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+{
+"cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter 9: Optical Fibers"
+ ]
+ },
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.10: Raman_scattering_threshold_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 305\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=850; //in nm\n",
+"L1=L/1000; //converted L in micrometer for using in given formula\n",
+"A=0.4; //in dB/km\n",
+"d=5; //in micrometer\n",
+"Po=5.9*10^-2*A*L1*d^2;\n",
+"printf(' \n Po(Th) = %0.0f mW',Po*1000); //rounding off error"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.11: Raman_scattering_threshold_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 305\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=1330; //in nm\n",
+"L1=L/1000; //converted L in micrometer for using in given formula\n",
+"A=0.4; //in dB/km\n",
+"d=5; //in micrometer\n",
+"Po=5.9*10^-2*A*L1*d^2;\n",
+"printf(' \n Po(Th) = %0.0f mW',Po*1000); //unit in book is wrong"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.12: Raman_sscattering_threshold_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"\n",
+"\n",
+"\n",
+"\n",
+"//Chapter 9\n",
+"//page no 305\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=1550; //in nm\n",
+"L1=L/1000; //converted L in micrometer for using in given formula\n",
+"A=0.4; //in dB/km\n",
+"d=5; //in micrometer\n",
+"Po=5.9*10^-2*A*L1*d^2;\n",
+"printf(' \n Po(Th) = %0.0f mW',Po*1000); //unit in book is wrong"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.13: Maximum_modal_number.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 310\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"R=25; //in nm\n",
+"R1=25*10^-6; //in m\n",
+"L=1000; //in nm\n",
+"L1=10^-6; //in m\n",
+"NA=0.2; \n",
+"V=2*%pi/L1*R1*NA;\n",
+"printf(' \n Normalised frequency(V) = %0.1f ',V);\n",
+"y=2; //for parabolic\n",
+"Mmax=y/(y+2)*(V^2)/2;\n",
+"printf(' \n Maximum number of modes is equal to = %0.0f ',Mmax);//answer in book is wrong\n",
+""
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.14: Maximum_operating_bandwidth.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 313\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Tp=0.25; //in microsec\n",
+"fB=0.529/Tp/10^-6; //channel bitrate\n",
+"fBw=fB; //channel bandwidth = channel bitrate when zero ISI and RZ input data is modulated\n",
+"printf(' \n Maximum operating bandwidth = %0.3f MHz',fBw*10^-6);\n",
+"L=50; //in km\n",
+"D=Tp*10^-6/L; //Dispersion\n",
+"printf(' \n Dispersion = %0.0f ns/km',D*10^9);\n",
+"fBwL=fBw*10^-6*L; //bandwidth length product\n",
+"printf(' \n Bandwidth length product(fBw*L) = %0.1f MHz/km',fBwL);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.15: Maximum_operating_bandwidth.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 314\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Tp=2; //in microsec\n",
+"fB=0.529/Tp/10^-6; //channel bit rate\n",
+"fBw=fB; //channel bandwidth = channel bitrate when zero ISI and RZ input data is modulated\n",
+"printf(' \n Maximum operating bandwidth = %0.2f MHz',fBw*10^-6);\n",
+"L=50; //in km\n",
+"D=Tp*10^-6/L; //Dispersion\n",
+"printf(' \n Dispersion = %0.0f ns/km',D*10^9); //unit in book is wrong\n",
+"fBwL=fBw*10^-6*L; //bandwidth length product\n",
