NEC and AT&T Demonstrate Spectral Efficiency for 100Gb Transmission

NEC Corporation of America, a provider of network, IT and identity management solutions, together with AT&T Labs, has demonstrated schemes for modulation and transmission of high speed optical signals at 40Gb/s and 100Gb/s data rates.

NEC Corporation of America (NEC) and AT&T generated multiple wavelength-division-multiplexed optical signals, each loaded with 114Gb/s within a 25GHz-wide portion of the optical spectrum. It is claimed that this technique resulted in the highest spectral efficiency ever achieved for long-haul optical transmission.

The experiment to demonstrate this transmission over 640km of fiber was performed by NEC Laboratories America in collaboration with AT&T Labs in Middletown, New Jersey.

Milorad Cvijetic, vice president and chief technology strategist of optical network systems division at NEC, said: “NEC enjoys a rich, global R&D culture that has kept us at the forefront in this sector. We introduced new record-breaking results in transmission of 100G signals, which once again validates our record as one of the premier players in the optical arena.”