Optical fiber, optical fiber for short, is a kind of to achieve light in a glass or plastic fiber of total reflection principle of transmission light transmission tool.
Its action principle is what?
Optical fiber is a cylindrical dielectric waveguide, total reflection principle is applied to the transmission light.
The structure of the fiber is roughly divided into the inside of the core and the cladding of the outside all kinds of optical fiber.
In order to limit optical signals in the core, the refractive index of cladding must be less than the refractive index of the core.
The gradient refractive index of optical fiber is slowly changing, from the axis of the coated, gradually decreased;
Optical fiber in the core - the mutations
The refractive index of cladding border area is a sharp change.
The knowledge of the fiber optic Tailfeng lan cable
, everybody knows.
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