+"printf(' \n Bandwidth length product(fBw*L) = %0.0f MHz/km',fBwL);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.16: Maximum_operating_bandwidth.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 314\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Tp=5; //in microsec\n",
+"fB=0.529/Tp/10^-6; //channel bit rate\n",
+"fBw=fB; //channel bandwidth = channel bitrate when zero ISI and RZ input data is modulated\n",
+"printf(' \n Maximum operating bandwidth = %0.3f MHz',fB*10^-6);\n",
+"L=50; //in km\n",
+"D=Tp*10^-6/L; //Dispersion\n",
+"printf(' \n Dispersion = %0.1f micro sec/km',D*10^6);\n",
+"fBwL=fBw*10^-6*L; //bandwidth length product\n",
+"printf(' \n Bandwidth length product(fBw*L) = %0.1f MHz/km',fBwL);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.17: RMS_pulse_chirping.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 315\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Slw=25; //in nm\n",
+"L=850; //in nm given\n",
+"c=3*10^5; //in km/s\n",
+"ofmd=0.02; //optical fiber material dispersion\n",
+"Mdp=1/L/c*ofmd; //answer mismatch due to differnt value chosen for calculation\n",
+"printf(' \n Material Dispersion parameter Mdp = %0.0f ps/nm.km',Mdp*10^12);\n",
+"l=1; //in km\n",
+"dmd=Slw*l*Mdp; //pulse chirping\n",
+"printf(' \n pulse chirping dmd = %0.2f ns/km',dmd*10^9);\n",
+"\n",
+""
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.18: RMS_pulse_broadening.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 315\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Slw=2; //in nm\n",
+"L=850; //in nm given\n",
+"c=3*10^5; //in km/s\n",
+"ofmd=0.02; //optical fiber material dispersion\n",
+"Mdp=1/L/c*ofmd; //answer mismatch due to differnt value chosen for calculation\n",
+"printf(' \n Material Dispersion parameter Mdp = %0.0f ps/nm.km',Mdp*10^12);\n",
+"l=1; //in km\n",
+"dmd=Slw*l*Mdp;\n",
+"printf(' \n pulse chirping dmd = %0.3f ns/km',dmd*10^9);\n",
+""
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.19: Channel_capacity.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 325\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"fb1=2.5; //in Gb/s\n",
+"D1=20; //in ps/nm.km\n",
+"D2=5; //in ps/nm.km\n",
+"fb2=D1/D2*fb1; \n",
+"printf('\n fb2 = %0.0f Gb/s(OC-192)',fb2)\n",
+"//Values of D1 and D2 are conflicted in question ,however solution is correct "
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.1: Compute_angle_of_acceptance_critical_angle_and_NA.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 296\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"n2=1.35; //refractive index\n",
+"n1=1.4; //refractive index\n",
+"Wo=asind(n2/n1); //in radians\n",
+"printf('\n Critical Angle,Wo = %0.2f degree\n',Wo);\n",
+"NA=sqrt(n1^2-n2^2);\n",
+"printf('\n Numerical Aperture,NA = %0.2f \n',NA);\n",
+"Wa=asind(NA); //in radians\n",
+"printf('\n Angle of acceptance,Wa = %0.2f degree\n',Wa);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.20: Channel_capacity.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 325\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"fb1=2.5; //in Gb/s\n",
+"DV1=100; //in GHz\n",
+"DV2=50; //in GHz\n",
+"fb2=DV1/DV2*fb1;\n",
+"printf('\n fb2 = %0.0f Gb/s',fb2)"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.21: Total_chromatic_dispersio.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 332\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=400; //in km\n",
