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Diffstat (limited to '3834/CH11/EX11.3.4/Ex11_3_4.sce')
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diff --git a/3834/CH11/EX11.3.4/Ex11_3_4.sce b/3834/CH11/EX11.3.4/Ex11_3_4.sce new file mode 100644 index 000000000..4ec73e5ca --- /dev/null +++ b/3834/CH11/EX11.3.4/Ex11_3_4.sce @@ -0,0 +1,28 @@ +//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner
+//Example 11.3.4
+//windows 7
+//Scilab version-6.0.0
+clc;
+clear;
+//given
+
+NEPnorm1=3.3E-12;//Bandwidth normalised NEP in W/sqrt(Hz) from 0-10MHz
+BW1=10E+6;//Bandwidth for case 1 in Hz
+
+x=NEPnorm1*sqrt(BW1);
+
+NEPnorm2=30E-12;//Bandwidth normalised NEP in W/sqrt(Hz)from 10-125 MHz
+BW2=115E+6;//Bandwidth for case 2 in Hz
+
+y=NEPnorm2*sqrt(BW2);
+
+NEP=sqrt(x^2+y^2);
+mprintf("Noise-Equivalent power(NEP) = %.1f nW",NEP*1E+9);
+
+Rmax=1.1;//Maximum value of responsivity of a photodiode in A/W at 1550nm
+Rlambda=0.9;//Responsivity of a photodiode for given wavelength 1300nm in A/W
+BW=125E+6;//Bandwidth in Hz
+NEPlambda1=NEPnorm2*(Rmax/Rlambda)*sqrt(BW);
+mprintf("\nNoise-Equivalent power(NEP) for given wavelength lambda=1550nm = %.1f nW",NEPlambda1*1E9);
+
+
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