Xtera Intros Submarine DWDM Systems

Xtera's Nu-Wave enables unrepeatered submarine transmission over 400 km with no remote optical amplifier

November 30, 2004

1 Min Read

DALLAS -- Xtera, a supplier of latest-generation optical networking transport solutions for long-haul and ultra long-haul applications with abundant high-quality bandwidth, has used its patented and already proved-in all-Raman technologies to offer an innovative, low-cost, high-density and high-reliability unrepeatered submarine solution.

Xtera's unrepeatered Nu-Wave product comes in three configurations, with each configuration optimized to provide the best performing, most economical solution for the specific application:

  • Nu-Wave ES (Extended Span) Enhanced terrestrial Nu-Wave systemoptimized for spans up to 50 dB of loss;

  • Nu-Wave LS (Long Span) Additional amplifier enhancements tosupport longer spans;

  • Nu-Wave XLS (Extra Long Span) Forward Raman pumping to achieve anadditional 6 dB of span performance, extending the system capability up to75 dB.

Nu-Wave ES/LS/XLS configurations are directly derived from the mature and proved-in terrestrial technology already in service in the longest all-optical link deployed to date in Europe (1,760 km FLAG Telecom FA-1 backhaul network).

The Nu-Wave ES/LS/XLS scales from 10 to 600 Gb/s of capacity in less than one 7-foot rack, offering industry leading space and power efficiency. The system capacity can be made of 2.5- or 10-Gb/s, SONET or SDH client signals.

The Nu-Wave ES/LS/XLS supports applications on various types of fibers, including G.652 (SSMF), G.653 (DSF), and G.654 (PSCF) fibers. Because of its large 100-nm optical bandwidth, Xtera's solution enables optimal allocation of channel wavelengths with respect to the zero-dispersion wavelength of the fiber. For example, placing the wavelengths around 1600 nm makes G.653 fiber behave as non-zero dispersion-shifted fiber with negligible degradation due to nonlinearities.

Xtera Communications Inc.

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