+"dAV=4; //in ps/km\n",
+"dTL=L*dAV; //total chromatic dispersion\n",
+"printf('dTL =%0.0f ps/nm.km',dTL);\n",
+"printf('\n or,dTL =%0.1f ns/nm.km',dTL/10^3);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.22: Compute_optical_attenuation.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 335\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"no=1; //refractive index\n",
+"n1=1.35; //refractive index\n",
+"Po=[(n1-no)/(n1+no)]^2; //fresnal reflection\n",
+"printf('\n Po(refl)= %0.3f',Po);\n",
+"Lrefl=-10*log10(1-Po); //attenuation loss\n",
+"printf('\n L(refl)= %0.1f dB',Lrefl);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.23: Compute_total_attenuation.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 335\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"no=1; //refractive index\n",
+"n1=1.55; //refractive index\n",
+"Po=[(n1-no)/(n1+no)]^2; //fresnal reflection\n",
+"printf('\n Fresnel reflective coefficient,Po(refl)= %0.5f\n',Po);\n",
+"Lrefl=-10*log10(1-Po); //attenuation loss\n",
+"printf('\n Attenuation based on Fresnel reflective coefficient,L(refl)= %0.1f dB\n',Lrefl);\n",
+"Ltot=5*Lrefl;\n",
+"printf('\n Total link attenuation on Fresnel reflections,Ltotal = %0.1f dB',Ltot);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.24: Compute_the_insertion_loss.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 336\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"n1=1;\n",
+"n2=1.5;\n",
+"a=25; //in micrometer\n",
+"y=3; //in micrometer\n",
+"Csim=16*(n1/n2)^2/%pi/[1+(n1/n2)]^4*[2*acos(y/2/a)-(y/a)*[1-(y/2/a)^2]^0.5]; \n",
+"//lateral coupling coefficient\n",
+"a=2*acos(y/2/a)-(y/a)*sqrt(1-(y/2/a)^2);\n",
+"b=16*(n1/n2)^2/%pi/[1+(n1/n2)]^4;\n",
+"printf('\n Lateral coupling coefficient,Csim= %0.2f\n',Csim);\n",
+"Lsim=-10*log10(1-Csim);\n",
+"printf('\n Insertion Loss,Lsim= %0.1f dB\n',Lsim);\n",
+"//Answer wrong in book"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.25: Compute_insertion_loss.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 337\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Alpha=2;\n",
+"a=25; //in micrometer\n",
+"y=2; //in micrometer\n",
+"Cgim=2/%pi*(y/a)*(Alpha+2)/(Alpha+1); //lateral coupling coefficient\n",
+"printf('\n Csim= %0.3f\n',Cgim);\n",
+"Lgim=-10*log10(1-Cgim); //insertion loss\n",
+"printf('\n Insertion Loss,Lgim= %0.1f dB\n',Lgim);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.26: Compute_insertion_loss.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 339\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"n1=1.5; //refractive index\n",
+"n2=1.5; //refractive index\n",
+"W=2.5; //in degree\n",
+"NA1=0.3;\n",
+"NA2=0.4;\n",
+"Csim1=16*(n1/n2)^2/[1+(n1/n2)^4]*[1-n2*W/(180*NA1)]; //angular coupling coefficient\n",
+"//Answer wrong in book\n",
+"printf('\n Csim= %0.3f\n',Csim1);\n",
+"Lsim1=-10*log10(Csim1);\n",
+"printf('\n Insertion Loss,Lsim= %0.3f dB\n',Lsim1);\n",
+"Csim2=16*(n1/n2)^2/[1+(n1/n2)^4]*[1-n2*W/(180*NA2)]; //angular coupling coefficient\n",
+"//Answer wrong in book\n",
+"printf('\n Csim= %0.3f\n',Csim2);\n",
+"Lsim2=-10*log10(Csim2);\n",
+"printf('\n Insertion Loss,Lsim= %0.2f dB\n',Lsim2);\n",
+""
