3.10 Assume that a step-index fiber has a Vnumber of 6.0. (a) Using Fig. 2.27, estimate the fractional power Plad/Ptraveling in the cladding for the six lowest-order LP modes. (b) If the fiber in (a) is a glass-core glass-clad fiber having core and cladding attenuations of 3.0 and 4.0 dB/km, respectively, find the attenuations for each of the six lowest- order modes. 2a V = 2xa(m m) - 200 11/2 2a NA 3.10 Assume that a step-index fiber has a Vnumber of 6.0. (a) Using Fig. 2.27, estimate the fractional power Plad/Ptraveling in the cladding for the six lowest-order LP modes. (b) If the fiber in (a) is a glass-core glass-clad fiber having core and cladding attenuations of 3.0 and 4.0 dB/km, respectively, find the attenuations for each of the six lowest- order modes. 2a V = 2xa(m m) - 200 11/2 2a NA