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Post on 09-Apr-2017
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OPTICAL FIBRE COMMUNICATION
PRESENTED BY
B.ABINAYA
1115011013924
B.TECH(ECE)
SYNOPSIS
• INTRODUCTION
• OPTICAL COMMUNICATION
• TOTAL INTERNAL REFLECTION
• PROPAGATION
• SINGLE MODE OPTICAL FIBRE
• MULTI MODE OPTICAL FIBRE
• CONSTRUCTION OF OPTICAL FIBER
• APPLICATION
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
BASIC COMMUNICATION OF FIBER OPTIC
TRANSMITTER
1OPTICAL FIBER
2RECEIVER
3
TOTAL INTERNAL REFLECTION
Light traveling in an optical dense medium1Fiber optic cables use total internal reflection 2
The light enters the optical fiber , and every timeIt strikes the edge of the fiber3
CRITICAL ANGLE for the media , the light will beCompletely reflected4
PROPAGATION
There are two type: Single mode optical fiberMulti mode optical fiber
SINGLE MODE OPTICAL FIBER
2
Used in telephone and cable TV
1This mode of
optical fiber are used to transmit
one signal per fiber
3They have small
cores in 9 microns in diameter
4
single-mode fiber smaller core (10
Micrometers)
5Longer , higher-
performance links
MULTI MODE OPTICAL FIBRE
This type of optical fiber are used to transmit Many signals
Used in computer network
They have larger cores (62.5 microns in diameter
Transmit infra-red Light from LED
1
2
3
4
5
CONSTRUCTION OF OPTICAL FIBER
Core –thin glass centerbof fiber where lights travels
Buffer coating – plastic coating that protect the fiber
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
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