From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:27:19 +0530 Subject: initial commit / add all books --- 3822/CH5/EX5.1/Ex5_1.jpg | Bin 0 -> 160031 bytes 3822/CH5/EX5.1/Ex5_1.sce | 20 ++++++++++++++++++++ 3822/CH5/EX5.2/Ex5_2.jpg | Bin 0 -> 160322 bytes 3822/CH5/EX5.2/Ex5_2.sce | 21 +++++++++++++++++++++ 3822/CH5/EX5.3/Ex5_3.jpg | Bin 0 -> 142941 bytes 3822/CH5/EX5.3/Ex5_3.sce | 14 ++++++++++++++ 3822/CH5/EX5.4/Ex5_4.jpg | Bin 0 -> 160924 bytes 3822/CH5/EX5.4/Ex5_4.sce | 18 ++++++++++++++++++ 3822/CH5/EX5.5.A/Ex5_5_A.jpg | Bin 0 -> 145407 bytes 3822/CH5/EX5.5.A/Ex5_5_A.sce | 14 ++++++++++++++ 3822/CH5/EX5.5/Ex5_5.jpg | Bin 0 -> 145145 bytes 3822/CH5/EX5.5/Ex5_5.sce | 14 ++++++++++++++ 3822/CH5/EX5.6/Ex5_6.jpg | Bin 0 -> 172820 bytes 3822/CH5/EX5.6/Ex5_6.sce | 25 +++++++++++++++++++++++++ 3822/CH5/EX5.7/Ex5_7.jpg | Bin 0 -> 162296 bytes 3822/CH5/EX5.7/Ex5_7.sce | 19 +++++++++++++++++++ 16 files changed, 145 insertions(+) create mode 100644 3822/CH5/EX5.1/Ex5_1.jpg create mode 100644 3822/CH5/EX5.1/Ex5_1.sce create mode 100644 3822/CH5/EX5.2/Ex5_2.jpg create mode 100644 3822/CH5/EX5.2/Ex5_2.sce create mode 100644 3822/CH5/EX5.3/Ex5_3.jpg create mode 100644 3822/CH5/EX5.3/Ex5_3.sce create mode 100644 3822/CH5/EX5.4/Ex5_4.jpg create mode 100644 3822/CH5/EX5.4/Ex5_4.sce create mode 100644 3822/CH5/EX5.5.A/Ex5_5_A.jpg create mode 100644 3822/CH5/EX5.5.A/Ex5_5_A.sce create mode 100644 3822/CH5/EX5.5/Ex5_5.jpg create mode 100644 3822/CH5/EX5.5/Ex5_5.sce create mode 100644 3822/CH5/EX5.6/Ex5_6.jpg create mode 100644 3822/CH5/EX5.6/Ex5_6.sce create mode 100644 3822/CH5/EX5.7/Ex5_7.jpg create mode 100644 3822/CH5/EX5.7/Ex5_7.sce (limited to '3822/CH5') diff --git a/3822/CH5/EX5.1/Ex5_1.jpg b/3822/CH5/EX5.1/Ex5_1.jpg new file mode 100644 index 000000000..36c48b52f Binary files /dev/null and b/3822/CH5/EX5.1/Ex5_1.jpg differ diff --git a/3822/CH5/EX5.1/Ex5_1.sce b/3822/CH5/EX5.1/Ex5_1.sce new file mode 100644 index 000000000..d808eae32 --- /dev/null +++ b/3822/CH5/EX5.1/Ex5_1.sce @@ -0,0 +1,20 @@ + + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.1 +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +Tc=727;//temperature in celcius +lamda=0.5*10^-6;//wavength of emitting radiation in M +h=6.626*10^-34;//Plank's constant in SI units +KB=1.38*10^-23;//boltzman constant in SI units +c=3*10^8;//speed of light in m/s +f=c/lamda;//frequency in Hz +T=Tc+273;//temperature in kelvin +c1=(h*f)/(KB*T);//constant value +B21byA21Pf=1/(exp(c1)-1);//ratio of stimulated and spontaneous emission rate +mprintf("\n Ratio between stimulated and spontaneous emission is =%.1fx10^-13",B21byA21Pf*1e13); //multiplication by 1e13 to convert the ratio to 10^-13 diff --git a/3822/CH5/EX5.2/Ex5_2.jpg b/3822/CH5/EX5.2/Ex5_2.jpg new file mode 100644 index 000000000..5621edd77 Binary files /dev/null and b/3822/CH5/EX5.2/Ex5_2.jpg differ diff --git a/3822/CH5/EX5.2/Ex5_2.sce b/3822/CH5/EX5.2/Ex5_2.sce new file mode 100644 index 000000000..6dd24e9ce --- /dev/null +++ b/3822/CH5/EX5.2/Ex5_2.sce @@ -0,0 +1,21 @@ + + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.2 +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +n=3.8;//refractive index +L=200*10^-4;//length in cm +W=100*10^-4;//width in cm +Beta=20*10^-3;//gain factor in A/cm^3 +alpha=10;//loss coefficient per cm +R1=((n-1)/(n+1))^2;//reflectivity +c1=((alpha+((1/L)*(log(1/R1)))))//constant value +Jth=(1/Beta)*c1;//threshold current density in A/cm^2 +mprintf("\n Threshold current density is= %.2f x10^3 A/cm^2",Jth*1e-3);//multiplication by 1e-3 to convert the ratio to 10^-3 +Ith=Jth*L*W;//threshold current in A +mprintf("\n Threshold current is =%.2f mA",Ith*1e3);//the answer vary due to rouding diff --git a/3822/CH5/EX5.3/Ex5_3.jpg b/3822/CH5/EX5.3/Ex5_3.jpg new file mode 100644 index 000000000..db85d1cb7 Binary files /dev/null and b/3822/CH5/EX5.3/Ex5_3.jpg differ diff --git a/3822/CH5/EX5.3/Ex5_3.sce b/3822/CH5/EX5.3/Ex5_3.sce new file mode 100644 index 000000000..e871b82a0 --- /dev/null +++ b/3822/CH5/EX5.3/Ex5_3.sce @@ -0,0 +1,14 @@ + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.3 +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +Br=7.21*10^-10;//injected electron density +Pn=10^18;//majority carrier hole density in/cm^3 +Gamar=1/(Br*Pn);//minority carrier life time +mprintf("\n Minority carrier life time is =%.2f ns ",Gamar*1e9);// the answer vary due to roundingoff +//multiplication by 1e9 to convert the unit to nm diff --git a/3822/CH5/EX5.4/Ex5_4.jpg b/3822/CH5/EX5.4/Ex5_4.jpg new file mode 100644 index 000000000..f72dafd2f Binary files /dev/null and b/3822/CH5/EX5.4/Ex5_4.jpg differ diff --git a/3822/CH5/EX5.4/Ex5_4.sce b/3822/CH5/EX5.4/Ex5_4.sce new file mode 100644 index 000000000..679f6485a --- /dev/null +++ b/3822/CH5/EX5.4/Ex5_4.sce @@ -0,0 +1,18 @@ + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.5 +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +lamda=0.85*1e-6;//wavelength of GaAs in m +n1=3.6;//refractive index +L=200e-6//length of the cavity in m +K=L*(2*n1)/lamda;//number of modes +mprintf("\n Number of modes=%.0f ",K);//the answer vary due to rounding//multiplication by 1e6 to convert the unit to um +u=2*n1*L;//partial product +v=(lamda)^2;//partial product +dellamda=v/u;//separation wavelength between the two mode in m +mprintf("\nThe separation wavelength between the two mode=%.2f nm",dellamda*1e9);//multiplication by 1e9 to convert the unit to nm// the answer given in textbook is wrong the unit is nm but the textbook gives it as um diff --git a/3822/CH5/EX5.5.A/Ex5_5_A.jpg b/3822/CH5/EX5.5.A/Ex5_5_A.jpg new file mode 100644 index 000000000..abaaeddbe Binary files /dev/null and b/3822/CH5/EX5.5.A/Ex5_5_A.jpg differ diff --git a/3822/CH5/EX5.5.A/Ex5_5_A.sce b/3822/CH5/EX5.5.A/Ex5_5_A.sce new file mode 100644 index 000000000..61bd16e5b --- /dev/null +++ b/3822/CH5/EX5.5.A/Ex5_5_A.sce @@ -0,0 +1,14 @@ + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.5(A) +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +etaT=0.20//total efficiency +Eg=1.43//bandgap energy in