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// Example 9.2
// Calculation of the total power at the fiber output.
// Page no 393
clc;
clear;
close;
//Given data
p=0; // Power per channel
fl=0.2; // Fiber loss
f=50; // Wavelength
// The total power at the fiber output.
pc=10^(0.1*p);
tp=pc*11;
tp1=10*log10(tp);
tfl=fl*f;
to=tp1-tfl;
//Displaying results in the command window
printf("\n The total power at the fiber output = %0.3f dBm ",to);
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