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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 5: Optical Amplifiers"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 5.1: Input_power.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Chapter 5\n",
+"//page no 128\n",
+"//given\n",
+"clc;\n",
+"Vrms=0.3;     //in V\n",
+"CF=0.75;        //in V/mW\n",
+"Pi=Vrms/CF;         \n",
+"printf('\n input power %0.1f mW\n',Pi);"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 5.2: Compute_pseudo_random_binary_sequence.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Chapter 5\n",
+"//page no 131\n",
+"//given\n",
+"clc;\n",
+"Di=155;         //in Mb/s\n",
+"sl=10^-3*Di*10^6;           //in  bitstream\n",
+"//PRBS=2^x-1=sl;\n",
+"x=log(sl+1)/log(2);//equation is made to pick value of x\n",
+"printf('\n PRBS =2^%0.0f -1 \n',x);"
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}