Optical Sensors
Tutorial 1
August 07, 2014
1. The overall gain of an optical receiver is 1x10^6 V/A for an incident optical signal of 1
W using a PIN photodiode having an internal capacitance of 2 pF,
Plotting of Surfaces And Visualizing Tangents
(15BEM0043)
Q.1 Draw the 3-d plot for the following
function:a)
MATLAB CODE :
clc
clear all
syms t x y z
t=0:1:100;
x=t;
y=t.^2;
z=t.^3;
plot3(x,y,z)
OUTP
3. INTEGRATION AS AREA UNDER THE CURVE
Aim:
To write Matlab codes to evaluate the area under the curve
To visualize the area enclosed between the coordinate axes and the curve y=f(x)
A definite integr
List of Experiments
Experiment
Number
1
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4
5
6
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8
9
10
Title
INTRODUCTION TO MATLAB
To know about the MATLAB working procedures such
as saving files and basic commands and symbolic
computations
P
Electromagnetics, RF and Photonics
Devices, Circuits and Systems
MS & PhD (By Research)
M.Tech. (Microelectronics & Photonics)
January 2017
Department of Electrical Engineering
Photonics Research Grou
Intensity is a (circular symmetric) Gaussian function of radial
distance for any value of x.
Approx. 86% of the total power within a circle of Gaussian
radius w
x
w0
1
2
Optical Sensors - Tutorial 4
1.
You have to design a fiber optic gyroscope (FOG). Let the total length of the fiber loop is 500 m with an
8
attenuation of 0.4 dB/km, loop diameter of 10 cm, wavelength
Tutorial 1
Optical Sensors
1. A conventional APD with gain 20 operates at a wavelength of 1550 nm. If its responsivity at this
wavelength is 12 A/W, calculate quantum efficiency (). What is the photo-
Optical Sensors - Tutorial 5
1.
Reflectivity of FBG:
a) From coupled mode theory differential equations, derive the expression for reflectivity of a
fiber Bragg grating.
b) The core and cladding refra
Optical Sensors - Tutorial 6
1.
(a) A 40 ns pulse with 100 mW peak power at 1550 nm is passed through a 60 km SMF. Calculate the
maximum and minimum back reflected power at the receiver? Assume Raylei
Optical Sensors - Tutorial 3
1. Cavity ring down spectroscopy (CRDS) is a technique which is used to sense different
samples (gases or liquids). In this technique, a sample is filled inside a Fabry Pe
Optical Fiber Sensors
Dr.A.R.Ganesan
Associate Professor
Department of Physics
Indian Institute of Technology Madras
Chennai 600 036, India.
[email protected]
What is a sensor?
A device that responds to
Tutorial 1 solutions
August 14, 2014
1.
I
a) Responsivity (R)= PP => IP = 0.9A
in
Vout = Gain I p = 0.9 V
Vout = IP RL =>RL = 1M
b)
(a) Schematic
(b) NEC
Figure 1: Direct Loading
1
(a) Schematic
(b) N
Optical Communications
Dr. A. R. Ganesan
Department of Physics
Indian Institute of Technology Madras
Chennai - 600 036
[email protected]
Communication systems
Communication systems
Acoustical
Optical
El
Tutorial 2
Optical Sensors
1. Gesture Recognition System Design:
Design a gesture recognition system with a spatial resolution of 1 cm over a range of 2 m x 2 m.
Assume that detector has a noise varia
Q.1 Draw the 3-d plot for the following
function:a)
MATLAB CODE :
clc
clear all
syms t x y z
t=0:1:100;
x=t;
y=t.^2;
z=t.^3;
plot3(x,y,z)
OUTPUT FIGURE :
5
x10
10
8
6
4
2
0
10000
5000
0
0
20
40
60
80