Aluminum tube optical cables are designed to protect optical fibers within a hermetically sealed aluminum tube, offering corrosion resistance, mechanical strength, and reliable performance for aerial and indoor/outdoor applications.

Structure and Materials

Aluminum tube optical cables typically consist of optical fibers placed loosely in plastic or water-blocking gel-filled tubes, which are then embedded in a hermetically sealed aluminum tube. This central tube is surrounded by single or double layers of aluminum-clad steel (ACS) wires, aluminum alloy wires, or steel wires, providing both mechanical strength and electrical conductivity when used in OPGW applications . The uniform material and structure ensure resistance to vibration fatigue, short-circuit currents, and lightning strikes .

Performance Characteristics

• Corrosion Resistance: The aluminum tube and surrounding metallic layers provide excellent protection against corrosion, suitable for harsh environments .
• Mechanical Strength: Designed to withstand wind, ice, and other environmental stresses, the cables maintain fiber integrity and low attenuation .
• Fiber Protection: Hermetically sealed tubes and water-blocking gels prevent moisture ingress, ensuring stable optical performance .
• Standards Compliance: These cables meet international standards such as IEC 60794, IEEE 1138, and can be customized to meet NBR, BS, or other regional standards .

Applications

• OPGW (Optical Ground Wire): Aluminum tube cables are widely used in overhead power transmission lines, combining the functions of grounding and optical communication .
• Indoor/Outdoor Fiber Optic Cables: Aluminum interlocking armor or aluminum tubes provide mechanical protection for high-density fiber installations in buildings or riser applications .
• High Fiber Count Networks: Cables can support up to 192 fibers with uniform excess length and low additional attenuation, suitable for large-scale telecommunications networks .

Advantages

• Dual-function capability for telecommunications and power line protection.
• Stable optical performance under short-circuit currents and environmental stress.
• Long service life due to corrosion resistance and mechanical durability.
• Flexible design options for single or multi-loose tube configurations, accommodating different fiber counts and installation requirements . Aluminum tube optical cables are therefore ideal for applications requiring robust fiber protection, environmental resilience, and integration with power infrastructure, making them a preferred choice for both utility and high-density communication networks.