The flexible mix of coherent optical interfaces allows a range of choice in packet transponder deployment. The ACO cards accept pluggable CFP2 transceivers where the DSP functions are performed on the card, whereas the DCO cards have the DSP embedded in the CFP2 transceivers. The Accton packet transponder supports eight line cards for both Analog Coherent Optics (ACO) and Digital Coherent Optics (DCO). Digital signal processors (DSPs) at both ends of a link are used to compensate for chromatic dispersion and polarization mode dispersion, resulting in better performance with higher data rates that can run over metro and long-haul distances. Coherent optics can send a data signal across different light polarizations, which enables more information to be sent through a single fiber.
The coherent optical line cards and transceivers are specifically for data center interconnection and service provider backhaul. Accton has also developed the industry’s first modular open disaggregated packet transponder offering a high-capacity combination of 100 Gigabit Ethernet (GbE) switching ports and 100/200 Gbps coherent optical interfaces.
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