Method for selecting wide-band multimode optical fibers from a single wavelength characterization, the method comprising the following steps of, for each multimode optical fiber: - obtaining with a processor a first differential mode delay, DMD, plot using a measurement of dispersion modal delay carried out on said multimode optical fiber at a first single wavelength of 850 nm, the DMD plot comprising a plurality of traces each recorded at a different radial offset value r, from an axis of said multimode optical fiber where r = 0 to a radial offset value r = a, where a is the core radius of said multimode optical fiber, - obtaining with the processor, from the first DMD plot, at least one first multimode fiber specification parameter at said single wavelength,; characterized in that said at least one first multimode fiber specification parameter belonging to the group comprising an effective modal bandwidth or an over-filled launch bandwidth and in that the method comprises steps of, for each multimode optical fiber: - obtaining with the processor, from the first DMD plot, a curve representative of a radial offset delay of said multimode optical fiber, called ROD curve, as a function of the radial offset value r, 0 ≤ r ≤ a; - applying with the processor a linear fit on the ROD curve for at least one radial offset value range (A, B, C); - obtaining with the processor, from said linear fit applied for each radial offset value range, a radial offset delay slope called ROD slope (s A, s B, s C); and in that the method comprises a step of selecting with the processor the multimode optical fibers meeting a first predetermined specification criterion for said at least one first multimode fiber specification parameter, and for which said at least one computed ROD slope meets at least one predetermined slope criterion. - obtaining with a processor a first differential mode delay, DMD, plot using a measurement of dispersion modal delay carried out on said multimode optical fiber at a first single wavelength of 850 nm, the DMD plot comprising a plurality of traces each recorded at a different radial offset value r, from an axis of said multimode optical fiber where r = 0 to a radial offset value r = a, where a is the core radius of said multimode optical fiber, - obtaining with the processor, from the first DMD plot, at least one first multimode fiber specification parameter at said single wavelength,; characterized in that said at least one first multimode fiber specification parameter belonging to the group comprising an effective modal bandwidth or an over-filled launch bandwidth and in that the method comprises steps of, for each multimode optical fiber: - obtaining with the processor, from the first DMD plot, a curve representative of a radial offset delay of said multimode optical fiber, called ROD curve, as a function of the radial offset value r, 0 ≤ r ≤ a; - applying with the processor a linear fit on the ROD curve for at least one radial offset value range (A, B, C); - obtaining with the processor, from said linear fit applied for each radial offset value range, a radial offset delay slope called ROD slope (s A, s B, s C); - obtaining with the processor, from the first DMD plot, a curve representative of a radial offset delay of said multimode optical fiber, called ROD curve, as a function of the radial offset value r, 0 ≤ r ≤ a; - applying with the processor a linear fit on the ROD curve for at least one radial offset value range (A, B, C); - obtaining with the processor, from said linear fit applied for each radial offset value range, a radial offset delay slope called ROD slope (s A, s B, s C); and in that the method comprises a step of selecting with the processor the multimode optical fibers meeting a first predetermined specification criterion for said at least one first multimode fiber specification parameter, and for which said at least one computed ROD slope meets at least one predetermined slope criterion.