Types of fiber optic cables

Types of Tight Structure Cables

There are two basic types of cables which are often defined as tight build and loose build. Tight-fitted cables (simplex, duplex zipcord , distribution, and breakout ) are used in inside-plant installations where cable flexibility and ease of termination are important, even more so than ruggedness and strength. to the traction force that characterize loose structure cables and ribbon type cables ( ribbon). In general, tight-fitting cables are used indoors and loose-fitting cables or ribbon cables are used outdoors .

 These types of cables are most often used when installing a patch cord or backplane;

However, the duplex cable ( zip cord) can also be used on desktop connections. Simplex cables are composed of a single, tight-knit fiber (with a 900-micron tight-knit buffer coating on top of the primary buffer coating), with Kevlar (agamid fiber) reinforcement elements and a jacket. for indoor use. The jacket usually has a diameter of 3 mm. Duplex cable ( zip cord ) is simply made up of two such cables joined by a thin web.

 Distribution cable is the most popular indoor installation

Cable as it is small in size and also light in weight. It contains several fibers with a tight structure grouped in the same jacket with Kevlar reinforcement elements and, in some cases, a fiberglass reinforcement rod to tension the cable and prevent it from twisting. These cables are small in size and are used for short runs through underground conduit in areas free of water, and in riser or plenum applications. The fibers are double buffered, and can be terminated directly. However, since the fibers are not individually reinforced, these cables must be routed through a “distribution box”, or terminated within a patch panel or junction box to protect each fiber.

 Breakout cable is the favorite when it comes to using rugged

Cables or when direct terminations are needed without junction boxes, patch panels, or other hardware. They are made up of several simplex cables grouped in the same jacket. This is a strong and sturdy design cable, but it is longer and more expensive than distribution cable. It is suitable for laying cables through underground conduits and in vertical or “riser” cable installations.” And “plenum” applications.

It is perfect for industrial installations where strong cables are needed.

Because Fiber optic cable is individually reinforced, this design allows for quick termination of connectors and no junction boxes or panels are needed. Breakout cable can be cheaper when the number of fibers per cable is not as large and the distances are not as long, since it takes much less time to terminate. Loose Structure Cables are most commonly used in outside plant links as they offer the best protection for the fibers under high tensile stress conditions and are easy to protect from moisture with gel or water blocking tape.

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