800G optical transport

Coherent technology innovation has made it possible to transport 800Gbit/s per channel. This helps network operators to increase the capacity of their transport networks and meet ever-increasing traffic demands. However, with 95GBd solutions, the use of 800Gbit/s channels has been limited to short routes. On long routes, network operators have had to choose between using optical regeneration or decreasing channel speeds. Since optical regeneration has a significant impact on cost, reducing speed has usually been the preferred option. But now things are changing. Flexible coherent transport technology has emerged that offers fine granular modulation combined with a wider range of symbol (or baud) rates options. This gives operators a choice. They can choose an ultra-high baud rate for 800Gbit/s over long distances. Or they can minimize spectrum use by harnessing lower symbol rates when transmission paths allow. This ensures ultimate efficiency and highest performance from metro to long-haul networks.