Fujitsu intros second gen 40Gbps interfaces for FLASHWAVE 7500 ROADM

JAPAN: Fujitsu Network Communications, a leading supplier of innovative optical and wireless networking solutions, announced the general availability of second-generation 40Gbps interfaces for its market-leading FLASHWAVE 7500 Reconfigurable Optical Add/Drop Multiplexer (ROADM).

Utilizing an innovative Adaptive Differential Phase Shift Keying (ADPSK) modulation scheme and Fujitsu patented Variable Dispersion Compensation (VDC), the second generation units enable network growth up to 1.6Tbps of capacity to help customers meet ongoing demands for increased speed and bandwidth.

“40Gbps is one of the highest Optical Networking (ON) growth areas as consumer demand, driven by video, is stressing network capacities,” said Ron Kline, research director of network infrastructure at Ovum. “The 40Gbps market will grow nearly 90 percent in 2009 as a new generation of integrated muxponders becomes available and 4x10 Gbps applications dominate deployments.”

Three new 40 Gbps units are now available for the FLASHWAVE 7500 ROADM, including the 40Gbps Transponder, 4:1 Muxponder, and 40Gbps Regenerator. Primarily intended for 40Gbps core router interconnection services, the 40Gbps Transponder provides a full-band tunable network interface and an OC-768 client interface.

Supporting four 10Gbps client interfaces, the 4:1 Muxponder provides an efficient method for aggregating 10Gbps traffic and quadrupling the capacity of existing 10Gbps-based networks. The 40Gbps Regenerator provides electrical signal regeneration for long spans, eliminating the cost and complexity involved with the use of back-to-back transponders.

“As a leading researcher and systems developer in the photonics industry, Fujitsu continues to advance high-speed optical technology and innovation,” said Bill Erickson, senior vice president of planning and development at Fujitsu Network Communications. “With the introduction of our second generation 40Gbps units we’re improving optical performance and reducing the physical size of the 40Gbps units by 50 percent as compared to our first generation 40Gbps cards previously announced in June 2007.

All units support ITU G.709 Optical Transport Network (OTN) standards for mapping client signals, optical layer performance monitoring, alarm indication signals, and Enhanced Forward Error Correction (EFEC) for improved optical performance. A Fujitsu-patented VDC device is incorporated into each module, permitting 40 Gbps transmission over wavelengths originally designed to have a maximum speed of 10 Gbps.

With this flexibility, network planners who face capacity shortages on existing networks can now effectively increase wavelength capacity fourfold and offer new 40 Gbps services without requiring changes to their existing 10 Gbps wavelengths and networks.