Fiber Fabrication and Attenuation Fiber Advantages

Optical fiber cable is manufactured to meet optical, mechanical or environmental performance specifications, it utilizes one or more optical fibers placed in a sheath as the transmission medium and can be used individually or in groups Communication cable assemblies.

1) Optical fiber manufacturing:

At present, optical fiber manufacturing methods mainly include: in-tube CVD (chemical vapor deposition) method, in-rod CVD method, PCVD (plasma chemical vapor deposition) method and VAD (axial vapor deposition) method.

2) Attenuation of fiber:

The main factors that cause fiber attenuation are: intrinsic, bending, extrusion, impurities, non-uniformity and butt joint.

Intrinsic: It is the inherent loss of the fiber, including: Rayleigh scattering, intrinsic absorption, etc.

Bending: When the fiber is bent, part of the light in the fiber will be lost due to scattering, resulting in loss.

Squeeze: Loss caused by tiny bends in an optical fiber when it is squeezed.

Impurities: Losses caused by impurities in the fiber absorbing and scattering light propagating in the fiber.

Non-uniformity: Loss caused by non-uniform refractive index of the fiber material.

Docking: The loss generated when the optical fiber is docked, such as: different axes (the coaxiality of single-mode fiber is required to be less than 0.8μm), the end face is not perpendicular to the axis, the end face is not flat, the butt core diameter does not match and the welding quality is poor.

Advantages of fiber optics:

1) The passband of the optical fiber is very wide. Theoretically, it can reach 3 billion megahertz.

2) The length of the non-relay section is tens to more than 100 kilometers, and the copper wire is only a few hundred meters.

3) Not affected by electromagnetic fields and electromagnetic radiation.

4) Light weight and small size. For example: 900 pairs of twisted-pair cables with 21,000 voice channels, the diameter is 3 inches, and the weight is 8 tons/KM. The optical fiber cable with ten times the communication capacity has a diameter of 0.5 inches and a weight of 450P/KM.

5) Optical fiber communication is not electrified, and can be used in flammable and violent places for safe use.

6) The use of a wide range of ambient temperature.

7) Chemical corrosion, long service life.

The above is the entire content of optical fiber manufacturing and attenuation, and the advantages of optical fiber. If you want to know more about optical fiber wiring, you can continue to pay attention to ZR Cable official website.