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// Example 2.1
// Calculation of core diameter
// Page no 31
clc;
clear;
close;
// Given data
n1=1.5; // Refractive index of core
n2=1.48; // Refractive index of cladding
N=1000; // No of modes
lambda=1.3; // Light wavelength
V=sqrt(2*N); // Mode parameter
//core diameter
d=(lambda*V)/(2*%pi*sqrt(n1^2-n2^2));
//Display result on command window
printf("\n Mode parameter = %0.2f ",V);
printf("\n Core diameter(micrometer)= %0.0f ",d);
// Answer is wrong in the book.
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