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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter11 - Wavelength-division multiplexing"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 11.1 : Page 277"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"interaction length = 0.785 \n"
]
}
],
"source": [
"from __future__ import division\n",
"from math import sqrt, pi, asin\n",
"#interaction length \n",
"po=1##assume\n",
"p1=po/2##\n",
"p2=p1##\n",
"kl=asin(sqrt(p1))##in degree\n",
"print \"interaction length = %0.3f \"%kl\n",
"#answer is in the form of pi in the textbook"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 11.2 : Page 279"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"output port positioned at 0.7492 mm with respect to the input port will gather signals at h1=1310nm\n",
"output port positioned at 0.6117 mm with respect to the input port will gather signals at h1=1550nm\n"
]
}
],
"source": [
"#position \n",
"a=8.2##in micro meter\n",
"n1=1.45##\n",
"n2=1.446##\n",
"h1=1.31##in micro meter\n",
"h2=1.55##/in micro meter\n",
"v1=((2*pi*a*sqrt(n1**2-n2**2))/h1)##\n",
"v2=((2*pi*a*sqrt(n1**2-n2**2))/h2)##\n",
"db=2.439##\n",
"Del=5.5096*10**-3##\n",
"k1=1.0483##mm**-1##\n",
"k2=1.2839#/m**-1\n",
"l1=((pi)/(4*k1))##in mm\n",
"l2=((pi)/(4*k2))##in mm\n",
"print \"output port positioned at %0.4f\"%(l1),\" mm with respect to the input port will gather signals at h1=1310nm\"\n",
"print \"output port positioned at %0.4f\"%(l2),\" mm with respect to the input port will gather signals at h1=1550nm\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 11.4 : Page 286"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"required order of the arrayed waveguide, = 121.0\n"
]
}
],
"source": [
"# ARRAYED GUIDE\n",
"#given data\n",
"c=3*10**8#\n",
"lamda_c=1.55*10**-6## in m\n",
"vc=c/lamda_c#\n",
"n=16## number of channel\n",
"f=100*10**9## in Hz\n",
"delV_FSR=n*f#\n",
"m=round(vc/delV_FSR)#\n",
"print \"required order of the arrayed waveguide, = \",m"
]
}
],
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"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
}
|
