initial commit / add all books

22 files changed, 402 insertions, 0 deletions

diff --git a/1655/CH7/EX7.10.1/Example_7_10_1.sce b/1655/CH7/EX7.10.1/Example_7_10_1.sce
new file mode 100755
index 000000000..14033bb6c
--- /dev/null
+++ b/1655/CH7/EX7.10.1/Example_7_10_1.sce
@@ -0,0 +1,18 @@
+// Example 7.10.1  page 7.53

+

+clc;

+clear;

+

+lamda=0.85d-6;

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+eta=75/100; //quantum efficiency

+P0=0.6d-6;  //incident optical power

+Im=15d2;   //avalanche gain

+

+R= eta*q*lamda/(h*c);   //computing responsivity

+Ip=10^8*P0*R;       //computing photocurrent

+Ip=floor(Ip);

+M=Im/Ip;        //computing multiplication factor

+printf("\nMultiplication factor is %d.",M);

diff --git a/1655/CH7/EX7.10.2/Example_7_10_2.sce b/1655/CH7/EX7.10.2/Example_7_10_2.sce
new file mode 100755
index 000000000..5545b5623
--- /dev/null
+++ b/1655/CH7/EX7.10.2/Example_7_10_2.sce
@@ -0,0 +1,19 @@
+// Example 7.10.3  page 7.54

+

+clc;

+clear;

+

+lamda=900d-9;

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+eta=65/100; //quantum efficiency

+P0=0.5d-6;  //incident optical power

+Im=10d2;   //avalanche gain

+

+R= eta*q*lamda/(h*c);   //computing responsivity

+Ip=10^8*P0*R;       //computing photocurrent

+M=Im/Ip;        //computing multiplication factor

+printf("\nMultiplication factor is %d.",M);

+

+//answer in the book is 41.7 deviation 0.3.

diff --git a/1655/CH7/EX7.10.3/Example_7_10_3.sce b/1655/CH7/EX7.10.3/Example_7_10_3.sce
new file mode 100755
index 000000000..1eb02e56f
--- /dev/null
+++ b/1655/CH7/EX7.10.3/Example_7_10_3.sce
@@ -0,0 +1,19 @@
+// Example 7.10.3  page 7.54

+

+clc;

+clear;

+

+lamda=900d-9;

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+eta=65/100; //quantum efficiency

+P0=0.5d-6;  //incident optical power

+Im=10d2;   //avalanche gain

+

+R= eta*q*lamda/(h*c);   //computong responsivity

+Ip=10^8*P0*R;       //computing photocurrent

+Ip=floor(Ip);

+M=Im/Ip;        //computing multiplication factor

+printf("\nMultiplication factor is %d.",M);

+

diff --git a/1655/CH7/EX7.10.4/Example_7_10_4.sce b/1655/CH7/EX7.10.4/Example_7_10_4.sce
new file mode 100755
index 000000000..36f873609
--- /dev/null
+++ b/1655/CH7/EX7.10.4/Example_7_10_4.sce
@@ -0,0 +1,24 @@
+// Example 7.10.4  page 7.54

+

+clc;

+clear;

+

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.602d-19;  //charge of electron

+eta=70/100; //quantum efficiency

+P0=0.5d-6;  //incident optical power

+Ip=4d-6;   //avalanche gain

+E=1.5d-19;

+

+lamda=h*c/(E);   //computing wavelength

+R= eta*q*lamda/(h*c);   //computing responsivity

+P0=Ip/R;    //computing optical power

+

+lamda=lamda*10^6;

+P0=P0*10^6;

+printf("\nWavelength is %.3f micrometer.\nResponsivity is %.4f A/W.\nOptical power is %.2f microWatt.",lamda,R,P0);

+

+//answer of optical power in the book is 5.53 microWatt, deviation of 0.17 microWatt.

