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Diffstat (limited to '3547/CH3/EX3.9/Ex3_9.sce')
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1 files changed, 26 insertions, 0 deletions
diff --git a/3547/CH3/EX3.9/Ex3_9.sce b/3547/CH3/EX3.9/Ex3_9.sce new file mode 100644 index 000000000..a8ca77c3c --- /dev/null +++ b/3547/CH3/EX3.9/Ex3_9.sce @@ -0,0 +1,26 @@ +// Example no.3.9
+// To calculate a) the frequency separation between modes (b) the wavelength separation between modes
+// Page no.133
+
+clc;
+clear;
+
+// Given data
+lambda=1.3*10^-6; // Laser diode operating wavelength
+L=300*10^-6; // Cavity length
+n=3.5; // Refractive index of active region
+c=3*10^8; // Speed of ligth in air (m/s)
+
+// a)The frequency separation between modes
+deltaf=c/(2*n*L); // The frequency separation between modes in GHz
+
+// Displaying the result in command window
+printf('\n The frequency separation between modes = %0.1f GHz',deltaf*10^-9);
+
+// (b)The wavelength separation between modes
+deltalambda=(lambda^2*deltaf)/c; // The wavelength separation between modes
+
+// Displaying the result in command window
+printf('\n The wavelength separation between modes = %0.1f nanometer',deltalambda*10^9);
+
+// The wrong unit is givan in book
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