Although it is said that outdoor single-mode butterfly fiber optic cable is widely used for long-distance transmission in integrated wiring, not many people have a deep understanding of its purchase. Today, we will tell you how to choose high-quality optical fiber and cable products from the aspects of the structure, materials, and technology of optical fiber and cable.
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), they 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.
2. Select fiber optic cable according to the number of cores
According to the number of cores of the outdoor single-mode butterfly optical fiber cable, the structure of different types of optical cables can be divided into central bundle type, layered type, skeleton type and ribbon type. Make corresponding requirements according to line conditions. Generally, the central bundled tube type is used for the core below 12 cores. The central bundled tube type has a simple process and low cost, and is competitive in the branch line network with overhead laying or good pipeline protection. The steel wire is reinforced, and the SZ continuous synthetic 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 TV 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.
3. Select fiber optic cable 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 cables require high strength and small temperature difference coefficient; direct buried optical cables require good burial resistance, compression resistance, moisture resistance, humidity resistance, and chemical erosion resistance; pipeline optical cables and submarine optical cables must be resistant to water pressure, tension, and waterproof properties; no The metal optical cable can be erected together with the high-voltage line, and the insulation is better. Although there is no iron reinforced core, it must 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 fiber optic cables is much 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 fiber optic cable, the selection of raw materials, the production process and technical indicators. Consider, we shouldn't just choose products that are too cheap. Because there are many aspects to be considered, not only its service life, but also the standard of the entire engineering performance.
Outdoor fiber optic cable application scenarios
Through today's introduction, I believe that everyone has an understanding of how to buy outdoor single-mode butterfly fiber optic cables. If you want to know more about ZR optical fiber series products, welcome customers to come to consult.
