Added(A)/Deleted(D) following books

 A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter10.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter11.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter13.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter4.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter5.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter6.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter7.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter8.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter9.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/3.png
A  sample_notebooks/LalitKumar/Ch3.ipynb

1 files changed, 259 insertions, 0 deletions

diff --git a/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12.ipynb b/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12.ipynb
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+++ b/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12.ipynb
@@ -0,0 +1,259 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter12 - Fiber-optic communiation systems"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.1 : Page 299"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "maximum possible link length = 8.00 km\n",
+      "total rise time of the system in ns is 30.0\n"
+     ]
+    }
+   ],
+   "source": [
+    "from __future__ import division\n",
+    "from math import sqrt, pi\n",
+    "#link length and reise time\n",
+    "af=2.5##dB/km\n",
+    "ac=0.5##dB/splice\n",
+    "nc=1##\n",
+    "lc=1##dB\n",
+    "ncc=2##\n",
+    "plx=-10##dBm\n",
+    "prx=-42##dBm\n",
+    "Ms=6##dB\n",
+    "L=((plx-prx-Ms-(lc*ncc))/(af+ac))##\n",
+    "TTX=12##NS\n",
+    "TRX=11##NS\n",
+    "NS1=3##NS/KM\n",
+    "NS2=1##NS/KM\n",
+    "tmat=(NS1*L)##ns\n",
+    "tint=(NS2*L)##ns\n",
+    "tsys=sqrt((TTX**2+tmat**2+tint**2+TRX**2))##ns\n",
+    "print\"maximum possible link length = %0.2f km\"% L\n",
+    "print \"total rise time of the system in ns is\",round(tsys)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.2: Page 305"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "part (a)\n",
+      "maximum possible link length = 4.71 km\n",
+      "part (b)\n",
+      "system bandwidth = 8.00 MHz\n"
+     ]
+    }
+   ],
+   "source": [
+    "## link length and bandwidth\n",
+    "print \"part (a)\"\n",
+    "af=3##dB/km\n",
+    "ac=0.5##dB/splice\n",
+    "nc=1##\n",
+    "lc=1##dB\n",
+    "ncc=1.5##\n",
+    "plx=0##dBm\n",
+    "prx=-25##dBm\n",
+    "Ms=7##dB\n",
+    "L=((plx-prx-Ms-(lc*ncc))/(af+ac))##\n",
+    "TTX=12##NS\n",
+    "TRX=11##NS\n",
+    "NS1=3##NS/KM\n",
+    "NS2=1##NS/KM\n",
+    "tmat=(NS1*L)##ns\n",
+    "tint=(NS2*L)##ns\n",
+    "tsys=sqrt((TTX**2+tmat**2+tint**2+TRX**2))##ns\n",
+    "print \"maximum possible link length = %0.2f km\"%L\n",
+    "print \"part (b)\"\n",
+    "af=3##dB/km\n",
+    "ac=0.5##dB/splice\n",
+    "nc=1##\n",
+    "lc=1##dB\n",
+    "ncc=1.5##\n",
+    "plx=-0##dBm\n",
+    "prx=-25##dBm\n",
+    "Ms=7##dB\n",
+    "L=((plx-prx-Ms-(lc*ncc))/(af+ac))##\n",
+    "TTX=1##NS\n",
+    "TRX=5##NS\n",
+    "NS1=9##NS/KM\n",
+    "NS2=2##NS/KM\n",
+    "tf=((NS1*L)**2+(NS2*L)**2)##\n",
+    "tsys=sqrt((TTX**2+tf+TRX**2))##ns\n",
+    "df=0.35/(tsys*10**-3)##\n",
+    "print \"system bandwidth = %0.2f MHz\"%round(df)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.3 : Page 310"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "no. of subscribers are 38.0\n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import log10\n",
+    "#no. of subscribers\n",
+    "pt=1##mW\n",
+    "pn=-40##dBm\n",
+    "pn1=10**(pn/10)##\n",
+    "c=0.05##\n",
+    "d=0.11##\n",
+    "x=((pn1)/(pt*c))##\n",
+    "y=((log10(x))/(log10((1-d)*(1-c))))##\n",
+    "n=y+1##\n",
+    "print \"no. of subscribers are\",round(n)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.4: Page 311"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Total power, P_tot = 92.4 mW\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Total power\n",
+    "#given data :\n",
+    "L_eff=20## in km\n",
+    "del_lamdaC=125## in nm\n",
+    "gR=6*10**-14## m/W\n",
+    "A_eff=55*10**-12## in m**2#\n",
+    "del_lamdaS=0.8## in nm\n",
+    "N=32## number of channels\n",
+    "F=0.1##  constant\n",
+    "P_tot=(4*F*del_lamdaC*A_eff)/(gR*del_lamdaS*L_eff*(N-1))#\n",
+    "print \"Total power, P_tot = %0.1f mW\"%P_tot"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.5 : Page 312"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "SBS threshold power for the worst case = 8.66 mW\n",
+      "SBS threshold power for the best possible case = 17.33 mW\n"
+     ]
+    }
+   ],
+   "source": [
+    "#SBS threshold power\n",
+    "#given data :\n",
+    "gb=4*10**-11## in m/W\n",
+    "A_eff=55*10**-12## in m**2\n",
+    "L_eff=20## in km\n",
+    "lamda_p=1.55## micro-m\n",
+    "n=1.46## constant\n",
+    "Va=5960## for the silica fiber in m-s**-1\n",
+    "Vb=(2*n*Va)/lamda_p#\n",
+    "del_v=100*10**6## in Hz\n",
+    "del_Vb=20*10**6## in Hz\n",
+    "b1=1#\n",
+    "b2=2#\n",
+    "P_th=((21*b1*A_eff)/(gb*L_eff))*(1+(del_v/del_Vb))\n",
+    "P_th1=((21*b2*A_eff)/(gb*L_eff))*(1+(del_v/del_Vb))\n",
+    "print \"SBS threshold power for the worst case = %0.2f mW\"%P_th\n",
+    "print \"SBS threshold power for the best possible case = %0.2f mW\"%P_th1"
+   ]
+  }
+ ],
+ "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
+}