Mode-Group Division Multiplexing: Transmission, Node Architecture, and Provisioning

Few Mode Fibers (FMF) and Space DivisionMultiplexing (SDM) are an attractive solution to offer high capacity in optical networks. Although transmission along FMF presents several issues mainly due the cross-talk among modes, use of Multiple Input Output (MIMO) coherent receivers permits limit impact such physical impairment. However, complexity MIMO is not negligible (especially with a large number modes) spatial modes must cover same path, thus limiting network flexibility, e.g., routing different paths admitted. In this paper we exploit concept Mode-Group Division Multiplexing (MGDM) investigate architecture provisioning supporting MGDM. Modes divided groups: within group co-routed received reduced-complexity receiver, while groups can be routed paths. Different node architectures MGDM presented taking account state-of-the-art components devices, even commercially available on market. A quality (QoT) model also accounting inter mode crosstalk, that cannot neglected reach evaluation. QoT exploited by proposed connection scheme for Simulations carried out metro/rural scenarios link span lengths. show throughput increase receivers.