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.27: Compute_total_insertion_loss.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 340\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"a=4; //in micrometer\n",
+"V=2.4;\n",
+"aw=1; //in degree\n",
+"NA1=0.2;\n",
+"n1=1.45; //refractive index\n",
+"y=1; //in micrometer\n",
+"omega=a*[0.65+1.62*V^-1.5+2.88*V^-6]/sqrt(2);\n",
+"printf('\n Normalised spot view (w)= %0.2f micrometer',omega);\n",
+"Lsml=2.17*(y/omega)^2;\n",
+"printf('\n Insertion loss due to lateral,Lsm= %0.2f dB',Lsml); //answer is wrong in book \n",
+"Lsmg=2.17*(aw*%pi/180*omega*n1*V/a/NA1)^2;\n",
+"printf('\n Insertion loss due to angular,Lsm= %0.2f dB',Lsmg);\n",
+"\n",
+"printf('\n Total Insertion loss,Lsmtotal= %0.2f dB',Lsml+Lsmg);\n",
+""
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.28: Compute_insertion_loss_at_the_joint.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 340\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"a1=4.5; //in micrometer\n",
+"a2=4; //in micrometer\n",
+"V=2.1;\n",
+"aw=1; //in degree\n",
+"NA=0.2;\n",
+"n1=1.45;\n",
+"y=1; //in micrometer\n",
+"w1=a1*[0.65+1.62*V^-0.5+2.88*V^-6]/sqrt(2); //insertion loss\n",
+"printf('\n Wo1= %0.1f ',w1);\n",
+"w2=a2*[0.65+1.62*V^-0.5+2.88*V^-6]/sqrt(2); //insertion loss\n",
+"printf('\n Wo2= %0.1f ',w2);\n",
+"Lintr=-10*log10(4*[(w1/w2+w2/w1)^-2]); //toatl insertion loss at joint\n",
+"printf('\n Lintr= %0.2f dB',Lintr); //Answer wrong in book"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.2: Fiber_Attenuation.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 300\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Po=8; //in mW\n",
+"Pi=50; //in mW\n",
+"l=15; //in km\n",
+"TA=-10*log10(Po/Pi);\n",
+"printf('\n Total fibre Attenuation,L = %0.2fdB/%0.0fkm \n',TA,l);\n",
+"Alpha=TA/l; \n",
+"printf('\n Alpha is = %0.2f dB/km\n',Alpha);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.3: Maximum_length_of_optical_fibre.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 300\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Po=10; //in mW\n",
+"Pi=150; //in mW\n",
+"Alpha=0.8; //in dB/km\n",
+"TA=-10*log10(Po/Pi);\n",
+"printf('\n Total fibre Attenuation,L = %0.2f dB \n',TA);\n",
+"l=TA/Alpha;\n",
+"printf('\n maximum length is,l = %0.2f km\n',l);\n",
+"//Round off Variations appear"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.4: Rayleigh_attenuation_of_an_optical_fibre.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Chapter 9\n",
+"//page no 302\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"B=92*10^-12; //in m^2/N\n",
+"Tf=1550; //in K\n",
+"n=1.46; //refractive index\n",
+"p=0.29;\n",
+"K=1.38*10^-23; //in J/K\n",
+"l=1; //in km\n",
+"L1=630; //in nm\n",
+"L2=1330; //in nm\n",
+"L3=1550; //in nm\n",
+"disp('Rayleight scattering coefficient');\n",
+"Y1=8*%pi^3*n^8*p^2*B*K*Tf/3/(L1*10^-9)^4;\n",
+"Y2=8*%pi^3*n^8*p^2*B*K*Tf/3/(L2*10^-9)^4;\n",
+"Y3=8*%pi^3*n^8*p^2*B*K*Tf/3/(L3*10^-9)^4; \n",
+"mprintf(' for L1= 630nm, is %e',Y1);\n",
+"mprintf('\n for L2= 1330nm, is %e',Y2);\n",
+"mprintf('\n for L3= 1550nm, is %e',Y3);\n",
+"//Misprinted answer\n",
+"\n",
+"disp('Rayleight scattering attenuation factor');\n",
+"Fr1=%e^-(Y1*l*10^3);\n",
+"Fr2=%e^-(Y2*l*10^3);\n",
+"Fr3=%e^-(Y3*l*10^3);\n",
+"printf(' \n for Y1= 0.00179 is %0.2f',Fr1);\n",
+"printf(' \n for Y2= 0.00009 is %0.2f',Fr2);\n",
