summaryrefslogtreecommitdiff
path: root/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb
diff options
context:
space:
mode:
Diffstat (limited to 'Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb')
-rw-r--r--Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb245
1 files changed, 245 insertions, 0 deletions
diff --git a/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb b/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb
new file mode 100644
index 00000000..37280337
--- /dev/null
+++ b/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb
@@ -0,0 +1,245 @@
+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter2 - Ray propagation in optical fiber"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 2.1 : Page 21"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "part (a)\n",
+ "numerical aperture is 0.244\n",
+ "part (b)\n",
+ "angle αm = 14.13 degree\n",
+ "angle Om = 9.37 degree\n",
+ "angle Φc = 80.63 degree\n",
+ "part (c)\n",
+ "pulse broadning per unit length = 6.76e-11 sm**-1\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import degrees, asin, sqrt\n",
+ "#NA ,angles and pulse broadning\n",
+ "print \"part (a)\"\n",
+ "n1=1.5##core refrative index\n",
+ "n2=1.48##claddin refractive index\n",
+ "a=100/2##radius in micro meter\n",
+ "na=1##air refrative index\n",
+ "NA=sqrt(n1**2-n2**2)##numerical aperture\n",
+ "print \"numerical aperture is %0.3f\"%NA\n",
+ "print \"part (b)\"\n",
+ "am=(asin(NA))##\n",
+ "tm=asin(NA/n1)##\n",
+ "tc=asin(n2/n1)##\n",
+ "print \"angle αm = %0.2f degree\"%degrees(am)\n",
+ "print \"angle Om = %0.2f degree\"%degrees(tm)\n",
+ "print \"angle Φc = %0.2f degree\"%degrees(tc)\n",
+ "print \"part (c)\"\n",
+ "c=3*10**8##speed of light in m/s\n",
+ "dtl=((n1/n2)*(n1-n2)/c)##pulse broadning per unit length\n",
+ "print \"pulse broadning per unit length = %0.2e sm**-1\"%dtl"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 2.2 : Page 22"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 5,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "all other rays will suffer reflections between these two extremes of : 0 and 1650.0 m**-1\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import tan\n",
+ "#minimum and maximum number of reflections\n",
+ "n1=1.5##core refrative index\n",
+ "n2=1.48##claddin refractive index\n",
+ "a=100/2##radius in micro meter\n",
+ "na=1##air refrative index\n",
+ "NA=sqrt(n1**2-n2**2)##numerical aperture\n",
+ "am=(asin(NA))##\n",
+ "tm=asin(NA/n1)##\n",
+ "tc=asin(n2/n1)##\n",
+ "L=((a*10**-6)/(tan(tm)))##length in meter\n",
+ "x=(1/(2*L))##maximum number of reflections per meter\n",
+ "print \"all other rays will suffer reflections between these two extremes of :\",(0),\" and \",round(x),\" m**-1\"\n",
+ "#answer is wrong in the textbook"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 2.3 : Page 27"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 6,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "pulse broadning = 2.45 ns km**-1\n"
+ ]
+ }
+ ],
+ "source": [
+ "#pulse broadning\n",
+ "h=0.85##WAVELENGTH IN MICRO METER\n",
+ "y=0.035##spectral width\n",
+ "c=0.021##constant\n",
+ "cl=3##speed of light in m/s\n",
+ "dtl=(y/cl)*c##\n",
+ "print \"pulse broadning = %0.2f ns km**-1\"%(dtl*10**4)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 2.4 : Page 27"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "part (a)\n",
+ "material dispersion = 253.20 ns when h=850nm\n",
+ "part (b)\n",
+ "material dispersion = 6.72 ns when h=1300nm\n"
+ ]
+ }
+ ],
+ "source": [
+ "#pulse broadning\n",
+ "print \"part (a)\"\n",
+ "h=850##WAVELENGTH IN NANO METER\n",
+ "l=80##fiber length in Km\n",
+ "dh=30##in Nano Meter\n",
+ "m1=105.5##material dispersion for h=850nm in ps/nm-Km\n",
+ "m2=2.8##material dispersion for h=1300nm in ps/nm-Km\n",
+ "t=m1*l*dh*10**-3##material dispersion in ns when h=850nm\n",
+ "print \"material dispersion = %0.2f ns when h=850nm\"%t\n",
+ "print \"part (b)\"\n",
+ "h=1300##WAVELENGTH IN NANO METER\n",
+ "l=80##fiber length in Km\n",
+ "dh=30##in Nano Meter\n",
+ "m1=105.5##material dispersion for h=850nm in ps/nm-Km\n",
+ "m2=2.8##material dispersion for h=1300nm in ps/nm-Km\n",
+ "t=m2*l*dh*10**-3##material dispersion in ns when h=850nm\n",
+ "print \"material dispersion = %0.2f ns when h=1300nm\"%t"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 2.5 : Page 28"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 9,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "part (a)\n",
+ "material dispersion = 16.88 ns when h=850nm\n",
+ "part (b)\n",
+ "material dispersion = 0.448 ns when h=1300nm\n"
+ ]
+ }
+ ],
+ "source": [
+ "# pulse broadning\n",
+ "print \"part (a)\"\n",
+ "h=850##WAVELENGTH IN NANO METER\n",
+ "l=80##fiber length in Km\n",
+ "dh=2##in Nano Meter\n",
+ "m1=105.5##material dispersion for h=850nm in ps/nm-Km\n",
+ "m2=2.8##material dispersion for h=1300nm in ps/nm-Km\n",
+ "t=m1*l*dh*10**-3##material dispersion in ns when h=850nm\n",
+ "print \"material dispersion = %0.2f ns when h=850nm\"%t\n",
+ "print \"part (b)\"\n",
+ "h=1300##WAVELENGTH IN NANO METER\n",
+ "l=80##fiber length in Km\n",
+ "dh=2##in Nano Meter\n",
+ "m1=105.5##material dispersion for h=850nm in ps/nm-Km\n",
+ "m2=2.8##material dispersion for h=1300nm in ps/nm-Km\n",
+ "t=m2*l*dh*10**-3##material dispersion in ns when h=850nm\n",
+ "print \"material dispersion = %0.3f ns when h=1300nm\"%t"
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 2",
+ "language": "python",
+ "name": "python2"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 2
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython2",
+ "version": "2.7.9"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
generated by cgit (git 2.34.1) at 2024-12-20 10:03:14 +0000