An optical fiber consist of a solid rod of material with index of refraction nf cladded by a cylindrical shell of material with index n c Find the largest angle so that a wave incident from a medium with index n a remains in the solid rod by repeated total internal reflection from the cladding laye...

na sin Of 0c nc nc From Snells law na sin0 nf sin ...

An optical fiber consist of a solid rod of material with index of refraction nf cladded by

Question:

An optical fiber consist of a solid rod of material with index of refraction nf cladded by a cylindrical shell of material with index n_cƒ. Find the largest angle θ so that a wave incident from a medium with index n_a remains in the solid rod by repeated total internal reflection from the cladding layer.