Working of optical fiber
An optical fiber consists of a very thin transparent fiber designed to guide light wave along this length. It works on the principle of total internal reflection. When light enters one end of the fiber it undergoes successive total internal reflection from side wall and travel down the length of the fiber in a zig-zag path with minimum losses.
Working of Optical fiber
Constriction of optical fiber
There are three primary section of optical fiber-
- Core
- Cladding
- Sheath
Core
The thinnest and the inner most region which guides light information through it in called core.
It is drown from a furnace containing molten silica with small amount of additives to permit the control of reflective index.
Cladding
Core is surrounded by a coaxial middle region of lesser refractive index than core material, is called cladding. It provides us the condition of total internal reflection to the propagation light signals and minimises the loss.
Sheath
The outermost coaxial covering which protects the cladding and core from abrasion, contamination and harmful influence of moisture is called sheath. It also gives mechanical strength to the fiber.
