initial commit / add all books

1 files changed, 13 insertions, 0 deletions

diff --git a/2411/CH8/EX8.5/Ex8_5.sce b/2411/CH8/EX8.5/Ex8_5.sce
new file mode 100755
index 000000000..80d3cdccf
--- /dev/null
+++ b/2411/CH8/EX8.5/Ex8_5.sce
@@ -0,0 +1,13 @@
+// Scilab Code Ex8.5: Page-398 (2008)
+clc; clear;
+n1 = 1.51;  // Refractive index of the core material
+n2 = 1.47;   // Refractive index of the cladding 
+NA = sqrt(n1^2-n2^2);   // Numerical aperture of the optical fibre
+n0 = 1;     // Refractive index of air
+theta_a = asin(NA/n0);  // Acceptance angle of the optical fibre, rad
+printf("\nThe numerical aperture of the optical fibre = %6.4f", NA);
+printf("\nThe acceptance angle of the optical fibre = %4.2f degrees", theta_a*180/3.14);
+
+// Result 
+// The numerical aperture of the optical fibre = 0.3453
+// The acceptance angle of the optical fibre = 20.21 degrees