How does non-metallic stranded outdoor optical cable improve the protection performance of optical fiber through high modulus materials?
Publish Time: 2025-06-19
In the construction of modern communication networks, optical fiber is the core carrier of information transmission, and its safety and stability are crucial. Especially in complex outdoor environments, optical cables must not only withstand temperature changes and humidity invasion, but also cope with the challenges brought by mechanical stress and external pressure. Non-metallic stranded outdoor optical cable (such as GYFTY structure) uses high modulus materials to manufacture loose tubes, which shows excellent advantages in improving the protection performance of optical fiber and provides a stable and reliable "living environment" for optical fiber.First of all, high modulus materials have excellent compression and deformation resistance, which is one of the key factors in protecting optical fiber from external physical damage. Optical fiber itself is an extremely precise and fragile transmission medium. Slight bending or squeezing may cause signal attenuation or even breakage. The loose tube made of high modulus material can effectively resist external pressure and prevent micro-bending or macro-bending of optical fiber caused by external force. This material not only has good rigidity, but also maintains a certain flexibility, so that it will not break easily when impacted, thus establishing a solid barrier for the internal optical fiber.Secondly, the loose tube is filled with waterproof compounds, which further enhances the adaptability of optical fiber in harsh environments. High modulus materials have good sealing properties. When combined with waterproof compounds, they can effectively isolate moisture and prevent hydrogen loss of optical fiber due to moisture, which in turn affects signal quality. Whether in the humid and rainy southern region or in the pipeline laying environment with a high groundwater level, this structure can ensure that the optical fiber is in a dry and stable operating state for a long time, extend its service life, and improve the reliability of the overall system.In addition, high modulus materials also give loose tubes excellent thermal stability. In outdoor environments, the temperature difference between day and night is large and direct sunlight is strong, which can easily cause material aging and structural deformation. High modulus materials can maintain the stability of their physical properties over a wide temperature range and are not easily deformed or cracked due to thermal expansion and contraction. This not only reduces the maintenance frequency caused by environmental changes, but also avoids the problem of uneven force on optical fiber caused by material shrinkage, reducing potential transmission risks from the root.The overall structural design of the GYFTY optical cable also fully reflects the emphasis on optical fiber protection. The center of the optical cable uses glass fiber reinforced plastic (FRP) as a reinforcing core, which provides sufficient tensile strength, so that the entire optical cable is not easily stretched or damaged during the wiring process. The loose tube is twisted around the central reinforcing core and filled with water-blocking material to form a tight and uniform cable core structure. This layout not only improves the compressive strength of the optical cable, but also optimizes the space utilization, making the entire optical cable more compact and easy to install, while reducing the internal stress concentration problem caused by the loose cable core.It is worth mentioning that the choice of non-metallic materials also brings stronger corrosion resistance and adaptability to the optical cable. Compared with traditional optical cables containing metal components, GYFTY optical cables do not contain metal materials, so they will not rust due to oxidation or electrochemical reactions. This feature is particularly suitable for scenarios where it is used in high humidity, salt spray or acid-base environments, such as coastal areas, chemical plant areas, etc. At the same time, because it does not contain metal, this type of optical cable also has natural lightning protection performance, which is suitable for areas with severe high-voltage electromagnetic interference, such as power line corridors, substations, etc., further expanding its application range.In the actual construction and operation and maintenance process, the application of high modulus materials also improves the operability and maintenance convenience of optical cables. Since the loose tube structure is stable and the optical fiber is in a free state, optical fiber detection and repair work can be easily carried out even after long-term use. At the same time, the addition of the polyethylene outer sheath not only enhances the wear resistance and UV resistance of the optical cable, but also improves its overall flexibility and durability, making it easier to lay in various terrain conditions, whether it is overhead, buried or through pipe wiring, it can show good adaptability.In summary, non-metallic stranded outdoor optical cable improves the protection performance of optical fiber from multiple levels by using high modulus materials to manufacture loose tubes. It not only effectively resists the influence of external physical pressure and environmental changes, but also shows significant advantages in waterproofing, moisture resistance, and anti-aging. This structural design combined with the advantages of non-metallic materials enables optical cables to maintain stable and efficient signal transmission capabilities in complex outdoor environments, becoming an indispensable and important part of modern communication infrastructure. With the development of 5G networks, smart cities and industrial Internet, this type of high-performance optical cable will play an increasingly important role in the future information society, providing solid support for building high-speed, secure and stable communication networks.
