initial commit / add all books

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diff --git a/3834/CH11/EX11.1.1/Ex11_1_1.jpg b/3834/CH11/EX11.1.1/Ex11_1_1.jpg
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diff --git a/3834/CH11/EX11.1.1/Ex11_1_1.sce b/3834/CH11/EX11.1.1/Ex11_1_1.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.1.1

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+

+R=0.85;//Responsivity of photodiode in A/W

+P=1E-3;//Input power saturation in W

+

+Ip=R*P;//The photocurrent in A

+mprintf("The photocurrent =%.2f mA",Ip*1E+3);

diff --git a/3834/CH11/EX11.1.2/Ex11_1_2.jpg b/3834/CH11/EX11.1.2/Ex11_1_2.jpg
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diff --git a/3834/CH11/EX11.1.2/Ex11_1_2.sce b/3834/CH11/EX11.1.2/Ex11_1_2.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 10.3.3

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+ETA=0.7;//The quantum efficiency

+lambda=1664;//Operating wavelength in nm

+R=(ETA/1248)*lambda;//Responsivity of an InGaAs photodiode  A/W

+

+mprintf("Responsivity of an InGaAs photodiode =%.3f A/W",R);

diff --git a/3834/CH11/EX11.1.3/Ex11_1_3.jpg b/3834/CH11/EX11.1.3/Ex11_1_3.jpg
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diff --git a/3834/CH11/EX11.1.3/Ex11_1_3.sce b/3834/CH11/EX11.1.3/Ex11_1_3.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.1.3

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+

+ETA=0.7;//The quantum efficiency

+alphaabs=1E+5;//absorption coefficient

+w=(log(1-ETA))/(-alphaabs);//The width of the depletion region of an InGaAs photodiode  um

+

+mprintf("The width of the depletion region of an InGaAs photodiode =%.1f um",w*1E+6);//Multiplication by 1e6 to convert unit from m to um

diff --git a/3834/CH11/EX11.1.4/Ex11_1_4.jpg b/3834/CH11/EX11.1.4/Ex11_1_4.jpg
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diff --git a/3834/CH11/EX11.1.4/Ex11_1_4.sce b/3834/CH11/EX11.1.4/Ex11_1_4.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.1.4

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+tautr=100//transit time in ps

+tauRC=100//time constant induced by a capacitor in ps

+BWPD1=1/(2*%pi*(tautr+tauRC))

+

+mprintf("\nBandwidth of InGaAs photodiode = %.3f Gbit/s",BWPD1*1E3);//multiplication by 1e3 to convert unit from 10^12 bits/s to Gbits/s

diff --git a/3834/CH11/EX11.3.1/Ex11_3_1.jpg b/3834/CH11/EX11.3.1/Ex11_3_1.jpg
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+++ b/3834/CH11/EX11.3.1/Ex11_3_1.jpg
diff --git a/3834/CH11/EX11.3.1/Ex11_3_1.sce b/3834/CH11/EX11.3.1/Ex11_3_1.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.3.1

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+

+Pin=0.1E-6;//Average input power in W

+lambda=1550;//Operating wavelength in nm

+R=1;//Responsivity of an MF-432 PIN photodiode

+Ip=R*Pin;//photocurrent in A

+e=1.6E-19;//Electrons value in Coulomb

+BWpd=2.5E+9;//Bandwidth of an MF-432 PIN photodiode in Hz

+Is=sqrt(2*e*Ip*BWpd);

+Isn=Is/sqrt(BWpd);//shot noise current in A/sqrt(Hz)

+

+Kb=1.38E-23;//Boltzman constant in J/K

+T=300;//Room temperature in K

+P=Kb*T;

+Rl=50E+3;

+x=(4*P)/Rl;

+It=sqrt(x*BWpd);

+Itn=It/sqrt(BWpd);//thermal noise current in A/sqrt(Hz)

+

+id=3E-9;//average dark noise current in A

+Id=sqrt(2*e*id*BWpd);

+Idn=Id/sqrt(BWpd);//dark noise current in A/sqrt(Hz)

+

+Inoise=sqrt(Is^2+It^2+Id^2);//RMS value of noise current for an MF-432 PIN photodiode in A

+mprintf("RMS value of noise current for an MF-432 PIN photodiode = %.1f nA", Inoise*1E+9);//Multiplication by 1e9 to convert unit from A to nA

+

+InoiseN=sqrt(Isn^2+Itn^2+Idn^2);//Bandwidth value of noise current for an MF-432 PIN photodiode in A/sqrt(Hz)

+mprintf("\nBandwidth value of noise current for an MF-432 PIN photodiode = %.2f x10^-4 nA/sqrt(Hz)", InoiseN*1E+13)

+//Multiplication by 1e12 to convert unit from A to pA

diff --git a/3834/CH11/EX11.3.2/Ex11_3_2.jpg b/3834/CH11/EX11.3.2/Ex11_3_2.jpg
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diff --git a/3834/CH11/EX11.3.2/Ex11_3_2.sce b/3834/CH11/EX11.3.2/Ex11_3_2.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.3.2

