INDEX

S No. Name of experiment Page No. Sign.

1. To study fiber optics

communication system 1

2. Setting up fiber optics analog link 5

3. Setting up fiber optics digital link 7

4. Measurement of Propagation loss

using Optical Power Meter 8

5.

Computer to Computer

communication using RS232

interface via Fiber Optic Link

9

6. Simulation of ASK using MATLAB 10

7. Simulation of ASK using MATLAB 11

Experiment:- 06

Objective:- Simulation of ASK using MATLAB

Code:-

clear all; clc; close all; f1=input('Enter the frequency of the carrier : '); f2=input('Enter the frequency of the pulse : '); a=3;%Amplitude t=0:0.001:1; x=a*sin(2*pi*f1*t); %Carrier sine wave u=a/2*square(2*pi*f2*t)+(a/2); %Square wave v=x.*u; subplot(3,1,1); plot(t,x); xlabel('Time'); ylabel('Amplitude'); title('Carrier'); grid on; subplot(3,1,2); plot(t,u); xlabel('Time'); ylabel('Amplitude'); title('Square Pulse'); grid on; subplot(3,1,3); plot(t,v); xlabel('Time'); ylabel('Amplitude'); title('Ask Signal'); grid on;

Experiment:- 07

Objective:- Simulation of PSK using MATLAB

Code:-

clear all; clc; close all; %set(0,'default','linewidth',2); f1=input('Enter the frequency of the carrier : '); f2=input('Enter the frequency of the pulse : '); a=5;%Amplitude t=0:0.001:1; x=a*sin(2*pi*f1*t); %Carrier sine wave subplot(3,1,1); plot(t,x); xlabel('Time'); ylabel('Amplitude'); title('Carrier'); grid on; u=square(2*pi*f2*t); %Message signal subplot(3,1,2); plot(t,u); xlabel('Time'); ylabel('Amplitude'); title('Message Signal'); grid on; v=x.*u; subplot(3,1,3); plot(t,v); %axis([01-66]); xlabel('Time'); ylabel('Amplitude'); title('Psk Signal'); grid on;