Coherent modulation has been used for many years by classic transport NEMs. In 2020, the market has seen 400G compact pluggable modules from multiple vendors inter-operating across an open ecosystem for broad applications. VIAVI is central to enabling that ecosystem.
Use this educational poster as a 400G DCO module reference source. It covers the types of 400G DCO optics, analog and digital, associated standards, pluggagle DCO applications, the DCO block diagram and DSP functionality, module management, and the 400G ZR protocol stack.