+"printf(' \n for Y3= 0.0000182 is %0.2f\n',Fr3);\n",
+"//\n",
+"\n",
+"disp('Rayleight scattering attenuation ');\n",
+"Ar1=10*log10(Fr1^-1);\n",
+"Ar2=10*log10(Fr2^-1);\n",
+"Ar3=10*log10(Fr3^-1);\n",
+"printf(' \n for Ar1= 0.17 is %0.2f dB/km',Ar1);\n",
+"printf(' \n for Ar2= 0.91 is %0.2f dB/km',Ar2);\n",
+"printf(' \n for Ar3= 0.98 is %0.3f dB/km',Ar3);\n",
+"//For L3 answers in book are misprinted\n",
+"//Rounding off errors in answer"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.5: SBS_threshold_optical_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"\n",
+"\n",
+"\n",
+"\n",
+"//Chapter 9\n",
+"//page no 304\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=850; //in nm\n",
+"L1=0.850; //converted L in micrometer for using in given formula\n",
+"A=0.5; //in dB/km\n",
+"d=5; //in micrometer\n",
+"Bw=1; //in Gz\n",
+"Po=4.4*10^-3*A*Bw*L1^2*d^2;\n",
+"printf(' \n Po(Th) = %0.3f W',Po);\n",
+"printf(' \n Therefore,Po(Th) = %0.0f mW',Po*1000);\n",
+"\n",
+""
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.6: SBS_threshold_optical_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"\n",
+"\n",
+"\n",
+"\n",
+"//Chapter 9\n",
+"//page no 304\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=1330; //in nm\n",
+"L1=1.330; //converted L in micrometer for using in given formula\n",
+"A=0.5; //in dB/km\n",
+"d=5; //in micrometer\n",
+"Bw=1; //in Gz\n",
+"Po=4.4*10^-3*A*Bw*L1^2*d^2;\n",
+"printf(' \n Po(Th) = %0.3f W',Po);\n",
+"printf(' \n Therefore,Po(Th) = %0.0f mW',Po*1000);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.7: SBS_threshold_optical_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"\n",
+"\n",
+"\n",
+"\n",
+"//Chapter 9\n",
+"//page no 304\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=1550; //in nm\n",
+"L1=1.550; //converted L in micrometer for using in given formula\n",
+"A=0.5; //in dB/km\n",
+"d=5; //in micrometer\n",
+"Bw=1; //in Gz\n",
+"Po=4.4*10^-3*A*Bw*L1^2*d^2;\n",
+"printf(' \n Po(Th) = %0.3f W',Po);\n",
+"printf(' \n Therefore,Po(Th) = %0.0f mW',Po*1000);"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.8: SBS_threshold_optical_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"\n",
+"\n",
+"\n",
+"\n",
+"//Chapter 9\n",
+"//page no 304\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=850; //in nm\n",
+"L1=0.850; //converted L in micrometer for using in given formula\n",
+"A=0.5; //in dB/km\n",
+"d=8; //in micrometer\n",
+"Bw=1; //in Gz\n",
+"Po=4.4*10^-3*A*Bw*L1^2*d^2;\n",
+"printf(' \n Po(Th) = %0.3f W',Po);\n",
+"printf(' \n Therefore,Po(Th) = %0.0f mW',Po*1000);//answer is slightly different due to rounding off"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 9.9: SBS_threshold_optical_power.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"\n",
+"\n",
+"\n",
+"\n",
+"//Chapter 9\n",
+"//page no 304\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"L=850; //in nm\n",
+"L1=0.850; //converted L in micrometer for using in given formula\n",
+"A=0.5; //in dB/km\n",
+"d=10; //in micrometer\n",
+"Bw=1; //in Gz\n",
+"Po=4.4*10^-3*A*Bw*L1^2*d^2;\n",
+"printf(' \n Po(Th) = %0.3f W',Po);\n",
+"printf(' \n Therefore,Po(Th) = %0.0f mW',Po*1000);"
+ ]
+ }
+],
+"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
+}
generated by cgit (git 2.34.1) at 2024-12-23 07:55:07 +0000