700 km. This represents the longest un-regenerated real-time test announced to date, Opnext says.

Opnext says its plug-and-play technology enables 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 enables deployment over older installed fiber.

"100G modem performance is critical to help carriers meet the ever-increasing bandwidth demands from their customers," said Mike Chan, president of the Opnext Subsystems business unit. "This trial represents the longest real-time 100G trial performed to date, moving the industry one step closer to the commercialization of 100G technology."

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