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+
+//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar
+//Example 3.1
+//OS=Windows 10
+////Scilab version Scilab 6.0.0-beta-2(64 bit)
+clc;
+clear;
+
+//given
+Pin=100;//average optical power in microwatts
+Pout=2.5;//average output power in microwatts
+L=10;//length of fiber in Km
+L1=11//Length of fiber in Km
+Ls=0.8//attenuation per splice in dB
+ns=3//no of splices
+u=1/L;
+v=log10(Pin/Pout);
+alphadB=u*10*v;//total attenuation per Km
+TA=alphadB*L;
+mprintf("\n Total Attenuation=%.2f dB",TA);
+TA11=alphadB*L1;//total attenuation for 11 Km
+mprintf("\n Total Attenuation for 11 Km=%.2f dB",TA11);
+OA=TA11+ns*Ls;//overall attenuation in the link
+mprintf("\n The overall attenuation in the link=%.2f dB",OA);
+PinbyPout=10^(OA/10);//the value of Pin/Pout for 11Km line with splices
+mprintf("\n The value of Pin/Pout for 11Km line with splices=%.2f",PinbyPout);
+//the answer vary due to rounding