Patent ID: 9588287
Date: 2017-03-07
CPC Classifications: G02B

Claim:
1. A multimode optical fiber comprising: a core extending along a predetermined axis, doped with GeO a trench part surrounding an outer peripheral surface of the core, doped with fluorine, having a refractive index lower than a maximum refractive index of the core, and having an outside diameter a cladding surrounding an outer peripheral surface of the trench part, having a refractive index lower than the maximum refractive index of the core and higher than the refractive index of the trench part, and having an outside diameter wherein in a cross section of the multimode optical fiber perpendicular to the predetermined axis, an OH group concentration distribution along a radial direction of the multimode optical fiber has a shape in which a concentration peak thereof is located in a concentration control interval where a distance from a center of the core is defined in the range of a/2 to b.