eV +V=2.5//applied voltage in V +etae=etaT*Eg*100/V//external power efficiency +mprintf("\n External power efficiency =%.2f percent ",etae); diff --git a/3822/CH5/EX5.5/Ex5_5.jpg b/3822/CH5/EX5.5/Ex5_5.jpg new file mode 100644 index 000000000..dd82085a9 Binary files /dev/null and b/3822/CH5/EX5.5/Ex5_5.jpg differ diff --git a/3822/CH5/EX5.5/Ex5_5.sce b/3822/CH5/EX5.5/Ex5_5.sce new file mode 100644 index 000000000..bc201eb1d --- /dev/null +++ b/3822/CH5/EX5.5/Ex5_5.sce @@ -0,0 +1,14 @@ + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.5 +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +etaT=0.18//total efficiency +Eg=1.43//bandgap energy in eV +V=2.5//applied voltage in V +etae=etaT*Eg*100/V//external power efficiency +mprintf("\n External power efficiency =%.0f percent ",etae); diff --git a/3822/CH5/EX5.6/Ex5_6.jpg b/3822/CH5/EX5.6/Ex5_6.jpg new file mode 100644 index 000000000..b0eb1c285 Binary files /dev/null and b/3822/CH5/EX5.6/Ex5_6.jpg differ diff --git a/3822/CH5/EX5.6/Ex5_6.sce b/3822/CH5/EX5.6/Ex5_6.sce new file mode 100644 index 000000000..023e2df79 --- /dev/null +++ b/3822/CH5/EX5.6/Ex5_6.sce @@ -0,0 +1,25 @@ + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.6 +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +T1=273+20;//first temperature for an AlGaAs injection laser diode in kelvin +T2=273+80;//second temperature for an AlGaAs injection laser diode in kelvin +T01=160;//first thershold temperature in kelvin +T02=55;//second thershold temperature in kelvin; + +//case 1: +Jth120C=exp(T1/T01); +Jth180C=exp(T2/T01); +Jth1=Jth180C/Jth120C; +mprintf("\n The ratio of threshold current densities for AlGaAs=%.2f",Jth1);//the answer vary due to rounding + +//case 2: +Jth220C=exp(T1/T02); +Jth280C=exp(T2/T02); +Jth2=Jth280C/Jth220C; +mprintf("\n The ratio threshold current densities for InGaAs=%.2f",Jth2); diff --git a/3822/CH5/EX5.7/Ex5_7.jpg b/3822/CH5/EX5.7/Ex5_7.jpg new file mode 100644 index 000000000..c224f45c0 Binary files /dev/null and b/3822/CH5/EX5.7/Ex5_7.jpg differ diff --git a/3822/CH5/EX5.7/Ex5_7.sce b/3822/CH5/EX5.7/Ex5_7.sce new file mode 100644 index 000000000..f21c2d09c --- /dev/null +++ b/3822/CH5/EX5.7/Ex5_7.sce @@ -0,0 +1,19 @@ + +//OptoElectronics and Fibre Optics Communication, by C.K Sarkar and B.C Sarkar +//Example 5.7 +//OS=Windows 10 +////Scilab version Scilab 6.0.0-beta-2(64 bit) +clc; +clear; + +//given +lamda=0.85*1e-6;//wavelength of GaAs in m +n1=3.6;//refractive index +K=1700//number of modes +L=K*lamda/(2*n1);//length of the cavity in m +mprintf("\n Length of cavity in the laser=%.0f um",L*1e6);//the answer vary due to rounding//multiplication by 1e6 to convert the unit to um +u=2*n1*L;//partial product +v=(lamda)^2;//partial product +dellamda=v/u;//separation wavelength between the two mode in m +mprintf("\nThe separation wavelength between the two mode=%.2f nm",dellamda*1e9);//multiplication by 1e9 to convert the unit to nm// the answer given in textbook is wrong the unit is nm but the textbook gives it as um + -- cgit