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clear
//
//
//
//Variable declaration
n1=1.5; //core refractive index
n2=1.45; //cladding refractive index
//Calculations
delta=(n1-n2)/n1; //relative difference
NA=n1*sqrt(2*delta); //numerical aperture
i0=asin(NA); //acceptance angle(radian)
i0=i0*180/%pi ; //acceptance angle(degrees)
theta_c=asin(n2/n1); //critical angle(radian)
theta_c=theta_c*180/%pi ; //critical angle(degrees)
//Result
printf("\n numerical aperture is %0.4f ",NA)
printf("\n acceptance angle is %0.2f degrees",i0)
printf("\n critical angle is %0.2f degrees",theta_c)
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