The main factors that cause attenuation of the fiber They are: intrinsic, flexing, extrusion, impurities, lack of uniformity, and coupling.
1. Intrinsic: This is the inherent loss of the fiber, including: Rayleigh scattering, intrinsic absorption, etc.
2. Bending: When the optical fiber is bent, some of the light in the optical fiber will be lost due to dispersion, resulting in a loss.
3. Grip: The loss caused by the slight bending of the optical fiber when it is squeezed.
4. Impurity: The loss caused by impurities in the fiber that absorb and scatter the light that propagates in the fiber.
5. Unequal: The loss caused by the unequal refractive index of the material fiber.
6. Butt joint: the loss generated when the optical fiber is coupled, such as: non-axial (the coaxiality of the single-mode optical fiber must be less than 0.8 μm), the end face is not perpendicular to the axis, the end face is not flat, the core diameter at the butt joint does not match, and the weld quality is poor.
Post time: Sep-09-2022
