Multi-mode fiber is an optical fiber whose core diameter is large compared with the optical wavelength, allowing it to carry many modes, suited to shorter-distance links.
Multimode fiber has a core diameter large compared with the wavelength of the light it carries, which allows many modes, or light paths, to propagate through it at once. This relatively large core makes it easier to couple light into the fiber and to work with at connections, which is one reason multimode fiber is common in shorter-distance applications within buildings and campuses.
Because multimode fiber carries many modes, the differing path lengths cause modal dispersion that spreads pulses and limits bandwidth over distance. As a result, multimode fiber is well suited to shorter runs with high bandwidth needs, while single-mode fiber is preferred for the longest distances. Higher grades of multimode fiber are engineered to reduce dispersion and extend their useful reach.
In commercial and industrial communication, multimode fiber supports data, video, and network links within facilities where distances are moderate and bandwidth demands are high. Selecting the appropriate fiber type and grade helps match the link to its distance and data requirements.
Because its larger core is easier to couple and work with, multimode fiber suits the shorter, high-bandwidth links common within buildings and campuses, while the dispersion that comes with many modes reserves the longest runs for single-mode fiber.
At Windy City Wire, the focus on fiber optic cable for commercial communication includes multimode fiber for the shorter, high-bandwidth links common within facilities. Supplying quality multimode fiber helps ensure dependable performance for data and video distribution across commercial systems.