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// Example 7.2.1 page 7.11
clc;
clear;
n1=3.4; //refractive index of optical source
n=1.46; //refractive index of silica fiber
r=((n1-n)/(n1+n))^2; //computing Frensel reflection
L=-10*log10(1-r); //computing loss
printf("\nFrensel reflection is %.3f.\nPower loss is %.2f dB.",r,L);
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