WIDE BAND MULTIMODE FIBER OPTIMIZED FOR MULTIMODE AND SINGLE-MODE TRANSMISSIONS

摘要

1. An optical fiber containing an optical core and an optical cladding surrounding this core; wherein the optical core has a gradient profile of the refractive index with a minimum refractive index n and a maximum refractive index n; characterized in that it has a numerical aperture NA and a radius a of the optical core, satisfying the optical communication quality criterion C, defined by the following equation: C = NA-0.02 × a, where: Δ is the normalized difference in refractive indices; and that the minimum and the maximum refractive indices n, po, and the radius a of the optical core are chosen such that NA 0.20, a 10 μm and | C | 0.20.2. The optical fiber according to claim 1, for which the indicated minimum and maximum refractive indices n, n, and the radius a of the optical core are selected such that | C | 0.10.3. The optical fiber according to claim 1 or 2, for which the indicated minimum and maximum refractive indices n, n, and the radius a of the optical core are selected such that | C | 0.05.4. The optical fiber according to claim 1 or 2, for which the indicated minimum and maximum refractive indices n, n, and the radius a of the optical core are selected so that C 0.5. An optical fiber according to claim 1 or 2, wherein the radius of the optical core is a 14 μm, more specifically a 19 μm, and even more specifically a 25 μm. The optical fiber according to claim 1 or 2, wherein said minimum and maximum refractive indices n, n are selected such that NA 0.25, more specifically NA 0.30 and even more specifically NA 0.34.7. The optical fiber according to claim 1 or 2, in which the gradient profile n (r) of the refractive index with a single alpha is described by the following equation: where r≤a, where r is a variable representing the radius of this