The major risk factors for optical fiber attenuation,

fiber attenuation caused by the main factors are: intrinsic, bending, extrusion, impurities, uneven docking, etc. Intrinsic: is the inherent of the fiber loss, including: Rayleigh scattering, intrinsic absorption, etc. Bending: light in optical fiber bending part of the optical fiber may be lost due to scattering, causing wear and tear. Squeeze: optical fiber squeeze produced in small bending caused by the loss. Impurities: fiber impurity in light absorption and scattering in optical fiber transmission, caused by the loss. Uneven: the loss caused by the uneven refractive index of fiber materials. Docking: fiber butt when the loss, such as: no coaxial ( Single-mode fiber coaxial degree requirements less than 0. 8μ m) , end face, perpendicular to the axis of not end is not smooth, Fiber cutting production surface, it is recommended to use high precision optical fiber cutting knife) Docking, size does not match and poor welding quality. When light from one end of the optical fiber into, on the other side, the light intensity will weaken. This means that after the optical signal by optical fiber transmission, part of the light energy attenuation. It shows that some material in the fiber or for some reason, by blocking light signals. This is the transmission loss of the fiber. Only reduce the loss of optical fiber, can make the optical signal.