What is optical fiber

Optical fiber communication optical fiber is an essential facility. From the cores, cladding, coating layer and the jacket of four parts. When the light from the fiber into the goal at the end of the wick, the light will be reflected in the optical fiber was removed, was "the" shape forward, to the other end of the fiber.


       Light to the glass fiber or plastic optical fiber transmission is the use of different in refractive index at the interface of two substances have a "total reflection" effect of the principle. In order to prevent the transmission of light in the process of "disclosure" must be put to the glass filaments, "jacket", so it is glass fiber or plastic fiber-optic lines are mainly from the core and cladding of two parts. The structure was a cylindrical fiber, the middle is 8 microns in diameter or 50 micron core, with a high refractive index, low refractive index outside of the package wrapped in layers, the outermost plastic sheath, the external diameter of 125 microns, special manufacturing processes, special materials, so that both the thin fiber like hair, soft as silk, and a high resistance to strength, great resistance to pressure.

       Since the refractive index of the cladding refractive index than the core wire is small, so that the light wire into the line in the core and cladding interface and total reflection on the many twists and turns to make, not through the interface, as if the light is tightly clad to close the wire, so that light can only be transmitted along the wire, as if the water flow only in the water in the same


        Light also has wave properties, so can be equated with sound waves, electromagnetic waves pass the same signal. Acceptance with special equipment, coupled with the transmission fiber conduit role, the completion of the optical fiber of the entire work