optical fiber: A filament of transparent dielectric material, usually glass or plastic, and usually circular in cross section, that guides light. (188) Note 1: An optical fiber usually has a cylindrical core surrounded by, and in intimate contact with, a cladding of similar geometry. Note 2: The refractive index of the core must be slightly higher than that of the cladding for the light to be guided by the fiber. Synonym lightguide.
This HTML version of FS-1037C was last generated on Fri Aug 23 00:22:38 MDT 1996