Patent ID: 6449416
Filing Date: 2002-09-10
Classification: G02B

Abstract:
A dispersion shifted optical fiber, comprising:a first core having a constant refractive index n1 within a predetermined radius from a center of an optical fiber; a second core covering the first core, the second core having a refractive index which decreases in value from a value of a refractive index of the first core with an increase in radius of the second core in a direction from the center of the optical fiber; and a cladding covering the second core, the cladding having a refractive index n0 that is smaller than a minimum refractive index n2 of the second core, whereby n021, and a dispersion and a dispersion slope for the dispersion shifted optical fiber being adjusted by controlling n1, n2, and a ratio of a first core radius of the first core and a second core radius of the second core to provide a low dispersion and a low dispersion slope for the dispersion shifted optical fiber.