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

---
 1619/CH1/EX1.14.12/Example1_14_12.sce | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100755 1619/CH1/EX1.14.12/Example1_14_12.sce

(limited to '1619/CH1/EX1.14.12/Example1_14_12.sce')

diff --git a/1619/CH1/EX1.14.12/Example1_14_12.sce b/1619/CH1/EX1.14.12/Example1_14_12.sce
new file mode 100755
index 000000000..776dc98c3
--- /dev/null
+++ b/1619/CH1/EX1.14.12/Example1_14_12.sce
@@ -0,0 +1,25 @@
+//Example 1.14.12
+//To find noramlised frequency and number of modes
+
+clc;
+clear;
+
+lamda= 850*10^-9;       //wavelength of operation.
+a= 25*10^-6;        //Radius of core
+n1= 1.48;       //RI of Core...
+n2= 1.46;       //RI of cladding..
+
+NA= sqrt(n1^2-n2^2);    //Numerical Aperture
+
+V= 2*%pi*a*NA/lamda;    //Normalised frequency..
+printf('The normalised frequency is %.2f',V);
+
+lamda1= 1320*10^-9;     // wavelength changed...
+V1= 2*%pi*a*NA/lamda1;  //Normalised frequency at new wavelength..
+
+M= V1^2/2;      //Number of modes at new wavelength..
+printf("\n\nThe number of modes in the fibre at 1320um are %d",M);
+lamda2= 1550*10^-9;     //wavelength 2...
+V2= 2*%pi*a*NA/lamda2;  //New normalised frequency..
+M1= V2^2/2; // number of modes..
+printf("\n\nThe number of modes in the fibre at 1550um are %d",M1);
-- 
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