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diff --git a/Solid_state_physics/Chapter_12.ipynb b/Solid_state_physics/Chapter_12.ipynb new file mode 100755 index 00000000..2311a687 --- /dev/null +++ b/Solid_state_physics/Chapter_12.ipynb @@ -0,0 +1,252 @@ +{ + "metadata": { + "name": "" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 12: Fiber Optics" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 12.1, Page number 12.6" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import math\n", + "\n", + "#Variable declaration\n", + "n1 = 1.55 #refractive inde of core\n", + "n2 = 1.50 #refractive index of cladding\n", + "\n", + "#Calculation\n", + "NA = math.sqrt(n1**2-n2**2)\n", + "\n", + "#Result\n", + "print \"Numerical Aperture =\",round(NA,3)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Numerical Aperture = 0.391\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 12.2, Page number 12.6" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import math\n", + "\n", + "#Variable declaration\n", + "n1 = 1.563 #refractive inde of core\n", + "n2 = 1.498 #refractive index of cladding\n", + "\n", + "#Calculation\n", + "NA = math.sqrt(n1**2-n2**2)\n", + "alpha_i = math.degrees(math.asin(NA))\n", + "\n", + "#Result\n", + "print \"Angle of acceptance =\",round(alpha_i,2),\"degrees\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Angle of acceptance = 26.49 degrees\n" + ] + } + ], + "prompt_number": 14 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 12.3, Page number 12.6" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import math\n", + "\n", + "#Variable declaration\n", + "NA = 0.39 #numerical aperture\n", + "delta_n = 0.05 #differnce between refractive indices of core & cladding\n", + "\n", + "#Calculaations\n", + "n1 = NA/math.sqrt(2*delta_n)\n", + "\n", + "#Result\n", + "print \"Refractive index of core =\",round(n1,4)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Refractive index of core = 1.2333\n" + ] + } + ], + "prompt_number": 16 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 12.4, Page number 12.7" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "#Variable declaration\n", + "n1 = 1.563 #refractive inde of core\n", + "n2 = 1.498 #refractive index of cladding\n", + "\n", + "#Calculation\n", + "delta = (n1-n2)/n1\n", + "\n", + "#Result\n", + "print \"Fractional index change for the given fiber is\",round(delta,4)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Fractional index change for the given fiber is 0.0416\n" + ] + } + ], + "prompt_number": 17 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 12.5, Page number 12.7" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import math\n", + "\n", + "#Variable declaration\n", + "n1 = 1.48 #refractive inde of core\n", + "n2 = 1.45 #refractive index of cladding\n", + "\n", + "#Calculations\n", + "NA = math.sqrt(n1**2-n2**2)\n", + "alpha_i = math.degrees(math.asin(NA))\n", + "\n", + "#Result\n", + "print \"Numerical aperture =\",round(NA,4)\n", + "print \"Angle of acceptance =\",round(alpha_i,2),\"degrees\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Numerical aperture = 0.2965\n", + "Angle of acceptance = 17.25 degrees\n" + ] + } + ], + "prompt_number": 18 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 12.6, Page number 12.14" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import math\n", + "\n", + "#Variable declaration\n", + "Pout = 40. #output power(mW)\n", + "Pin = 100. #input power(mW)\n", + "\n", + "#Calculation\n", + "A = -10*math.log10(Pout/Pin) #Attenuation(dB)\n", + "\n", + "#Result \n", + "print \"Attenuation =\",round(A,2),\"dB\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Attenuation = 3.98 dB\n" + ] + } + ], + "prompt_number": 22 + } + ], + "metadata": {} + } + ] +}
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