Define the term multimode fiber,step index fiber,Graded index fiber and single mode fiber.

Define the term multimode fiber,step index fiber,Graded index fiber and single mode fiber. 
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1 Answer

Answer :

Multimode fiber: A fiber having core radius large,supports hundreads of modes & lesser bandwidth also suitable for short distance communication is called Multi mode fiber. 


Step index fiber: For an optical fiber, a step-index profile is a refractive index profile characterized by a uniform refractive index within the core and a sharp decrease in refractive index at the corecladding interface so that the cladding is of a lower refractive index


Graded-index fiber: The core refractive index is made to vary as a function of the radial distance from the center of the fiber is called Graded index fiber


Single mode fiber: A fiber having core radius small,supports one mode of operation & larger bandwidth also suitable for long distance communication is called single mode fiber.

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