Armored Fiber Optic Cable in Indoor & Outdoor Types

What is Armored fiber optic cable?

Armored fiber optic cable is designed to protect the cables from being eaten by rats and dampened by moisture. When working in severe environments, it can make sure your cables avoid outside damage

Inside the Armored Fiber Optic Cable
The internal structure of armored fiber optic cable consists of an outer jacket provides protection against rodent, abrasion and twist,  kevlar, steel, and aluminum foils which it is helpful to reduce loss during installation.

The Main Role of Armored Fiber Optic Cable
Armored optical fiber is mainly used in direct buried outside plant in case of resist rodent and withstand hazardous environments. And you can also use them in data center for ordinary network systems. It usually connected fiber optic equipment in armored fiber optic patch cable type, which you can have strong tensile resistance and not being eaten by rats in the application.

What is the Difference from Armored and Unarmored Cable?

When it comes to armored fiber optic cable, An armored fiber optic cable has different styles of protection. such as metal part, fiber yarn, glass yarn, polyethylene etc. what’s difference is armored fiber optic cable and the unarmored cable? The armored fiber optic cable has an additional outer protective layer. See the images of Armored and Unarmored Fiber Optic Cable

Different Types of Armored Fiber Optic Cable
In different application, We can categorize armored cable into indoor armored cable and outdoor armored cable.

Indoor Armored Cable:
The indoor armored optical cable is divided into single-armored cable and double armored cable. Single-armored fiber refers to optical cable that without stainless woven wire, while the double armored cable means optical cable that is equipped with both stainless steel hose and stainless woven wire. The inner structure of a single-core indoor armored cable can be seen as follow: Tight fiber+ kevlar (for the purpose of tensile resistance) + stainless steel hose (for compression, bending and rodent resistance ) + stainless steel woven wire (for torsion resistance) + outer sheath (usually made from fire-retardant PVC, and LSZH, Teflon, silicone tube, etc according to different functions).
single-core indoor armored cable
Advantages: high tensile resistance, high compressive strength and rodent resistance; able to handle the damage from improper torsion and bending; simple construction and operation, low maintenance cost; adaptable to harsh environments and artificial damage.
Disadvantages: a heavier weight and higher price than common fiber optic cable.

Outdoor Armored Cable:
The outdoor armored optical cable is divided into light armored and heavy armored cable. Light armored cable comes with steel strip and aluminum, which functions to strengthen the cable and prevent it from being bitten by rodent animals. Heavy armored cable is wrapped in a circle of steel wire, which is often deployed in riverbed and seafloor. Generally speaking, light armored cable with steel strip is recommended for its cheaper price and durable quality.
According to the material of metal armor, armored fiber optic cable can also be divided into steel armored cable and aluminum armored cable. They are bolt-shaped and surrounded by a circle of mental armor to protect the fiber core. With the advantages of natural torsion, high-pressure resistance, and good tensile strength, the armored cable can provide excellent protection for optical cables.

Summary
Armored optical fiber can be regarded as a kind of strengthened cable, which is harder and stronger than standard optical cable. For aerial fiber optic cable, it often happens the occasion that people may hit the optical cables by mistake when shooting birds. For cases like this, armored fiber optic cables are usually adopted to protect the fiber core. With an unparalleled protection against physical damage without sacrificing flexibility or functionality within fiber networks, armored optical cable is a perfect addition to any fiber network in hazardous environments.

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