An optical fiber in which the refractive index changes gradually between the core and cladding, in a way designed to refract light so it stays in the fiber core. Such fibers have lower dispersion and broader bandwidth than step index fibers.
An optical fiber core designed with a refractive index that gradually decreases as it approaches the cladding. Light rays are refracted within the core rather than reflected as in step-index fibers. Graded index fibers were developed to lessen the modal dispersion effects of multimode fibers. The variance in the time light rays take to travel within the fiber is minimized: rays within the center part that travel a shorter distance of the core travel slower than the longer traveling rays in the outer part. Modal dispersion is reduced, increasing bandwidth potential.
Fiber design of optical fiber having a core refractive index that decreases almost parabolically and radially outward toward the cladding.
A multimode fiber whose core refractive index increases in controlled fashion outward from the axis and matches the cladding refractive index at the core-clad interface. Has greater bandwidth than step index fibre, but less bandwidth than single mode fiber.
An optical fiber with a core having a refractive index that decreases with increasing radial distance from the fiber axis. Note: The most common refractive index profile for a graded-index fiber is very nearly parabolic. The parabolic profile results in continual refocusing of the rays in the core, and compensates for multimode distortion. Learn more about Graded Index Fiber...
An optical fiber whose core has a nonuniform index of refraction. The differences in the refractive index reduce signal spreading caused by modal dispersion.