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//Example 1.15.1 page 1.56..
// Maximum core diameter..
clc;
clear;
n1= 1.48; //RI of core..
del= 0.015; //relative RI differencr..
lamda= 0.85; //wavelength of operation..
V= 2.4; // for single mode of operation..
a= V*lamda/(2*%pi*n1*sqrt(2*del)); //radius of core..
printf('The raduis of core is %.2f um',a);
printf('\n\nThe maximum possible core diameter is %.2f um',2*a);
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