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+//Introduction to Fiber Optics by A. Ghatak and K. Thyagarajan, Cambridge, New Delhi, 1999
+//Example 14.4
+//OS=Windows XP sp3
+//Scilab version 5.5.2
+clc;
+clear;
+//given
+DeltaLambda0=30e-9;//Gain bandwidth in wavelength domain in m
+Lambda0=1550e-9;//central wavelength in wavelength domain in m
+c=3e8;//Speed of light in m/s
+v=c/Lambda0;
+Deltav=DeltaLambda0/Lambda0*v;
+mprintf("\n Gain Bandwidth in frequency domain = %.1f THz",Deltav/1e12);