Exceptional Bandwidth and Data Rates: With modal dispersion removed, single mode fiber optic cable supports virtually limitless bandwidth potential. It forms the foundation for terabits-per-second data transmission over a single strand, easily handling 100G, 400G, 800G, and. In fiber-optic communication, a single-mode optical fiber, also known as fundamental- or mono-mode, is an optical fiber designed to carry only a single mode of light - the transverse mode. Single-mode fiber allows only one transmission mode. Maximum bandwidths and corresponding distances for singlemode are: 10 km for 10-gigabit Ethernet at 1310nm and 80-100km at 1550nm.