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{
"metadata": {
"name": "",
"signature": "sha256:9517150eeae7e7bf9389a01495b7c5d59b808d0c5432252a5c80e780ef687d70"
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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"6: Fiber Optics"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example number 6.1, Page number 160"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#importing modules\n",
"import math\n",
"from __future__ import division\n",
"\n",
"#Variable declaration\n",
"n1 = 1.5; #refractive index of core\n",
"n2 = 1.0; #refractive index of cladding\n",
"\n",
"#Calculation\n",
"thetac = math.asin(n2/n1); #critical angle(radian)\n",
"thetac = thetac*180/math.pi; #critical angle(degrees)\n",
"thetac = math.ceil(thetac*10**2)/10**2; #rounding off to 2 decimals\n",
"\n",
"#Result\n",
"print \"critical angle is\",thetac,\"degrees\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"critical angle is 41.82 degrees\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example number 6.2, Page number 160"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#importing modules\n",
"import math\n",
"from __future__ import division\n",
"\n",
"#Variable declaration\n",
"n1 = 1.5; #refractive index of core\n",
"n2 = 1.47; #refractive index of cladding\n",
"\n",
"#Calculation\n",
"thetac = math.asin(n2/n1); #critical angle(radian)\n",
"thetac = thetac*180/math.pi; #critical angle(degrees)\n",
"thetac = math.ceil(thetac*10**2)/10**2; #rounding off to 2 decimals\n",
"NA = math.sqrt(n1**2-n2**2); #numerical aperture of fiber\n",
"NA = math.ceil(NA*10)/10; #rounding off to 1 decimal\n",
"thetaa = math.asin(NA); #acceptance angle(radian)\n",
"thetaa = thetaa*180/math.pi; #acceptance angle(degrees)\n",
"thetaa = math.ceil(thetaa*10**2)/10**2; #rounding off to 2 decimals\n",
"\n",
"#Result\n",
"print \"critical angle is\",thetac,\"degrees\"\n",
"print \"numerical aperture of fiber is\",NA\n",
"print \"acceptance angle is\",thetaa,\"degrees\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"critical angle is 78.53 degrees\n",
"numerical aperture of fiber is 0.3\n",
"acceptance angle is 17.46 degrees\n"
]
}
],
"prompt_number": 8
}
],
"metadata": {}
}
]
}
|
