GYTA53 Optical Fiber Cable For Direct Burial And Duct Installations

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GYTA53 Optical Fiber Cable For Direct Burial And Duct Installations

GYTA53 Optical Fiber Cable Is A Steel Tape Armored Optical Cable For Direct Burial And Duct Installations. It Can Resist External Mechanical Damage And Offers Good Crush Resistance And Rodent Resistance.

This outdoor cable is designed with 250um optical fibers held in gel-filled PBT loose tubes and wrapped around a phosphatized steel wire central strength member. It features a full-cross-section water blocking structure and a waterproof compound.

Water-Blocking Structure

GYTA53 fiber optic cable has a structure in which 250um optical fibers are held in gel-filled PBT loose tubes, and the whole sheath is filled with a waterproof compound. It also has a phosphatized steel wire central strength member and a plastic-coated aluminum tape (APL) or a polyethylene inner sheath longitudinally wrapped around it. In addition, the gaps in the cable core are filled with water blocking fillers.

This water-blocking structure prevents longitudinal moisture migration inside the fiber optic cable, which can cause serious damage and even system outage to a network. This is particularly important for direct burial cables that are installed in environments with significant changes in soil temperature or high levels of moisture.

In order to ensure that the water-blocking structure works properly, it is essential to use a water-blocking powder that is compatible with the polarity of the moisture molecules. Moreover, the water-blocking powder should be capable of rapidly gyta53-fiber-optic-cable-direct-buried absorbing moisture, which can be achieved by adding a surfactant to it.

Besides being an effective water-blocking solution, the dry water-blocking method is also easy to use and will not interfere with the operation of a fiber optic cable. Additionally, it can help protect the cable from mechanical stress during installation and burial. This type of protection is especially important for outdoor-rated cable that will be exposed to the elements, and can help reduce maintenance and repair costs.

Loose Tube Filling Compound

The GYTA53 loose tube fiber cable provides the same optical performance of a flooded cable, but without the water ingress that causes failure. Its design allows it to be used in outdoor duct and direct burial applications where water penetration is a concern. Unlike tight buffered cables, loose tube cable offers good secondary excess fiber length, which protects the optical fibers from stresses caused during installation and environmental loading.

The cable consists of a series of color-coded plastic buffer tubes filled with a gel filling compound that impedes water penetration. These tubes are stranded around an aluminum polyethylene laminate (APL) and filled with fillers to create a circular core. This core is surrounded by aramid yarn and then covered with a protective outer sheath.

A grease like hydrocarbon fluid flows through a passageway between two adjacent concentrically disposed tubes of the loose tube element, and forms a jelly-like hydrocarbon substance that impedes water penetration. The jelly-like hydrocarbon substance is injected from one end of the cable to the other via a plastic extrusion crosshead with an inlet port and an exit port (die) between which there is a passageway for flow of the grease like hydrocarbon fluid.

A metal strength member, usually sheathed with aramid yarn, locates in the center of the core. The stranded loose tube and filler containing singlemode or multimode fibers are then encapsulated in the APL which is then covered with a PE inner sheath and PSP longitudinally applied over the inner sheath, and completed with a sheath.

Corrugated Steel Tape Armor

CSTA cables are often deployed in challenging environments that expose them to external environmental factors, such as harsh temperatures and moisture. Their steel armor provides robust protection against physical damage, making them a popular choice in outdoor installations. It is important to follow proper preparation procedures when installing CSTA cables, however, as failure to do so may result in damage to the fibers inside. It is also essential to use specialized tools, such as armor slitting tools, to make the process of preparing the cable for installation more efficient and effective.

GYTA53 fiber optic cable is designed for direct burial and outdoor applications, such as long-distance communication, local trunk lines, and CATV (Cable Television). It features a corrugated steel tape armor for enhanced mechanical protection against rodent bites and moisture. It has a loose tube design and is suitable for both duct and direct buried installation.

The cable core is made up of single-mode or multi-mode optical fibers positioned in a loose tube and filled with water blocking filling compound. A metal strength member, sometimes sheathed with PE for cable with high fiber count, is stranded around the tubes and fillers to form a compact and circular cable core. An internal Aluminum Polyethylene Laminate (APL) moisture barrier is then applied to the core, followed by a thin PE inner sheath and a double-jacket structure.

Double Sheath

GYTA53 is a durable type of fiber optic cable that is suitable for direct burial applications. It is also suitable for duct installation, and its robust design provides excellent performance in harsh environments. This armored outdoor fiber optic cable is ideal for long-distance communication, local trunk lines, CATV, and computer network systems. This cable is manufactured from high-quality raw materials and features an internal PE sheath that ensures longitudinal moisture protection.

Single-mode and multi-mode optical fibers are positioned in loose tubes made of a thermoplastic material, which is filled with tube filling compound. The tubes are stranded around a central metallic strength member to form a compact and circular cable core. A mpo-harness-cables layer of Aluminum Polyethylene Laminate (APL) is applied around the core and then completed with a PE sheath.

This duct and direct-buried fiber optic cable is made from quality raw materials, which ensures high transmission efficiency and low transmission attenuation. The double sheath structure offers good water resistance and crush resistance performance, which is suited for harsh environments. It is also resistant to rodent bite, making it ideal for duct and direct buried applications. The compact structure and precise control of fiber excess length render this cable excellent mechanical and environmental properties. It is the best choice for a variety of communication needs in harsh environments.

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