Data plane elements for optical performance monitoring agnostic to the modulation format for disaggregated optical networks

In this paper, data plane alternatives for optical performance monitoring are presented as enablers to address the key challenges in disaggregated optical networks. In fact, a key element of the disaggregated networks is optical performance monitoring that is expected to deliver the feedback needed by the control plane to guarantee end-to-end quality of transmission and quality of service. Therefore, we will discuss data plane elements for non-intrusive monitoring agnostic to the modulation format, proposing and analyzing different schemes. Furthermore, we will also review the relevant figures of merit to be delivered to the /SDN/ control, orchestration and management planes and their potential impact on the network performance.