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Answer to Question #52547 in Other Programming & Computer Science for biruk

Question #52547
what are the characteristics that distinguish optical fiber from twisted pair or coaxial cable?
Expert's answer
Solution:
 
Thefollowing characteristics distinguish optical fiber from twisted pair or
coaxial cable:
 
1.     Greater capacity: thepotential bandwidth, and hence data rate, of optical fiber is immense; data
rates of 2 Gbps over tens of kilometers have been demonstrated.
 
2.     Smaller size and lighterweight: optical fibers are considerably thinner than coaxial cable or bundled
twisted-pair cable-at least an order of magnitude thinner for comparable
information-transmission capacity.
 
3.     Lower attenuation: attenuationis significantly lower for optical fiber than for coaxial cable or twisted pair
and is constant over a wide range.
 
4.     Electromagnetic isolation: opticalfiber systems are not affected by external electromagnetic fields. Thus, the
system is not vulnerable to interference, impulse noise, or crosstalk.
 
5.     Greater repeater spacing: Fewerrepeaters means lower cost and fewer sources of error. The performance of
optical fiber systems from this point of view has been steadily improving.
 

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