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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /3415/CH11/EX11.6/Ex11_6.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '3415/CH11/EX11.6/Ex11_6.sce')
| -rw-r--r-- | 3415/CH11/EX11.6/Ex11_6.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/3415/CH11/EX11.6/Ex11_6.sce b/3415/CH11/EX11.6/Ex11_6.sce new file mode 100644 index 000000000..e4df7ea77 --- /dev/null +++ b/3415/CH11/EX11.6/Ex11_6.sce @@ -0,0 +1,19 @@ +//fiber optic communications by joseph c. palais
+//example 11.6
+//OS=Windows XP sp3
+//Scilab version 5.4.1
+clc
+clear all
+//given
+lambda=0.82e-6//wave length in m
+h=6.63e-34//planks constant
+tau=1e-6//bit period in Sec
+c=3e8//light speed in m/s
+ns=10//no. of photons required per bit
+eta=1//Quantum efficiency
+Pt=146*10^-9//power in thermal system from Ex11.5=146nW
+//to find
+P=(h*c*ns)/(eta*lambda*tau)// optic power in W
+mprintf("Power=%fpW",P*10^12)
+sensitivity=10*log10(Pt/P)//The shot noise limited system sensitivity
+mprintf("\nThe shot noise limited system is more sensitive by=%fdB",sensitivity)
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