Optical solutions provider Windstream Wholesale of Little Rock, AK, USA has tested the interoperability of QSFP-DD form factor ZR+ pluggable modules from II-VI Inc of Saxonburg, PA, and Acacia Communications Inc of Maynard, MA (now part of Cisco). The tests established 400 Gigabit links in a production environment over a 1027km link. The team also leveraged the Marvell Deneb coherent DSP (digital signal processor) within a native 0dBm II-VI pluggable and the Acacia module using the Greylock DSP. Industry-standard oFEC (open forward-error correction) algorithms were also used in the trials...
Source: http://www.semiconductor-today.com/news ... 0422.shtml