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16 May 2011
Fujitsu Network Communications has announced new 100Gbps transponder and muxponder cards for the Flashwave 9500 Packet Optical Networking Platform, which will become generally available in the fourth quarter of this year.  The cards will increase the capacity on each wavelength ten-fold while also lowering the transmission cost per bit, to help operators meet the soaring demand for bandwidth on core networks.
Alcatel-Lucent and Ciena have been shipping 100Gbps optical systems for revenue for several years.  But although later to market than some, Fujitsu’s timing isn’t likely to be a problem, as the majority of 100Gbps deployments are not expected to begin until 2012 or later.
“With Fujitsu’s existing relationships and embedded customer base with large operators, they have a clear opportunity to attack,” said Ron Kline, principal analyst, network infrastructure, Ovum. “Our research shows service providers will ramp up their 100G roll out significantly over the next several years and Fujitsu is well positioned to take advantage of this trend.”
Fujitsu’s 100Gbps transmitter and receiver use single wavelength dual-polarisation quadrature phase-shift keying (DP-QPSK) modulation format with coherent detection – following the implementation agreements proposed by the Optical Internetworking Forum (OIF), which has become the industry standard for long-haul 100Gbps transmission.
Much of the 100Gbps technology is home-grown, reflecting the recent trend for systems houses to develop their own optical components.  The company can’t reveal specific details, but points out that its sister component companies are leaders in three key areas: 100Gbps lithium niobate modulators, DP-QPSK coherent receivers, and high-speed analogue to digital converter chips.
The 100Gbps cards will incorporate a number of enhancements over earlier technology generations, including soft-decision forward error correction (SD-FEC) and proprietary dispersion compensation algorithms.  SD-FEC enables a 1—2 dB performance improvement in the optical specifications, which is significant, it claims.  “We believe we will be of the first vendors to support SD-FEC at 100G with commercially available product,” said Randy Eisenach, WDM and 100G product planner at Fujitsu Network Communications.
The Flashwave 9500 Packet Optical Network Platform is a highly integrated, modular system supporting 88 channels at 100Gbps for a total of 8.8Tbps capacity.  With pluggable ROADM modules and a universal 480Gbps switch fabric, the system can aggregate and switch a mix of TDM, packet-based and OTN services on a single platform.
The 100G Transponder card supports a pluggable CFP module that can be provisioned for either 100 Gigabit Ethernet or OTU4 client signals.  The 100G Muxponder supports 10 ports at 10Gbps with pluggable XFP optics on the client side, and each client port is provisioned for 10 Gigabit Ethernet, OC-192/STM-64, or OTU2.
By Pauline Rigby