+

+

diff --git a/1655/CH7/EX7.10.5/Example_7_10_5.sce b/1655/CH7/EX7.10.5/Example_7_10_5.sce
new file mode 100755
index 000000000..c158acc50
--- /dev/null
+++ b/1655/CH7/EX7.10.5/Example_7_10_5.sce
@@ -0,0 +1,20 @@
+// Example 7.10.5  page 7.55

+

+clc;

+clear;

+

+lamda=900d-9;

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+eta=65/100; //quantum efficiency

+P0=0.5d-6;  //incident optical power

+Im=10d2;   //avalanche gain

+

+R= eta*q*lamda/(h*c);   //computing responsivity

+Ip=10^8*P0*R;       //computing photocurrent

+Ip=floor(Ip);

+M=Im/Ip;        //computing multiplication factor

+printf("\nMultiplication factor is %d.",M);

+

+//answer in the book is 42.55 deviation 0.45

diff --git a/1655/CH7/EX7.10.6/Example_7_10_6.sce b/1655/CH7/EX7.10.6/Example_7_10_6.sce
new file mode 100755
index 000000000..5885a4053
--- /dev/null
+++ b/1655/CH7/EX7.10.6/Example_7_10_6.sce
@@ -0,0 +1,22 @@
+// Example 7.10.6  page 7.55

+

+clc;

+clear;

+

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.602d-19;  //charge of electron

+P0=0.5d-6;  //incident optical power(assumption)

+lamda=1.5d-6;   //wavelength

+M=20;       //Multiplication factor

+R=0.6;      //Responsivity

+

+eta=(R*h*c)/(q*lamda);  //computing quantum efficiency

+Ip=P0*R;        //computing photocurrent

+I=M*Ip*10^6;    //computing output current

+

+printf("\nQuantum efficiency is %.3f micrometer.\nOutput current %d microAmpere.",eta,I);

+

+//answer of quantum efficiency in the book is given as 0.495, deviation of 0.001.

+

+

diff --git a/1655/CH7/EX7.2.1/Example_7_2_1.sce b/1655/CH7/EX7.2.1/Example_7_2_1.sce
new file mode 100755
index 000000000..7c4843e7b
--- /dev/null
+++ b/1655/CH7/EX7.2.1/Example_7_2_1.sce
@@ -0,0 +1,12 @@
+// Example 7.2.1  page 7.11

+

+clc;

+clear;

+

+n1=3.4;    //refractive index of optical source

+n=1.46;     //refractive index of silica fiber

+

+r=((n1-n)/(n1+n))^2;    //computing Frensel reflection

+L=-10*log10(1-r);      //computing loss

+

+printf("\nFrensel reflection is %.3f.\nPower loss is %.2f dB.",r,L);

diff --git a/1655/CH7/EX7.2.2/Example_7_2_2.sce b/1655/CH7/EX7.2.2/Example_7_2_2.sce
new file mode 100755
index 000000000..eedcb39a8
--- /dev/null
+++ b/1655/CH7/EX7.2.2/Example_7_2_2.sce
@@ -0,0 +1,14 @@
+// Example 7.2.2  page 7.11

+

+clc;

+clear;

+

+r=35d-6;        //radius

+R=150;      //Lambertian emission pattern

+NA=0.2;     //Numerical aperture

+Pled= %pi^2*r^2*R*NA^2;

+Pled=Pled*10^7;

+printf("\nOptical power for larger core of 35 micrometer is %.3f mW.",Pled);

+r1=25d-6;

+Pled1=(r1/r)^2*Pled;

+printf("\nOptical power for smaller core of 25 micrometer is %.2f mW.",Pled1);

diff --git a/1655/CH7/EX7.2.3/Example_7_2_3.sce b/1655/CH7/EX7.2.3/Example_7_2_3.sce
new file mode 100755
index 000000000..bf72d70b1
--- /dev/null
+++ b/1655/CH7/EX7.2.3/Example_7_2_3.sce
@@ -0,0 +1,16 @@
+// Example 7.2.3  page 7.12

+

+clc;

+clear;

+

+r=25d-6;        //radius

+R=39;      //Lambertian emission pattern

+NA=0.25;    //numerical aperture

+a=35d-6;    //area

+Pc1= %pi^2*a^2*R*NA^2;  //computing coupled power when r<a

+Pc1=Pc1*10^7;

+Pc= %pi^2*r^2*R*NA^2;   //computing coupled power when r>a

+Pc=Pc*10^7;

