Question

Using the appropriate figure, estimate the total chromatic dispersion at 1550 nm of a step-index figure having a core radius of 3 um.

Answer 1

As per the given question,

wavelength $(\lambda)=1550nm = 1550 \times 10^{-9}m$

Radius $(R)=3\mu m = 3\times 10^{-6}m$

Hence depression $=D\lambda = 1550 \times 10^{-9}\times 3\times 10^{-6}=4650\times 10^{-15}=4.65\times 10^{-12}$