Definitions for "Single Mode Fiber"
An optical waveguide (or fiber) in which the signal travels in one mode. The fiber has a small core diameter, typically 9 um.
A fiber having a small core diameter and in which only one mode will propagate at the wavelengths of interest.
An optical fiber that supports only one propagation mode. It has much less loss than multimode fiber and is used by telephone and cable TV companies for long distance applications. The core diameter is typically 9m m.