+

+printf("\nOptical power when r>a is %.2f mW.\nOptical power when r<a is %.3f mW.",Pc,Pc1);

+

diff --git a/1655/CH7/EX7.2.4/Example_7_2_4.sce b/1655/CH7/EX7.2.4/Example_7_2_4.sce
new file mode 100755
index 000000000..5cd795a0c
--- /dev/null
+++ b/1655/CH7/EX7.2.4/Example_7_2_4.sce
@@ -0,0 +1,21 @@
+// Example 7.2.4  page 7.12

+

+clc;

+clear;

+

+n1=3.6;  //refractive index

+n=1;    //refractive index of air

+F=0.68; //transmission factor

+Pin=30/100; //percent power supplied

+

+eta =(n1*(n1+1)^2)^-1;     //computing eta

+P=Pin*eta;      //computing optical power emitted

+eta=eta*100;

+P=P*1000;

+Pt=P*Pin;       //computing internal power

+

+printf("\neta external is %.1f percent.\nOptical power emitted is %.1f mW.\nInternal power is %.2f mW.",eta,P,Pt);

+printf("\nNote - Printing error in the book they have printed 1.5 instead of 1.3 as the answer of eta.");

+

+//Printing error in the book they have printed 1.5 instead of 1.3 as the answer of eta

+

diff --git a/1655/CH7/EX7.5.1/Example_7_5_1.sce b/1655/CH7/EX7.5.1/Example_7_5_1.sce
new file mode 100755
index 000000000..603ccf275
--- /dev/null
+++ b/1655/CH7/EX7.5.1/Example_7_5_1.sce
@@ -0,0 +1,15 @@
+// Example 7.5.1  page 7.24

+

+clc;

+clear;

+

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+e=1.6d-19;  //charge of electron

+q=1.43;     //Bandgap energy

+

+lamda=h*c/(q*e)*10^9;    //computing wavelength

+printf("\nWavelength is %d nm",lamda);

+printf("\nThis proves that photodiode will not operate for photon of wavelength greater than %d nm.",lamda);

+

+//answer in the book 868nm; deviation of 1nm

diff --git a/1655/CH7/EX7.5.2/Example_7_5_2.sce b/1655/CH7/EX7.5.2/Example_7_5_2.sce
new file mode 100755
index 000000000..e3866eb5b
--- /dev/null
+++ b/1655/CH7/EX7.5.2/Example_7_5_2.sce
@@ -0,0 +1,10 @@
+// Example 7.5.2  page 7.24

+

+clc;

+clear;

+

+R=0.6;      //responsivity

+Pin=15;     //optical power in microwatt

+

+Ip=R*Pin;       //computing photocurrent

+printf("\nPhotocurrent generated is %d microAmpere.",Ip);

diff --git a/1655/CH7/EX7.5.3/Example_7_5_3.sce b/1655/CH7/EX7.5.3/Example_7_5_3.sce
new file mode 100755
index 000000000..ff68835ff
--- /dev/null
+++ b/1655/CH7/EX7.5.3/Example_7_5_3.sce
@@ -0,0 +1,19 @@
+// Example 7.5.3  page 7.24

+

+clc;

+clear;

+

+lamda1=1300d-9;

+lamda2=1600d-9;

+h=6.625d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+eta=90/100; //quantum efficiency

+E=0.73;      //energy gap in eV

+R1=eta*q*lamda1/(h*c);

+R2=eta*q*lamda2/(h*c);

+lamdac=1.24/E;

+

+printf("\nResponsivity at 1300nm is %.2f A/W.\nResponsivity at 1600nm is %.2f A/W.\nCut-off wavelength is %.1f micrometer.",R1,R2,lamdac);

+

+//R1 is calculated as 0.92 in the book, deviation of 0.02.

diff --git a/1655/CH7/EX7.5.4/Example_7_5_4.sce b/1655/CH7/EX7.5.4/Example_7_5_4.sce
new file mode 100755
index 000000000..046d30cf7
--- /dev/null
+++ b/1655/CH7/EX7.5.4/Example_7_5_4.sce
@@ -0,0 +1,18 @@
+// Example 7.5.4  page 7.25

