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+// Example 2.8
+// Calculation of threshold power of stimulated Brillouin scattering and Raman Scattering
+// Page no 52
+
+clc;
+clear;
+close;
+
+// Given data
+A=0.5;                       // Attenuation
+d=5;                         // Core diameter
+lambda=1.3;                  // Operating wavelength
+v=0.7;                       // Bandwith of laser diode
+
+// Threshold power of stimulated Brillouin scattering
+Pb=4.4*10^-3*d^2*lambda^2*A*v;
+Pb=Pb*10^3;
+
+//Threshold power stimulated Raman Scattering
+Pr=5.9*10^-2*d^2*lambda*A; 
+
+//Display result on command window
+printf("\n Threshold power of stimulated Brillouin scattering (in mW) = %0.2f ",Pb);
+printf("\n Threshold power stimulated Raman Scattering (in W)= %0.2f",Pr);
+
+