From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 848/CH3/EX3.2/Example3_2.sce | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 848/CH3/EX3.2/Example3_2.sce

(limited to '848/CH3/EX3.2')

diff --git a/848/CH3/EX3.2/Example3_2.sce b/848/CH3/EX3.2/Example3_2.sce
new file mode 100755
index 000000000..bfb8a1d2c
--- /dev/null
+++ b/848/CH3/EX3.2/Example3_2.sce
@@ -0,0 +1,20 @@
+//clear//
+//Caption: To Calculate input and output power in dBm
+//Example3.2
+//page 91
+clear;
+close;
+clc;
+Pin = 200e-06; //power launched into the fiber
+alpha = 0.4; //attenuation in dB per KM
+z = 30;  //optical fiber length 30 KM
+Pin_dBm = 10*log10(Pin/1e-03);
+Pout_dBm = 10*log10(Pin/1e-03)-alpha*z;
+Pout = 10^(Pout_dBm/10)
+disp(Pin_dBm,'Pin_dBm')
+disp(Pout_dBm,'Pout_dBm')
+disp(Pout*1e-03,'Output power in watts')
+//Result
+//Pin_dBm =   - 6.9897  
+//Pout_dBm =     - 18.9897
+//Output power in watts  =  0.0000126   
-- 
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