about optical fiber communication

1. OPTICAL FIBRE COMMUNICATION
PRESENTED BY
B.ABINAYA
1115011013924
B.TECH(ECE)

2. SYNOPSIS
• INTRODUCTION
• OPTICAL COMMUNICATION
• TOTAL INTERNAL REFLECTION
• PROPAGATION
• SINGLE MODE OPTICAL FIBRE
• MULTI MODE OPTICAL FIBRE
• CONSTRUCTION OF OPTICAL FIBER
• APPLICATION

3. INTRODUCTION
• Fibre optic communication has revolutionised the telecommunication
industry
• It has also made its presence widely felt within the data networking
community as well
• Fibre optic cable , optical communication have enabled
telecommunications links to be made over greater distance
• optical communication has enabled much higher data

4. BASIC COMMUNICATION OF FIBER OPTIC
TRANSMITTER
1
OPTICAL FIBER
2
RECEIVER
3

5. TOTAL INTERNAL REFLECTION
Light traveling in an optical dense medium
1
Fiber optic cables use total internal reflection
2
The light enters the optical fiber , and every time
It strikes the edge of the fiber3
CRITICAL ANGLE for the media , the light will be
Completely reflected4

6. PROPAGATION
There are two type:
 Single mode optical fiber
Multi mode optical fiber

7. SINGLE MODE OPTICAL FIBER
2
Used in telephone
and cable TV
1
This mode of
optical fiber are
used to transmit
one signal per
fiber
3
They have small
cores in 9 microns
in diameter
4
single-mode fiber
smaller core (10
Micrometers)
5
Longer , higher-
performance links

8. MULTI MODE OPTICAL FIBRE

9. CONSTRUCTION OF OPTICAL FIBER
 Core –thin glass centerbof fiber where lights
travels
 Buffer coating – plastic coating that protect the
fiber

10. CONCLUSION
• The transmitter converts the input signal to an optical signal
• The transmitter drive circuit converts the electrical signal to an
optical signal
• The optical source lauches the optical singal into the fiber