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+
+//Optoelectronics and Fiber Optics Communication by C.R. Sarkar and D.C. Sarkar
+//Example 2.4
+//OS = Windows 7
+//Scilab version 5.5.2
+
+clc;
+clear;
+
+//given
+a=5*10^-6;//radius in m
+Vc=2.405;//cut off value of V-parameter for single mode
+n1=1.46;//refractive index of the core
+delta=0.0025;//refractive index difference between the core and cladding
+c1=(2*delta)^0.5;//constant value
+c2=(2*%pi*a)/Vc;//constant value
+lamdac=c2*n1*c1;//cut off wavelength in m
+mprintf("\n Cut-off Wavelength is = %.2f um ",lamdac*1e6);//multiplication by 1e6 to convert the unit from m to um
+//The answer vary due to rounding