1 files changed, 18 insertions, 0 deletions
diff --git a/3822/CH5/EX5.4/Ex5_4.sce b/3822/CH5/EX5.4/Ex5_4.sce
new file mode 100644
index 000000000..679f6485a
--- /dev/null
+++ b/3822/CH5/EX5.4/Ex5_4.sce
@@ -0,0 +1,18 @@
+
+//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar
+//Example 5.5
+//OS=Windows 10
+////Scilab version Scilab 6.0.0-beta-2(64 bit)
+clc;
+clear;
+
+//given
+lamda=0.85*1e-6;//wavelength of GaAs in m
+n1=3.6;//refractive index
+L=200e-6//length of the cavity in m
+K=L*(2*n1)/lamda;//number of modes
+mprintf("\n Number of modes=%.0f ",K);//the answer vary due to rounding//multiplication by 1e6 to convert the unit to um
+u=2*n1*L;//partial product
+v=(lamda)^2;//partial product
+dellamda=v/u;//separation wavelength between the two mode in m
+mprintf("\nThe separation wavelength between the two mode=%.2f nm",dellamda*1e9);//multiplication by 1e9 to convert the unit to nm// the answer given in textbook is wrong the unit is nm but the textbook gives it as um