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+

+Pin=0.1E-6;//Average input power in W

+lambda=1550;//Operating wavelength in nm

+T=300;//Room temperature in K

+R=1;//Responsivity of an MF-432 PIN photodiode in A/W

+X=R^2*Pin^2;

+Inoise=30.2E-9;//RMS value of noise current for an MF-432 PIN photodiode

+

+SNR=X/(Inoise^2);//SNR of an MF-432 PIN photodiode

+mprintf("SNR of an MF-432 PIN photodiode = %.2f",SNR);//the answer vary due to rounding

diff --git a/3834/CH11/EX11.3.3/Ex11_3_3.jpg b/3834/CH11/EX11.3.3/Ex11_3_3.jpg
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diff --git a/3834/CH11/EX11.3.3/Ex11_3_3.sce b/3834/CH11/EX11.3.3/Ex11_3_3.sce
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+++ b/3834/CH11/EX11.3.3/Ex11_3_3.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.3.3

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+

+M=20;//Multiplication factor of a photodiode

+Pin=0.1E-6;//Average input power in W

+T=300;//Room temperature in K

+BWpd=2.5E+9;//Bandwidth of a photodiode in Hz

+Rl=50E+3;

+R=0.9;//Responsivity of a photodiode

+e=1.6E-19;//Electrons value in Coulomb

+

+//case 1

+FsSi=2.49;//excess noise factor of Si avalanche photodiode

+SNRs=(R*Pin)/(2*e*FsSi*BWpd);//SNR of Si avalanche photodiode

+mprintf("SNR of Si avalanche photodiode = %.2f",SNRs);//the answer vary due to rounding

+

+//case 2

+FsInGaAs=12.78;//excess noise factor of InGaAs avalanche photodiode

+SNRt=(R*Pin)/(2*e*FsInGaAs*BWpd);//SNR of InGaAs avalanche photodiode

+mprintf("\nSNR of InGaAs avalanche photodiode = %.2f",SNRt);//the answer vary due to rounding

diff --git a/3834/CH11/EX11.3.4/Ex11_3_4.jpg b/3834/CH11/EX11.3.4/Ex11_3_4.jpg
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index 000000000..972aaac05
--- /dev/null
+++ b/3834/CH11/EX11.3.4/Ex11_3_4.jpg
diff --git a/3834/CH11/EX11.3.4/Ex11_3_4.sce b/3834/CH11/EX11.3.4/Ex11_3_4.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.3.4

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear;

+//given

+

+NEPnorm1=3.3E-12;//Bandwidth normalised NEP in W/sqrt(Hz) from 0-10MHz

+BW1=10E+6;//Bandwidth for case 1 in Hz

+

+x=NEPnorm1*sqrt(BW1);

+

+NEPnorm2=30E-12;//Bandwidth normalised NEP in W/sqrt(Hz)from 10-125 MHz

+BW2=115E+6;//Bandwidth for case 2 in Hz

+

+y=NEPnorm2*sqrt(BW2);

+

+NEP=sqrt(x^2+y^2);

+mprintf("Noise-Equivalent power(NEP) = %.1f nW",NEP*1E+9);

+

+Rmax=1.1;//Maximum value of responsivity of a photodiode in A/W at 1550nm

+Rlambda=0.9;//Responsivity of a photodiode for given wavelength 1300nm in A/W

+BW=125E+6;//Bandwidth  in Hz

+NEPlambda1=NEPnorm2*(Rmax/Rlambda)*sqrt(BW);

+mprintf("\nNoise-Equivalent power(NEP) for given wavelength lambda=1550nm = %.1f nW",NEPlambda1*1E9);

+

+

diff --git a/3834/CH11/EX11.3.5/Ex11_3_5.jpg b/3834/CH11/EX11.3.5/Ex11_3_5.jpg
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index 000000000..7c58d9504
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diff --git a/3834/CH11/EX11.3.5/Ex11_3_5.sce b/3834/CH11/EX11.3.5/Ex11_3_5.sce
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+//Fiber-optics communication technology, by Djafer K. Mynbaev and Lowell L. Scheiner 

+//Example 11.3.5

+//windows 7

+//Scilab version-6.0.0

+clc;

+clear ;

+//given

+

+BER=1E-9;//bit error rate

+Kb=1.38E-23;//Boltzman constant in J/K

+T=300;//Room temperature in K

+P=Kb*T;//constant

+Rl=50E+3;//load resistance in ohm

+x=(4*P)/Rl;//constant  

+BWpd=2.5e9//Bandwidth of MF-432 in Hz

+R=1//responsivity in A/W from data sheet

+It=sqrt(x*BWpd);

+Q=6;

+e=1.6E-19;//Electrons value in Coulomb

+

+Pmin=(It+e*Q*BWpd)*(Q/R);//The minimal optical power-photodiode sensitivity Pmin in W

+mprintf("The minimal optical power-photodiode sensitivity Pmin= %.2f dBm",10*log10(Pmin/1e-3));//the answer vary due to rounding//division by 1e-3 to convert unit from dB to dBm