How to choose high-quality fiber optic cable products
As we all know, the quality of the transmission medium in the integrated wiring is very important to the whole project. Among them, not only the service life of the integrated wiring project, but also the guarantee of its quality and performance. People are often keen to use optical fiber as a long-distance transmission medium because optical fiber has the advantages of strong anti-electromagnetic interference, reduced signal attenuation, large capacity, light weight, small size, and long transmission distance.
Although it is said that optical fiber is widely used for long-distance transmission in integrated wiring, not many people have a deep understanding of its purchase. Today, we will explain to you how to choose high-quality optical fiber products from the aspects of the structure, material and process of optical fiber.
ZR Cable fiber optic cable
Skill 1. Select the fiber optic cable according to the material
The material used in the optical cable and the production process The selection of the optical cable material is the key to the service life of the optical cable. The manufacturing process is an important link that affects the quality of optical cables. Products with stable processes and good quality are basically not included in the additional loss of optical fibers in the entire process of optical cable production. ≤ 0.01dB/km is the basic data to measure the manufacturing process level of the manufacturer's optical cable.
The main materials of optical cable are: fiber core, optical fiber ointment, sheath material, PBT (polybutylene terephthalate), which all have different quality requirements, and the fiber core requires a large power charging capacity. Higher signal-to-noise ratio, lower bit error rate, longer amplifier spacing, higher information carrying capacity; optical fiber ointment refers to the ointment filled in the optical fiber bundle, its function is to prevent moisture in the air Erosion of the optical fiber, the second is to act as a cushion for the optical fiber, and the buffered optical fiber is affected by vibration or shock.
Skill 2. Select the fiber optic cable according to the number of cores
According to the number of cores, the structure of different types of optical cables can be divided into central bundle type, layered type, skeleton type and ribbon type. Generally, the central bundled tube type is used for the cores below 12. The central bundled tube type has a simple process and low cost, and is competitive in the overhead laying or branch and trunk line networks with good pipeline protection;
The layer-stranded optical cable is reinforced by the centrally placed steel strand or a single steel wire, and the SZ continuation cable is used, and the number of fibers into the cable can reach 144 cores. Its biggest advantage is waterproof, strong pull resistance, strong side pressure. Can be used for direct burial. At the same time, it is easy to split, that is, when part of the optical fiber of the optical cable needs to be used separately, it is not necessary to disconnect the entire optical fiber cable, but only the optical fiber to be branched can be disconnected, which is very important for the data communication network.
It is advantageous to add optical nodes along the cable television network; the number of cores of the ribbon optical cable can reach thousands of cores. It arranges 4 to 12 core optical fibers in a row to form a ribbon optical fiber unit, and then multiple ribbon units are arranged according to a certain amount. The method is arranged into cables. Our network-level optical cables generally use two types: bundled and continuous.
Skill 3. Select the optical fiber according to the application
According to different uses, the corresponding optical cable can be divided into overhead optical cable, direct buried optical cable, pipeline optical cable, submarine optical cable and metal-free optical cable. Aerial optical cable requires high strength and small temperature difference coefficient;
Direct buried optical cables require good burial resistance, compression resistance, moisture resistance, humidity resistance, and chemical resistance; pipeline optical cables and submarine optical cables must be resistant to water pressure, tension, and waterproof properties;
Metal-free optical cables can be erected together with high-voltage lines, and the insulation is better. Although there is no iron reinforced core, they must also have a certain tensile capacity. Therefore, when purchasing an optical cable, users should choose according to the purpose of the optical cable, and put forward requirements to the manufacturer to ensure that the optical cable is stable and reliable.
To sum up, the purchase of optical fiber cables is far more complicated than coaxial cables. It cannot be simply measured by the price of several cores, but should be integrated according to the structure of the optical cable, the selection of raw materials, the production process and technical indicators. Consider, we shouldn't just choose products that are too cheap. Because I want to consider many aspects, not only its service life, but also the standard of the entire engineering performance.