GYXTW53 Buried Optical Cable
In the local communication networks of cities and towns, buried optical cables are responsible for connecting telecommunications bureaus, base stations, residential areas, commercial buildings, enterprise parks and other places. Like the fiber-optic home entry project in residential areas, communication signals are introduced into the community through buried optical cables, and then connected to various households to provide users with high-speed and stable broadband Internet access, high-definition TV, fixed-line telephone and other services; in commercial buildings and enterprise parks, buried optical cables ensure the communication needs of internal office networks, security monitoring, intelligent management and other systems
product parameters
1. Structural parameters: Phosphated steel wire is generally used, which has high tensile strength, which can provide the necessary tensile resistance for the optical cable during laying and use, and ensure the stability of the optical cable structure.
2, optical fiber bundle tube: located on the outside of the central reinforcement, made of high-density polyethylene (HDPE) or polybutylene terephthalate (PBT). Multiple optical fibers are placed in the tube and filled with special fiber paste. The fiber paste can play the role of moisture resistance and buffering, effectively protecting the optical fiber from external stress and moisture.
3, armor layer: composed of a double-layer structure, the inner layer is a single steel wire armor, and the outer layer is a wrinkled steel belt. This kind of armor gives the cable excellent compression, tensile and impact resistance, which can resist various external forces such as soil extrusion and rock collision in the buried environment.
4, outer sheath: usually black polyethylene (PE) material, has good weather resistance, UV resistance and chemical corrosion resistance, can adapt to different soil and climate conditions, prolong the service life of the cable.
5, fiber type: commonly used single mode fiber, such as G.652D, G.657A1 and so on. G.652D fiber is suitable for 1310nm and 1550nm wavelength windows, and has low attenuation characteristics in long-distance transmission; G.657A1 fiber is a bend-insensitive fiber, which can maintain good transmission performance under a small bending radius, and is suitable for use in complex laying environments.
6, the number of fiber cores: common 4 cores, 6 cores, 8 cores, 12 cores, etc., can be selected according to actual communication needs, and can support up to 24 cores.
7, fiber attenuation: at 1310nm wavelength, the attenuation of G.652D single-mode fiber is generally 0.36dB/km; at 1550nm wavelength, the attenuation is generally 0.22dB/km.
8, tensile strength: short-term (during laying), the minimum tensile force that the optical cable can withstand is generally 3000N; long-term (during operation), the minimum tensile force that can withstand 1000N.
9, compressive strength: the radial pressure that can be withstood is generally 3000N/100mm, to ensure that when subjected to external pressures such as soil, the optical fiber inside the optical cable will not be damaged, and to ensure the normal progress of communication.
10 Bending radius: The static bending radius is generally not less than 10 times the outer diameter of the optical cable, and the dynamic bending radius is not less than 20 times the outer diameter of the optical cable. If the bending radius is too small, it will cause the attenuation of the optical fiber to increase and affect the quality of communication.
11, working temperature range: generally between -40 ℃~ + 60 ℃, in this temperature range, the cable can maintain stable performance, to meet the requirements of different seasons in different regions.
12, waterproof performance: with good waterproof ability, through the fiber paste in the fiber bundle tube and the overall sealing structure, to achieve longitudinal water resistance, under the specified test conditions (such as 24 hours), the longitudinal water permeability distance is usually 0.1m.
13, anti-corrosion performance: PE material of the outer sheath and the anti-corrosion treatment of the armor layer, so that the cable can resist the general soil chemical erosion, in some areas with special corrosive environment, can also be further enhanced by special protective treatment anti-corrosion ability
