Single chip FPGA 100G muxponder for optical transport networks

September 19, 2012 // By Nick Flaherty
Altera has demonstrated a single-chip, multi-rate OTN (optical transport network) muxponder solution for 100G network aggregation.

Using the 28nm Stratix V FPGA, the multi-rate muxponder solution provides a proven single-chip solution that expands the capabilities of current networks by enabling developers to integrate emerging client types into their networks, such as 16G Fibre Channel.
The proliferation of 10G ports and the acceleration of networks from 40G towards 100G is driving operators to look for ways to minimize operational complexity by aggregating both legacy clients as well as 10G and 40G feeder networks into 100G for high-capacity transport. Altera's multi-rate muxponder solution addresses both data center and transport aggregation by flexibly supporting emerging clients, such as 16G Fibre Channel and 40G Ethernet along with various 10G clients. A flexible FPGA-based implementation allows network developers to reduce development risks, create differentiation and future-proof their designs.
The demonstration transmits multiple client interfaces through a Stratix V FPGA to a 100G CFP optical module on the line side. Each individual client will be independently mapped to an ODUk/ODUflex container. These lower order ODUk/ODUflex containers will then be GMP mapped according to G.709 to the higher order ODU4 for transmit to the line side.
"Altera's comprehensive portfolio of FPGA-based OTN solutions have been selected by eight of the top ten optical OEMs," said Dan Mansur, director of Altera's communications division. "With our latest multi-rate muxponder IP solution, customers can customize their systems and target FPGA architectures that are optimized for their specific design requirements."
Altera's multi-rate OTN muxponder IP solution is a fully integrated digital core providing client adaptation with FEC (forward error correction), ODUTG4 multiplexing of up to 100G of client traffic, OTU4 mapping and framing and line-side FEC. The client interface is supported by high-performance 14.1-Gbps transceivers for direct connection to SFP+, XFP, and QSFP optical modules, up to 12 ports operating at 10 Gbps and up to two ports operating at 40 Gbps that are both dynamically and independently reconfigurable. The line interface is supported by both 14.1-Gbps