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Achieving record low power consumption per bit for coherent optical transceivers Transmission reaches for metro applications have to be above 50 km for metro/access and below 1000 km for metro/regional applications. This requires compact, scalable, cost-efficient, and easy-to-use digital coherent transport solutions such as the Acacia CFP2-DCO module. Figure 1: CFP2-DCO coherent module Acacia’s en...