How To Buy Bulk Fiber Optic Cable

Optical Fiber Cable Construction

The structure of bulk fiber optic cables have many important characteristics. The fiber optic cable construction needs to provide protection from the external environment in the installation and the fiber optic cable work life time.

They must provide mechanical protection for all the fibers inside the cable, in the meantime, the fiber optic cable has to be pretty easy to handle. Most the time, non-metallic strength members are needed to fully take advantage of fiber’s dielectric property.

Bulk fiber optic cable will experience tensile stress, abrasion, cutting, flexing, bending, crushing during the installation and its operation life. These mechanical stresses introduce macrobending, microbending, light signal loss attenuation.

Due to incomplete production, small surface defects often exist in the optical fibers. So in the real world, fibers tend to break at the cracks that begin from these surface defects under heavy tensile tension.

Bulk Fiber Optic Cable Structural Elements

Optical cables can be divided into several main types. However, the basic elements in a fiber cables are a central strength member, be it metallic or non-metallic, strength members, water barrier (dry water swelling tapes or water blocking gel), a fiber housing (loose tube), and cable sheaths. Armored fiber cables also have aluminum or steel armors for rodent protection for direct burial.

A central strength member sitting in the center of the cable, fiber glass do most of the time. The center provides rigid cable strength members, prevent bulk fiber cable from bending too fast. It also provides the core of the cable.

In addition to the power of the central member, as another layer of fiber strength member is also used. They are made from aramid yarn (most of the time), Nylon yard, fiber glass epoxy rod or even steel. Aramid yarn is also called Kevlar, it has a high breaking strain and about fiber times stronger than steel. They offer low weight and all-dielectric construction.

Types of Bulk Fiber Optic Cable

Bulk fiber optic cables can be categorized into several major types. That includes outdoor cablefiber optic breakout cable, Ribbon Fiber cable, Figure 8 Aerial cable, Loose tube cable and more.

To learn more about the type of fiber cable available on the market, or want to purchase our cable, please visit our website. As one of the best OEM fiber optic cable manufacturers, FiberStore provides a wide range of quality optical fiber cables with detailed specifications displayed for your convenient selecting. Per meter price of each fiber cable is flexible depending on the quantities of your order, making your cost of large order unexpected lower. Customers can also have the flexibility to custom the cable plant to best fit their needs. Only fiber cable that meets or exceeds industry standards is used to ensure quality products with best-in-class performance.

The Different Types of Optical Fiber Cable?

There are many types of fiber optic cable used to supply data to mobile phones, computers and TVs, each handling light in a different way, and each made for a different application. There are two main types of optical fiber cable, multimode and single mode, which use either several beams of light or a single beam at once. Simplex cables use only one or two optical fibers and Kevlar protection. Tightpack cables contain many optical fibers, but the fibers are not individually terminated. Loose tube cables include a water blocking gel and are used outdoor or are buried underground.

Multimode and single mode are the two main types of optical fiber cable, though the terms do not refer so much to the cable design as to how the fibers interact with light. The multimode version sends out many different light beams at once, and each is sent at a different angle so the beams cannot interact with each other, eliminating the chance of interference. These types of optical fiber cable can only be used for short distances; otherwise, the light beams begin to interfere with on another. Single mode optical fibers send only one beam of light at a time, making them ideal for long distances, because there are not multiple light beams to cause interference.

While a multi-mode optical fiber is cheaper than a single-mode fiber, it is only effective at supplying power to short distances, around 1,968 feet (600 meters). This is because of the different light rays working at once. If the cable is used for longer distances, the light rays begin either to conflict or disperse, meaning that power is inefficiently transferred or will not reach the target destination.

Simplex cables are simplx fiber optic cables that are used for backplanes and patch cord purposes. The outside is reinforced with Kevlar to keep the optical fibers from wearing down as a result of outside stress. Inside, there are only one or two fibers, which make it good for applications for which limited energy is needed.

