| 摘要 |
The present invention is relative to a multimode optical fiber (99) for continuous transmission of electromagnetic radiation at high power, said fiber defining a fiber axis and comprising a core (110) and a cladding (120) surrounding the core, and wherein the multimode optical fiber is a multimode graded-index fiber, the refraction index profile in the fiber essentially following the formula (1) where formula (A), • r is the distance from the fiber axis, • n(r) is the nominal refractive index as a function of distance from the fiber axis, • n1 is the nominal refractive index on the axis of the fiber, • n2 is the refractive index of the cladding, • a is the core radius, and • g is a parameter that defines the shape of the profile, • where the core diameter 2a is comprised between 90 μm and 190 μm, • the parameter g is comprised between 1.2 and 1.8, • and the numerical aperture (NA) of the fiber, where formula (B), • is comprised between 0.2 and 0.3. |
