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{
"metadata": {
"name": "",
"signature": "sha256:ade43627b2f5d9f9e9fc6f1fe77b719e4d5ca9dd8c4d3cb361adefbae3d62e1a"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 6: Optical Sources LEDs"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 1: PgNo-277"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"\n",
"# Initialisation of variables\n",
"r=125*math.pow(10,-6) # cladding radius in meter\n",
"R=8*math.pow(10,-2) # curve of radius in meter\n",
"s=((R+2*r)/(R+r))-1\n",
"s_p=s*100 # percentage of strain\n",
"\n",
"# Results\n",
"print ('%s %.2f %s' %(\" The percentage of strain = \",s_p,\"%\"))\n",
"print (\"\\n If this condition is maintained the fiber will maintain without any break \")\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The percentage of strain = 0.16 %\n",
"\n",
" If this condition is maintained the fiber will maintain without any break \n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 2: PgNo-279"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"\n",
"# initialisation of variables\n",
"w=40*math.pow(10,-3) # cable weighing in kg/m\n",
"R=20*math.pow(10,-2) # radius of curvature in meter\n",
"n=0.19 # co-efficient of friction\n",
"x=(3.14/4) # angle in rad\n",
"\n",
"# calculations\n",
"si=42.36 # pulling tension at the entrance in kg\n",
"X=(si/(w*R))\n",
"Y=math.asinh(si/(w*R))\n",
"Z=w*R*math.sinh(n*x+Y) # puttling tension at the exit of an optical cable\n",
"\n",
"# Results\n",
"print ('%s %.3f %s' %(\" The puttling tension at the exit of an optical cable = \",Z,\"kg\"))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
" The puttling tension at the exit of an optical cable = 49.173 kg\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
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