optical fiber presentation 2

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

optical fiber presentation 2

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