Patent ID: 6307992
Filing Date: 2001-10-23
Classification: B29D,G02B

Abstract:
A graded index type optical fiber having a multilayer structure, comprising:a plurality of concentrically arranged layers, each of said layers being formed of one (co)polymer selected from the group consisting of two or more (homo)polymers HP1, HP2, . . . Hpn, wherein n is an integer of 2 or greater, derived from monomers M1, M2, . . . , Mn, respectively, and having refractive indices decreasing in that order, and one or more copolymers derived from said monomers, said multilayer structure being such that a mixed layer consisting of a mixture of two (co)polymers each of which constitutes the polymer of one of the two adjacent layers is formed therebetween, and the refractive index is highest at the center and decreases gradually toward the outer periphery.