+

+clc;

+clear;

+

+lamda=0.8d-6;

+h=6.625d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+ne=1.8d11;  //electrons collected

+np=4d11;    //photons incident

+

+eta=ne/np;      //computing quantum efficiency

+R=eta*q*lamda/(h*c);    //computing responsivity

+

+printf("\nResponsivity of photodiode at 0.8 micrometer is %.3f A/W.",R);

+

+//answer in the book is 0.289. deviation of 0.001 A/W

diff --git a/1655/CH7/EX7.5.5/Example_7_5_5.sce b/1655/CH7/EX7.5.5/Example_7_5_5.sce
new file mode 100755
index 000000000..458cd4ba8
--- /dev/null
+++ b/1655/CH7/EX7.5.5/Example_7_5_5.sce
@@ -0,0 +1,22 @@
+

+// Example 7.5.5  page 7.25

+

+clc;

+clear;

+

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+eta=70/100; //quantum efficiency

+I=3d-6;     //photocurrent 

+E=1.8d-19;  //energy of photns

+q=1.6d-19;  //charge of electron

+

+lamda=h*c/E;   //computing wavelength

+R=eta*q*lamda/(h*c);    //computing responsivity

+Popt=I/R;       //computing optical power

+lamda=lamda*10^6;

+Popt=Popt*10^6;

+

+printf("\nWavelength is %.2f micrometer.\nResponsivity is %.3f A/W.\nIncident optical power required is %.3f microWatt.",lamda,R,Popt);

+

+//answer of Popt in the book is calculated as 4.823, deviation of 0.002

diff --git a/1655/CH7/EX7.5.6/Example_7_5_6.sce b/1655/CH7/EX7.5.6/Example_7_5_6.sce
new file mode 100755
index 000000000..f6343040f
--- /dev/null
+++ b/1655/CH7/EX7.5.6/Example_7_5_6.sce
@@ -0,0 +1,18 @@
+// Example 7.5.6  page 7.26

+

+clc;

+clear;

+

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+E=1.35;      //energy gap in eV

+

+lamda=h*c/(q*E);   //computing wavelength

+lamda=lamda*10^6;

+

+printf("\nThe InP photodetector will stop operation above %.2f micrometer.",lamda);

+printf("\nNOTE - calculation error in the book");

+

+//calculation error in the book

+//answer in the book 1.47 micrometer.(incorrect)

diff --git a/1655/CH7/EX7.5.7/Example_7_5_7.sce b/1655/CH7/EX7.5.7/Example_7_5_7.sce
new file mode 100755
index 000000000..31aa49ae6
--- /dev/null
+++ b/1655/CH7/EX7.5.7/Example_7_5_7.sce
@@ -0,0 +1,22 @@
+

+// Example 7.5.7  page 7.27

+

+clc;

+clear;

+

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+eta=65/100; //quantum efficiency

+I=2.5d-6;     //photocurrent 

+E=1.5d-19;  //energy of photns

+q=1.6d-19;  //charge of electron

+

+lamda=h*c/E;   //computing wavelength

+R=eta*q*lamda/(h*c);    //computing responsivity

+Popt=I/R;       //computing optical power

+lamda=lamda*10^6;

+Popt=Popt*10^6;

+

+printf("\nWavelength is %.3f micrometer.\nResponsivity is %.3f A/W.\nIncident optical power required is %.1f microWatt.",lamda,R,Popt);

+

+//answer of R(responsivity) in the book is calculated as 0.694 A/W, deviation of 0.001.

diff --git a/1655/CH7/EX7.5.8/Example_7_5_8.sce b/1655/CH7/EX7.5.8/Example_7_5_8.sce
new file mode 100755
index 000000000..b28574db1
--- /dev/null
+++ b/1655/CH7/EX7.5.8/Example_7_5_8.sce
@@ -0,0 +1,10 @@
+// Example 7.5.8  page 7.27

+

+clc;

+clear;

