Corning Incorporated
METHOD FOR MANUFACTURING MULTIMODE OPTICAL FIBERS

Abstract:

A method of manufacturing a multimode optical fiber includes specifying a peak wavelength .lamda..sub.P for the multimode optical fiber. The peak wavelength .lamda..sub.P corresponds to a wavelength at which the multimode optical fiber has a maximum bandwidth. The multimode optical fiber comprises a core and a cladding surrounding and directly adjacent to the core. The core has a radius r.sub.1 and a maximum relative refractive index .DELTA..sub.1,MAX>0. The cladding comprises a depressed-index region having a minimum relative refractive index .DELTA..sub.3,MIN<0 and a volume v. A draw tension T for the multimode optical fiber is selected based on a correlation relating peak wavelength .lamda..sub.P to draw tension T, the correlation comprising a correlation constant. The correlation constant K is a function of at least one of .DELTA..sub.1,MAX, r.sub.1, v, .DELTA..sub.3,MIN, and .lamda..sub.P. The multimode optical fiber is drawn from a preform at the draw tension T.