HIGH BANDWIDTH MULTIMODE OPTICAL FIBER OPTIMIZED FOR MULTIMODE AND SINGLE-MODE TRANSMISSIONS

摘要

It is proposed an optical fiber comprising an optical core and an optical cladding surrounding the optical core, the optical core having a refractive graded-index profile with a minimal refractive index n1 and a maximal refractive index n0, said optical fiber being such that it has a numerical aperture NA and an optical core radius a satisfying a criterion C of quality of optical communications defined by the following equation: C = NA - 0.02 x a where: &Dgr; is the normalized refractive index difference, and in that said minimal and maximal refractive indexes nu n0 and said optical core radius « are chosen such that NA > 0.20, a > 10μm and |c| < 0.20.