A multimode step-index fiber has a core refractive index of 1.5 and relative refractive index difference of 1%. The length of the optical link is 6 km. Estimate the RMS pulse broadening due to intermodal dispersion on the link.
A. 92.6 ns
B. 86.7 ns
C. 69.3 ns
D. 68.32 ns
Answer: Option B
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