Optical Communication

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Optical Communication


 

Fibre optic cables are capable of conducting modulated light transmission

Advantages:

  • High bit rate - handles both speech and data

  • Better quality service as it is less susceptible to interference

  • Unaffected by electromagnetic disturbances

  • Difficult to tap into them - secure

  • Large distances covered


 

Disadvantages:

  • More expensive than other networking media

  • Only economical when the bandwidth is fully utilised or likely to be in near future

  • High cost of installation compared with copper wires


 

Light Amplification by Stimulated Emission of Radiation - A laser outputs a focused electromagnetic energy field in which all waves are at the same frequency and

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