OPTICAL FIBER COMMUNICATION
Evolution of optical fiber
What is optical Fiber?
Structure of optical fiber
Total Internal Reflection
Total internal reflection in optical fiber
Classification of optical fiber
On the basis of number of modes:-
Multi-mode fiber :-
On the basis of Refractive index
Step index fiber
Graded Index fiber
Optical Fiber Communication System
Factor causing attenuation in Fiber
Variation of specific attenuation with wavelength
Attenuation & Wavelength
Advantage of optical fiber communication
Disadvantage
Applications

Advantage of optical fiber communication

The life of fiber is longer than copper wire
Handling and installation costs of optical fiber is very nominal
It is unaffected with electromagnetic interference
Attenuation in optical fiber is lower than coaxial cable or twisted pair.
There is no necessity of additional equipment for protecting against grounding and voltage problems.
As it does not radiates energy any antenna or detector cannot detects it hence provides signal security