If it is divided according to the purpose, then these optical cables will be classified into a completely different pattern from the above-aerial optical cable, direct buried optical cable, pipeline optical cable, submarine optical cable and metal-free optical cable, etc. And their cable characteristics are also very different. For example, the aerial optical cable has high strength and small temperature difference coefficient. The direct-buried type does not have any protection in direct contact with the ground, so it must have strong compression resistance and moisture-proof and moisture-proof capabilities, as well as strong corrosion resistance. For pipelines and submarine optical cables, because they are all under the water under high pressure environment, the most important thing is undoubtedly the water pressure resistance and tension resistance of the optical cable.

The last type is metal-free optical cable. This type of optical cable can be used with the framework of high-voltage lines, so the requirements for resistance to external forces are the least, so it will be more convenient in construction. However, although this type of optical cable does not have an iron core in the core, it also has considerable requirements for compression resistance.

For the service life of optical fiber, it is closely related to the construction medium of the line. At present, the main materials of optical fiber are fiber core, optical fiber ointment, PBT and sheath materials, etc. First of all, the fiber core can guarantee a high signal-to-noise ratio, a low bit error rate and a long-distance amplifier spacing during transmission, so it can be said to be a good choice for ensuring transmission quality. The fiber optic ointment acts as a drying agent and a liner, which not only protects the circuit from moisture corrosion, but also prevents the impact of vibration on the circuit.

For the application of underwater optical fibers, PBT materials with strong hydrolysis resistance must be used. Since the underwater optical fiber faces the threat of deep water pressure and underwater corrosion, PBT can make the fiber bundle tube have good pressure resistance and temperature adaptability, so it can ensure the continuous life of the equipment

is not shortened under high pressure. The sheath material plays a very important role in the long-term reliability of the optical cable. It determines the tensile, bending, temperature adaptation, and natural aging resistance characteristics of the optical cable, and is also the key to the fatigue resistance of the optical fiber.

The above is how to choose optical fiber and cable according to the needs and characteristics. The choice of optical cable must be cautious. After all, it is the basis of all aspects of optical communication. Guangzhou Huipeng has been focusing on the research and development and sales of optical communication products for 15 years, except for optical fiber transceivers. , network cables, and Huixun optical cables are also well received at home and abroad, with high cost performance.