If by “capacity” you mean Bitrate-Distance product, I have tested it and to my surprise I could only achieve 10Gbps for 360km, which is much less than that of any other paper I’ve studied about CO-OFDM since 2007 (for example, in Alatawi’s 2013 master’s thesis at University of Denver, a system with 50Gbps for 6000km was achieved using Optisystem v.12 without exploiting any types of equalizers and so on). So I would also like to know if anyone has tested the system in this regard. Thanks in advance.