Graded-index Fiber
An optical fiber whose core refractive index decreases continuously from the central axis outward toward the cladding.
Governing formula
n(r) = n0 √(1 - 2 Δ (r/a)^g)
SI unit
N/A
In depth
Continuously bends light rays in smooth sinusoidal paths rather than sharp zig-zags, equalizing travel times for different modes and reducing modal dispersion.
Examples in the real world
High-bandwidth local area network (LAN) fiber links operating over medium distances.