+

+ne=3.9d6;  //electrons collected

+np=6d6;    //photons incident

+

+eta=100*ne/np;  //computing efficiency

+printf("\nQuantum efficiency is %d percent.",eta);

diff --git a/1655/CH7/EX7.8.1/Example_7_8_1.sce b/1655/CH7/EX7.8.1/Example_7_8_1.sce
new file mode 100755
index 000000000..0993d17c8
--- /dev/null
+++ b/1655/CH7/EX7.8.1/Example_7_8_1.sce
@@ -0,0 +1,20 @@
+// Example 7.8.1  page 7.39

+

+clc;

+clear;

+

+w=25d-6;    //width

+v=1d5;      //velocity

+r=40d-6;    //radius

+eps=12.5d-13;

+

+t=w/v;      //computing drift time

+c=eps*3.14*(r)^2/w;     //computing junction capacitance

+c=c*10^16;

+printf("\nDrift time %.1e sec.\nJunction capacitance %.1f pf.",t,c);

+printf("\nCalculation error in the book at the answer of drift time.");

+

+//calculation error in drift time answer in the book is 25*10^-10. it should be 2.5*10^-10.

+

+

+

diff --git a/1655/CH7/EX7.8.2/Example_7_8_2.sce b/1655/CH7/EX7.8.2/Example_7_8_2.sce
new file mode 100755
index 000000000..5b6c09f4d
--- /dev/null
+++ b/1655/CH7/EX7.8.2/Example_7_8_2.sce
@@ -0,0 +1,17 @@
+// Example 7.8.2  page 7.39

+

+clc;

+clear;

+

+w=20d-6;    //width

+v=4d4;      //velocity

+

+t=w/v;      //computing drift time

+BW=(2*%pi*t)^-1;        //computing bandwidth

+rt=1/BW;    //computing response time

+rt=rt*10^9;

+

+printf("\nMaximum response time is %.1f ns.",rt);

+printf("\nNOTE - Calculation error in the book.");

+

+//Calculation error in the book, answer given is 6.2ns

diff --git a/1655/CH7/EX7.9.1/Example_7_9_1.sce b/1655/CH7/EX7.9.1/Example_7_9_1.sce
new file mode 100755
index 000000000..babda257b
--- /dev/null
+++ b/1655/CH7/EX7.9.1/Example_7_9_1.sce
@@ -0,0 +1,19 @@
+// Example 7.9.1  page 7.45

+

+clc;

+clear;

+

+lamda=1.4d-6;

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+eta=65/100; //quantum efficiency

+I=10d-9;    //current

+

+NEP= h*c*sqrt(2*q*I)/(eta*q*lamda);

+D=NEP^-1;

+

+printf("\nNoise equivalent power is %.3e W.\nSpecific directivity is %.2e.",NEP,D);

+

+//answers in the book for NEP is 7.683*10^-14, deviation of 0.04*10^-14.

+//answers in the book for D is 13.01 *10^12, deviation of 0.11*10^12.

diff --git a/1655/CH7/EX7.9.2/Example_7_9_2.sce b/1655/CH7/EX7.9.2/Example_7_9_2.sce
new file mode 100755
index 000000000..56b33e754
--- /dev/null
+++ b/1655/CH7/EX7.9.2/Example_7_9_2.sce
@@ -0,0 +1,27 @@
+// Example 7.9.2  page 7.46

+

+clc;

+clear;

+

+lamda=1300d-9;

+h=6.626d-34;    //plank's constant

+c=3d8;      //speed of light

+q=1.6d-19;  //charge of electron

+eta=90/100; //quantum efficiency

+P0=300d-9;  //optical power

+Id=4;    //dark current

+B=20d6;     //bandwidth

+K=1.39d-23; //Boltzman constant

+T=298;      //temperature

+R=1000;     //load resister

+Ip= 10^9*eta*P0*q*lamda/(h*c);

+Its=10^9*(2*q*B*(Ip+Id));

+Its=sqrt(Its);

+printf("\nrms shot noise current is %.2f nA.",Its);

+

+It= 4*K*T*B/R;

+It=sqrt(It);

+printf("\nThermal noise is %.2e A.",It);

+

+//answer given in book for shot noise is 1.34nA, deviation of 0.01nA.

+//answer given in book for Thermal noise it is 1.81*10^-8 A, deviation of 0.01*10^-8.