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Fiber Optic
- (April - 2009)
In
twisted-pair cable and coaxial cable, data is transmitted in the
form of electric frequencies. So copper wire has to be protected
from water and electromagnetic waves. In fiber optic cable,
these types of problems are not occurred.
The fiber-optic cable uses light to transmit data. A
fiber-optic cable consists of hundreds of thin glass fibers or
strands of glass.
Each strand is referred to as optical fiber. Each optical fiber
is as a human hair. The glass is an insulating material, it is
because these are not affected by electromagnetic waves. Thus,
they have much lower data transmission errors.
The data
transmission speed is very high because fiber-optic cable uses
light to transmit data. The data transmission speed is up to
billions bits per second.
The disadvantages of
fiber optic cable are:
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It is more costly
and difficult to troubleshoot.
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It is difficult to
install and modify.
Therefore the
fiber-optic cable is becoming more popular and replacing all old
cable system. Today telephone, banks, and television companies
are replacing their existing telephone and coaxial cables with
fiber-optic cables.
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