The fibers,250μmm,are position in a loose tube made of a high modulus plastic.The tube are filled with a water resistant filling compound.A steel wire,sometimes sheathed with ployethylene(PE) for cable with high fiber count,locates in the center of core as a metallic strength member.
Tubes (and fillers) are stranded around the strength member into a compact and circular cable core.An Aluminum Polyethylene Laminate(APL) is applied around the cable core,which is filled with filling compound to protect it from water ingress,the cable is completed with a PE sheath.
Aluminum tape armored fiber optic cable is a type of fiber optic cable that incorporates one or more layers of aluminum-plastic composite tape as an armor layer within the standard cable structure. This design aims to provide superior mechanical protection and moisture barrier, making it ideal for harsh outdoor environments and direct burial applications. Its reliable performance ensures long-term stable operation of long-haul trunk lines, metropolitan area networks, and access network infrastructure in complex underground environments. When selecting, the most suitable structural type should be determined based on the specific installation environment, fiber count requirements, and mechanical strength requirements.
Features:
Excellent moisture and water ingress protection:
The aluminum tape provides a full-section, continuous airtight and watertight barrier, effectively preventing radial (lateral) penetration of water vapor and liquid water. This is one of its main advantages compared to non-armored fiber optic cables.
Mechanical protection:
Resistance to lateral pressure: The robust aluminum tape can withstand static loads such as soil pressure and rock compression.
Impact and damage resistance:
Provides a certain degree of protection against accidental excavation impacts from excavators, shovels, etc.
Rodent protection:
The hard metal layer effectively prevents gnawing by animals such as rats, squirrels, and termites, which is crucial for direct burial and conduit laying.
Lightweight:
Compared to traditional all-steel wire armor (SWA), aluminum tape armor is lighter, easier to handle and lay, while still providing excellent protection.
Relatively good flexibility:
Easier to bend than steel tape armored fiber optic cables, facilitating pulling and coiling in conduits.
Certain electromagnetic shielding:
The continuous aluminum layer can act as an electromagnetic interference (EMI) shield, protecting internal fiber optic signals from interference from nearby power lines or electrical equipment.
Application
* Direct burial: Laid in underground pipes, trenches, or directly buried in the soil; this is its main application scenario.
* Pipe laying: Provides extra protection in crowded pipes or pipes where water accumulation may occur.
* Aerial installation (requires additional suspension wire): Used in areas requiring protection against rodents, or in harsh environments for overhead lines.
* Humid environments: Such as tunnels, bridges, and areas near rivers and lakes.
* Inter-office relay and access network trunk lines: Network segments requiring high reliability and durability.
Other Armored Fiber Optic Cable
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