A sept index fibre has a relavitive refractive index of `0.88%`. What is the critical angle at the core-cladding interface?

A step index fibre has a relative refractive index difference of 0.86% Estimate the critical angle at the core-cladding interface

A step index fibre has a relative refractive index difference of 0.86% Estimate the critical angle at the core-cladding interface

A step index fibre has a relative refractive index difference of 0.86% Estimate the critical angle at the core-cladding interface

A step index fibre has a relative refractive index difference of 0.9%.Estimate the critical angle at the core -cladding interface,when the core index is 1.46.find the numerical aperture,if the source to fiber medium is air.

A step index fibre has a relative refractive index difference of 0.9%.Estimate the critical angle at the core -cladding interface,when the core index is 1.46.find the numerical aperture,if the source to fiber medium is air.

A step index fibre has critical angel at the core-cladding interface ?

For an optical fibre ,the ratio of the refractive index of the core to the refractive index of the cladding is 1.25 . What is the critical angle at the core cladding interface ?