100 Gbps coherent digital CFP interface for short reach, regional, and ultra long-haul optical communications

For the first time, we show that 100G coherent digital CFP is efficient to address short-reach (<;150 km), regional (<;1000 km), and ultra long-haul (~2000 km) transmission applications with half the cost, one third the power consumption and one quarter the size of common 100G WDM interfaces.