Influence of the ROADM architecture on the cost-per-bit in C+L+S multi-band optical networks

A detailed cost-per-bit analysis of four C+L+S multi-band (MB) reconfigurable optical add-drop multiplexers architectures is presented and discussed. A network cost analysis, including these MB nodes is also presented. The MB common-band architecture, based mainly on C-band components, is the most cost effective architecture in almost all the network scenarios considered.