Question

if the angle of incidence of ray is greater than the critical angle at the interface of core and cladding then the ray travels

1) in the core
2)in the cladding
3)along the interface
4)in the buffer​

Answer 1

Answer:

Total internal reflection occurs only when the angle of incidence is greater than the critical angle. If a ray enters an optic fiber at a steep angle(ii), when this ray intersects the core-cladding boundary, the angle of intersection is too large.