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 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "chapter1 - Overview of optical fiber communications"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 1.6.1, page 1-15"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from __future__ import division\n",
      "Bit_rate = 2*10**9       # bit rate of channel\n",
      "# Given sequence is 010111101110\n",
      "Shortest_duration = 1*(1/Bit_rate)      # shortest duration is '1'\n",
      "Widest_duration = 4*(1/Bit_rate)      #widest duration is '1111'\n",
      "Shortest_duration = Shortest_duration        # seconds\n",
      "Widest_duration = Widest_duration      # seconds\n",
      "print \"Shortest duration is %.1g seconds.\" %Shortest_duration\n",
      "print \"Widest duration is %.1g seconds.\" %Widest_duration"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Shortest duration is 5e-10 seconds.\n",
        "Widest duration is 2e-09 seconds.\n"
       ]
      }
     ],
     "prompt_number": 6
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 1.12.1, page 1-28"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from __future__ import division\n",
      "from numpy import log2\n",
      "Bandwidth = 2*10**6      #Bandwidth of channel\n",
      "Signal_to_Noise_ratio = 1               #Signal to Noise ratio of channel\n",
      "Capacity = Bandwidth * log2(1 + Signal_to_Noise_ratio)  #computing capacity\n",
      "Capacity=Capacity/10**6 \n",
      "print \"Maximum capacity of channel is %d Mb/sec.\" %Capacity"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Maximum capacity of channel is 2 Mb/sec.\n"
       ]
      }
     ],
     "prompt_number": 8
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Question 10, page 1-31"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from __future__ import division\n",
      "Bit_rate = 2*10**9       # bit rate of channel\n",
      "# Given sequence is 010111101110\n",
      "Shortest_duration = 1*(1/Bit_rate)      # shortest duration is '1'\n",
      "Widest_duration = 4*(1/Bit_rate)      #widest duration is '1111'\n",
      "Shortest_duration = Shortest_duration        # seconds\n",
      "Widest_duration = Widest_duration      # seconds\n",
      "print \"Shortest duration is %.1g seconds.\" %Shortest_duration\n",
      "print \"Widest duration is %.1g seconds.\" %Widest_duration"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Shortest duration is 5e-10 seconds.\n",
        "Widest duration is 2e-09 seconds.\n"
       ]
      }
     ],
     "prompt_number": 9
    }
   ],
   "metadata": {}
  }
 ]
}