Tag: fibre optics basics
Questions Related to fibre optics basics
Optical fiber communication is based on which of the following phenomena:-
If parabolic profile is used for refractive index in the core, what is the name given to such core?
What is the maximum range up to which fiber optic can be used without repeater in communication systems?
In optical fibres, propagation of light is due to
An optical fibre is made of quartz filaments of refractive index 1. 70 and it has a coating of material whose refractive index is 1.45. The range of angle of incidence for one laser beam to suffer total internal reflection is
What should be the maximum acceptance angle at the air-core interface of an optical fibre if $\displaystyle { n } _{ 1 }$ and $\displaystyle { n } _{ 2 }$ are the refractive indices of the core and the cladding, respectively
Advantages of optical fibres over electrical wires is:
(A): Optical fibres are widely used to communication network.
(R) : Optical fibres are small in size, light weight, flexible and there is no scope for interference in them.
In optical fiber, refractive index of inner part is $1.68$ and refractive index of outer part is $1.44$. The numerical aperture of the fibre is
White light is a mixture of