What is the use of the outer diameter of 12-core, 24-core, and 48-core optical cables? Some friends may want to know its cross-sectional area, and naturally want to know the outer diameter of the optical cable. So what are their outer diameters?

It is difficult to have specific data on the outer diameter without a specific model. For example, the 24-core overhead optical cable is much thinner than the outer diameter of the direct buried optical cable, and the adss overhead optical cable is also thinner than the ordinary overhead optical cable.

In the construction, the dynamic coil retention is not less than 20 times the outer diameter of the optical cable

, under static conditions, it is not less than 15 times, and there will be a mark on the outer sheath of the optical cable every distance. For example, a single-mode 12-core optical cable is expressed as: 12B1, where 9/125 represents single-mode, and 50/125 and 62.5/125 represent multi-mode.

Generally, outdoor optical cables are single-mode, because single-mode optical cables have small inter-mode dispersion, and the optical transmission distance is longer (multi-mode is also useful). Multimode optical cables are generally used for indoor wiring. Because of the large dispersion between modes, the transmission distance of multimode optical cables is limited.