optical fiber presentation 2
TRANSCRIPT
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8/7/2019 optical fiber presentation 2
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ADVANTAGES OF OPTICAL FIBRE
GREATER BANDWIDTH
SMALLER SIZE AND LIGHTER WEIGHT
LESS SIGNAL LOSS
FREEDOM FROM ELECTROMAGNETIC
INTERFERENCE
CONFINEMENT SAFETY
LOWER OVERALL COST
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SATELLITE Vs OPTICAL FIBRE
SATELLITE OPTICAL FIBRE
1.One satellite covers 1/3
rd
thearea pf earth
2. Has 18 or 24 transponders so
only 180 R 24 tv channels
3.Has a limited life span of 7 to 8
year because of limitation of fuel
4. R.F. energy in UHF ,S,C,KU
bands etc. has to be created for
carrying TV signals.
5. Excellent Quality is only one
repeater in the sky.
6. Spot beam technology
Can meet local coverage
7.Cost of satellite and groundsegment around 300 crs .
1.Will require a huge network of cable forsuch a coverage
2. Has vast capacity and can easily
accommodate 100 or more TV channels
3.Has much greater life even upto 100 yrs.
In normal condition
4. Light from sources like light emitting
diode or laser forms the medium for
carrying TV signals.
5. With present state of art , repeaters
reqd. after 300 km to 400 km. even minute
impurity in glass can mar the signal.
6.Cable network (costly) necessary for the
purcise.
7.Cost may run into thousands of crores for
a very wide network presently costly . But
with increasing .Demand cost likely to