Yes, 5G requires fiber optic cable. No fiber optic cable is required from the base station to the user end, but a large amount of fiber optic cables are required for data aggregation transmission from the base station. 5G is characterized by large bandwidth and low latency, which requires upgrading of transmission equipment. 5G fronthaul 25G optical modules, supporting semi-active equipment, can save fiber optical cables. The backbone network will also be expanded using Gigabit, 10 Gigabit, 100G/200G optical modules, and two-core fiber optical cables will be expanded in OTN transmission equipment, depending on the configuration method.