The two main types are singlemode and multimode fibers. Singlemode fiber has a small core (8–10 µm) and supports long-distance, high-speed data transmission. Although they can do the same job in some instances, the different construction methods make each of them better suited to certain tasks and budgets. That makes picking between single mode and multimode fiber optic cables an. Unlike copper cables, which rely on electrical signals, fiber optics use pulses of light to transmit data—offering unmatched bandwidth, low interference, and long-distance capabilities. From the fiber core and core size to single mode fiber and multimode fiber cables, each type of optical cable serves a specific purpose depending on transmission distance, network. Two of the most common cable types you'll hear about when implementing a fiber network are single mode and multimode fiber. They both have their sweet spot, and knowing which one fits your organization's needs can help you make the right choice.