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clear
//
//
//
//Variable declaration
n1=1.50 //Core refractive index
delta=4/100 //fractional index change
//Calculation
n2=n1-(delta*n1) //Cladding refractive index
NA=sqrt(n1**2-n2**2) //numerical aperture
theta0=asin(NA) //acceptance angle(radian)
theta0=theta0*180/%pi //acceptance angle(degrees)
theta0m=60*(theta0-int(theta0)) //acceptance angle(minutes)
thetac=asin(n2/n1) //critical angle(radian)
thetac=thetac*180/%pi //critical angle(degrees)
thetacm=60*(thetac-int(thetac)) //critical angle(minutes)
//Result
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