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

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 3506/CH4/EX4.1/Ex_4_1.sce |  23 +++++++++++++++++++++++
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+//Optical Fiber communication by A selvarajan
+//example 4.1
+//OS=Windows XP sp3
+//Scilab version 5.5.1
+clc;
+clear all;
+//given  
+tau_r=12*10^-9//radiative recombination time in s
+tau_nr=35*10^-9//non-radiative recombination time in s
+n1=3.5//refractive index of semiconductor
+n2=1//refractive index of air
+d=0.4*10^-6//active later thickness in m
+V=8//recombination velocity
+eta_int=1/(1+(tau_r/tau_nr))//internal quantum efficiency
+tau=1/((tau_r^-1)+(tau_nr^-1)+(2*V/d))//total recombination time in s
+f=sqrt(3)/(2*%pi*tau)//bandwidth in Hz
+F3=((n1-n2)^2/(n1+n2)^2)//fresnel reflection 
+eta_ext=eta_int*(1-F3)//external quantum efficiency
+mprintf("internal quantum efficiency=%f",eta_int)//The answers vary due to round off error
+mprintf("\ntotal recombination time =%f ns",tau*1e9)//multiplication by 1e9 to convert unit from s to ns//The answers vary due to round off error
+mprintf("\nbandwidth =%f MHz",f*1e-6)//multiplication by 1e-6 to convert unit from Hz to MHz///The answers vary due to round off error
+mprintf("\nfresnel reflection=%f ",F3)//The answers vary due to round off error
+mprintf("\nexternal quantum efficiency=%f",eta_ext)//The answers vary due to round off error
-- 
cgit