The development status of indoor fiber optic cables for indoor fiber optic cables

Communication industry, automotive industry, energy industry, rail transit industry, marine field.

The communication industry, base station construction, automotive industry, transportation industry, energy industry, these industries are closely related to the optical fiber and cable industry.

The scope of the optical fiber and cable industry is very broad, such as base station construction, communication equipment, information engineering, etc., which have a great relationship with the optical fiber and cable industry.

The water-blocking belt is longitudinally wrapped to prevent the longitudinal water seepage of the optical cable and slow start-up.

Two parallel steel wires ensure the tensile strength of the fiber optic cable.

Outdoor fiber optic cables have higher tensile strength, a thicker protective layer, and are usually armored (i.e., wrapped in metal skin). Outdoor fiber optic cables are mainly used for interconnection between buildings and remote networks.

Generally speaking, outdoor fiber optic cables are just fillers, and different materials are selected for reinforcing components and sheaths. For example, when the outdoor optical cable is directly buried, it is advisable to choose the armored optical cable for disturbing the front. When unsupported, a fiber optic cable with two or more stiffeners in a black plastic outer sheath can be used.

Outdoor optical cable because its use environment is outdoors, so it must have the function of waterproof, the outer sheath generally used is made of PE material, and then its internal structure is generally divided into central tube structure and layer stranded structure.

From the naked eye, the indoor and outdoor sheath is generally yellow or orange PVC material, and the outdoor is black PE material sheath.

Outdoor optical cable: the outer packaging is thick, with some mechanical and environmental characteristics such as pressure resistance, corrosion resistance, and tensile resistance.

Indoor optical cable: mainly used indoors, the main characteristics should be easy to bend, can be used in narrow places such as wall corners, and secondly, it must have external characteristics such as fire resistance and flame retardant, tensile resistance, and softness.

Outdoor optical cable is a kind of communication line that completes optical signal transmission. The core is composed of a certain number of optical fibers in a certain way, and is covered with a sheath, and some are also covered with an outer sheath.

Outdoor optical cables are mainly composed of optical fibers (glass filaments as thin as hair), plastic maintenance sleeves and plastic sheaths, and there are no metals such as gold, silver, copper and aluminum side cracks in the optical cable.

1. It can realize fiber to the desktop, directly connect with the computer, and improve the bandwidth and network speed.

2. The non-metallic structure can effectively protect the lightning from entering the home.

3. Glass fiber is used as the signal carrier to resist electromagnetic interference.

4. As an FTTH solution product, it can realize the effective link of three networks in one.

5. After the industrial model is fixed, it can effectively save the use of non-ferrous metals (copper) and reduce the cost of use (at present, the high level of optical fiber and optical cable is due to process technology, followed by the cost of materials, for example, G657 optical fiber is mainly reflected in the preform and wire drawing process, and the quartz glass wire that is actually used as the raw material of optical fiber is very low).

6. Strong bending resistance, using G657 optical fiber leather wire products, the bending radius can reach less than 15mm, which is convenient for indoor wiring and pipeline laying.

7. The use of flame retardant materials produces less toxic gases during combustion.

Explanation of terms: fiber optic cable.

Optical fibers, or optical fibers for short, are light conduction tools that transmit light on the principle of total reflection in fibers made of glass or plastic. Optical cable is a communication line that a certain number of optical fibers are composed of a cable core in a certain way, covered with a sheath, and some are also covered with an outer sheath to realize optical signal transmission.

How it works. Optical fibers are cylindrical dielectric waveguides that apply the principle of total reflection to conduct light. The structure of an optical fiber is roughly divided into the core part inside and the outer coating part of various optical fibers.

In order to confine the light signal to the core, the refractive index of the envelope must be less than that of the core. The refractive index of a graded fiber changes slowly, decreasing from the pivot to the coating; However, the refractive index of the mutant fiber in the core-envelope boundary region changes dramatically.

The transmission speed is fast, the signal is clear and stable, the interference is good, and the transmission traffic is large.

As the name suggests, indoor optical cables are generally suitable for indoor optical cables, which are generally divided into two types: indoor tight sleeves and branches, because it is used indoors, so he does not need to have a waterproof structure, so the softness is relatively good and the bending performance is high.

Comparatively speaking, the outdoor optical cable must have the function of waterproof because its use environment is outdoors, and the outer sheath generally used is made of PE material, and then its internal structure is generally divided into central tube structure and layer stranded structure.

Generally, outdoor fiber is higher than indoor fiber**. Because outdoor optical fiber needs to consider aging resistance, stretch resistance, etc., while indoor optical fiber does not have to consider these aspects.