wiredinUSA March 2014

optical modules gives data center network architects and managers a new option for deploying 40G Ethernet in addition to 40GBASE-SR4. Signature Core is designed for reach and design flexibility, compensating for both modal and chromatic dispersion to provide verified optical performance and signal integrity beyond 10/40/100 Gb/s Ethernet and 8/16 Gb/s fiber channel standards requirements. Cisco has launched a new 40G Ethernet bidirectional opticalmodule, BiDi, inaddition to the 40G Ethernet QSFP+ optical modules. The 40G BiDi optical module supports 40G Ethernet over one pair of multimode fiber while allowing 40G Ethernet to be deployed using thesame infrastructureas 10GEthernet (10GBASE-SR). The 40G BiDi conforms to the QSFP+ multi-source agreement (MSA). The BiDi modules are said to reduce the cost of deploying 40G Ethernet by over 60 percent versus 40GBASE-SRmodules, anddo not require expensive components for their infrastructure to migrate to 40G Ethernet. The Signature Core system provides a lower cost alternative to the more expensive single mode fiber 40GBASE-LR links within the data center.

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wiredInUSA - March 2014

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