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authorpriyanka2015-06-24 15:03:17 +0530
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+//Chapter-3,Example3_4_1,pg 3-10
+
+d=29*10^-6 //diameter of core of step index fibre
+
+wavelength=1.3*10^-6 //wavelength of light
+
+n1=1.52 //refractive index of core
+
+n2=1.5189 //refractive index of cladding
+
+V=%pi*d*sqrt(n1^2-n2^2)/wavelength //Normalized frequency of the fibre
+
+printf("\nThe normalised frequency of fibre is V = %.3f\n",V)
+
+N=V^2/2 //The number of modes
+
+printf("\nThe number of modes = %.f\n",N)