1 files changed, 22 insertions, 0 deletions
diff --git a/848/CH7/EX7.4/Example7_4.sce b/848/CH7/EX7.4/Example7_4.sce
new file mode 100755
index 000000000..6c9b783b7
--- /dev/null
+++ b/848/CH7/EX7.4/Example7_4.sce
@@ -0,0 +1,22 @@
+//clear//
+//Caption: To find the energy of the photon incident on photodiode
+//and Minimum incident optical power
+//Example7.4
+//page 262
+clear;
+clc;
+close;
+h =  6.626e-34; //planks constant J/s
+C = 3e08; //free space velocity in m/s
+B = 10e06; //data rate 10 Mb/sec
+tuo = 2/B; //1/tuo = half the data rate B
+Lambda = 850e-09; //operating wavelength in nm
+E = 20.7*h*C/Lambda;
+Pi = E/tuo;
+disp(E,'Energy of the incident photon E =')
+disp(Pi,'minimum incident optical power Pi =')
+disp(10*log10(Pi*1000),'minimum incident optical power in dBm =')
+//Result
+// Energy of the incident photon E =  4.841D-18  
+// minimum incident optical power Pi = 2.420D-11  
+// minimum incident optical power in dBm =  - 76.161059