Patent ID: 7995888

Claim:
A multimode optical fiber, wherein the multimode fiber possesses a refractive index profile such that a measurement of the dispersion modal delay (DMD), the DMD graph of which has been modified by adding a delay (Δt trace ) to each trace: Δ ⁢ ⁢ t trace = Δ ⁢ ⁢ λ max × D × L ⁡ ( r trace a ) β where r trace is the center position of the injection of the light pulse corresponding to the trace, a is the core radius of the multimode optical fiber, L is the length of the multimode optical fiber, D is the chromatic dispersion of the multimode fiber at the wavelength of the light pulse, β is the coefficient of the delay, and Δλ max is the maximum spectral width of a source intended to be used with the fiber, gives an equivalent modal dispersion value (DMD inner&outer ), measured at a quarter of the height of the leading edge of the first trace and at a quarter of the height of the trailing edge of the last trace, of less than 0.11 ps/m for (Δλ max ×D)>0.07 ps/m.