5/125 micron or 50/125-micron multimode fiber optic cables and terminate with multimode connectors at one end. Multimode pigtails use 62. The connector end plugs into devices like transceivers or patch panels, while the bare end is typically fusion spliced to a fiber optic cable. This setup ensures. For example, according to the fiber type, they can be divided into single-mode fiber optic pigtails and multi-mode fiber optic pigtails; according to the connector type, they can be divided into SC, LC, FC, ST and other pigtails; according to the number of cores, there are single-core, dual-core. Fiber optic pigtails can be divided into single-mode and multimode fibers. Their cladding diameters are both 125µm. Generally, pigtails are utilized in 99% of single mode applications but are also used in many multimode applications.