Optical Fiber Communications 4th Edition by Gerd Keiser

Exercise 20

Plot the refractive-index profiles from n 1 to n 2 as a function of radial distance r a for graded-index fibers that have a values of 1, 2, 4, 8, and (step index). Assume the fibers have a 25- m core radius, n 1 = 1.48, and = 0.01.