Multimode non-metallic reinforced optical cable with protective layer

These cables are all-dielectric, multimode fiber optic cables reinforced with non-metallic materials like aramid or glass yarn, featuring protective outer sheaths for mechanical, environmental, and electrical safety.

Cable Structure and Reinforcement

Multimode non-metallic optical cables typically use a loose tube design where multiple fibers (OM1, OM3, OM4) are housed in gel-filled or water-blocked tubes to prevent moisture ingress and maintain stable transmission performance. The central strength member is often made of Fiber Reinforced Plastic (FRP), providing axial load support without introducing electrical conductivity. Surrounding the core, aramid yarn or glass yarn layers act as reinforcement, offering tensile strength, crush resistance, and rodent protection while keeping the cable lightweight.

Protective Layers

The cable is completed with inner and outer polyethylene (PE) or LSZH (Low Smoke Zero Halogen) sheaths, which provide UV resistance, flame retardancy, and environmental protection for outdoor or industrial installations. Some designs include water-blocking compounds or tapes to prevent moisture penetration, ensuring reliable performance in humid or submerged conditions. Ripcords may be included for easy sheath removal during installation.

Applications

These cables are ideal for aerial, duct, and conduit installations, especially in areas with high electrical hazards, lightning risk, or electromagnetic interference, as the all-dielectric design prevents electrical conduction. They are suitable for power transmission corridors, substations, chemical plants, and high-voltage zones, as well as railway and highway communication systems. The lightweight, flexible design simplifies handling and installation compared to metallic armored cables.

Standards and PerformanceNon-metallic reinforced multimode cables comply with IEC 60794, ITU-T G. 652/G. 657, EN 50173, and other relevant standards, ensuring global compatibility and reliable optical performance.

They support high-speed data transmission, low attenuation, and extended service life, making them suitable for modern telecommunication, industrial, and infrastructure networks.

Summary

In essence, multimode non-metallic reinforced optical cables with protective layers combine: Non-metallic reinforcement (aramid or glass yarn, FRP central member)Protective sheaths (PE or LSZH, UV and flame resistant)Water-blocking and gel-filled tubes for moisture protectionAll-dielectric design for electrical safety These features make them highly durable, lightweight, and safe for demanding outdoor and high-voltage environments while maintaining excellent optical performance.