Patent ID: 9588285
Date: 2017-03-07
CPC Classifications: G02B

Claim:
1. 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 n said optical fiber having a numerical aperture NA and an optical core radius a satisfying a criterion C of quality of optical communications defined by the following equation: where: NA=√{square root over (n Δ is the normalized refractive index difference, and wherein said minimal and maximal refractive indexes n wherein the optical core comprises an inner optical core and an outer optical core surrounding the inner optical core, and wherein the refractive graded-index profile is a twin alpha graded-index profile n(r) defined by the following equation: r is a variable representative of the radius of said optical fiber, r n n Δ Δ α α