Single-mode fiber. Fiber-optic cabling with a narrow core that allows light to enter only at a single angle. Such cabling has higher bandwidth than multimode fiber, but requires a light source with a narrow spectral width (for example, a laser). Also called monomode fiber.

An optical fiber that has a thinner inner core and supports only one mode of light propagation. Single-mode fiber performs better than multi-mode fiber over longer distances at higher transmission rates.

Fiber optic cable in which the signal or light propagates in a single mode or path. Since all light follows the same path or travels the same distance, a transmitted pulse is not dispersed and does not interfere with adjacent pulses. SMF fibers can support up to 17 kilometers and are limited mainly by the amount of attenuation. Refer to MMF.

Single-mode fiber (FDDI networks). A laser-driven optical fiber whose core diameter is small enough to limit transmission to a single bound mode, commonly used in long distance communications in excess of three miles. See also MMF.

Single Mode Fiber optic cable. (7/96)

Single mode fiber. Fiber where light propagates predominately in one mode. Used for maximum distances; usually a small, precise diameter (8-9 microns) fiber of monolithic quartz.

Abbreviation for single-mode fiber.