Tightpack cables are similar to simplex but include many more fibers. The fibers are paired up and jacketed, as with the simplex cables, but there are many pairs, not just one. A major difference, aside from fiber number, is that the fibers are not individually terminated or protected, so there must be a termination unit connected to these types of optical fiber cable. These cables are used mostly for dry conduit runs over short distances.

Loose-tube cable does not use protection or jacketing for their internal fibers, but have another way of keeping the fibers safe. The insulation is filled with a water-blocking gel that is able to keep water from leaking into the cable and also keeps the fibers safe by adding durability to the inside of the cable. These cables are often used outdoor, either in the air or buried underground.

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What is Outdoor Fiber Optic Cable

Outdoor fiber optic cable, simply used for outdoor fiber optic cable, belong to a kind of optical fiber cable, for the most suitable to use in outdoor so called outdoor fiber optic cable, it is durable, can withstand the freezing of weathering, the outer packing, which have some such as pressure, corrosion resistance, tensile mechanical properties, environmental characteristics.

Outdoor cable tensile strength is larger, protective layer is thick, and usually for armored (i.e. metal leather wrapped). Outdoor cables is mainly applied to buildings, and between the interconnection between remote networks.

Generally speaking, outdoor cable just filler, reinforcing member, jacket and so on use of different materials. Such as: outdoor fiber optic cable buried, should use armored cable. Aerial, with two or more optional root reinforcement of black plastic optical fiber cable outer sheath.

Outdoor cable because of its use of the environment is outdoors, it must have a waterproof function, generally used by the outer sheath is made of PE material, and its internal structure is generally divided into the central tube structure and layer twisted structure.

Outdoor fiber optic cable is a complete optical signal transmission lines of communication. By a number of fiber optic cable core composition in accordance with a certain way, outsourcing jacket, and some also cover the outer sheath.
Outdoor fiber optic cable consists of an optical fiber (glass as thin as a hair) and plastic casing and plastic sheath constituted maintenance, fiber optic cable is not gold, silver, copper and aluminum and other metals.

Outdoor optical cable laying

Communication cable since 70s application, has now developed into a long haul, local telephone relay, underwater and undersea communications and local area networks, private networks and other cable transmission backbone, and has begun to develop the access network to the user by the fiber to curb (FTTC), fiber to the building (FTTB) and so on to the fiber to the home (FTTH) development. For a variety of applications and environmental conditions, communications cable with aerial, buried fiber optic cable, pipelines, underwater, indoor installation, etc.

Aerial optical cable

Aerial cable is hung on pole using optical fiber cable. This way of laying can take advantage of the existing aerial light road, save construction costs and shorten the construction period. Aerial cables hanging in the pole, must adapt to a variety of natural environments. Aerial cables susceptible to typhoons, ice, floods and other natural disasters, the threat also vulnerable to outside influence and weaken their mechanical strength and other effects, so the failure rate is higher than the aerial cable and pipeline buried fiber optic cable. Generally used for long-distance two or level 2 of the line, cable lines for private networks or some local special location.

Direct Burial Fiber Cable

The cable outside a strip or wire armored, direct burial in the ground, requiring performance against external mechanical damage and prevent soil erosion performance. According to the different use of the environment and conditions for use of different sheath structure, for example, there are areas of Pest Insects and Rodents, to use a pest control rat gnawing of the cable sheath. According to the soil and the environment, the depth of buried fiber optic cable is generally between 0.8m to 1.2m. In laying, you must also pay attention to maintaining fiber strain within the limits allowed.

Duct Optical Cable

Pipe laying is usually in urban areas, pipe laying environment better, so the cable sheath are no special requirements, no armor.

Pipe laying laying before the next election and the length of the segment connecting point. Laying beside cited can use mechanical or manual traction. Do not exceed a towing cable to allow traction tension. Pipe materials can be produced based on the geographical choice of concrete, asbestos cement, steel, plastic tubes.

Underwater Fiber Optic Cable

Underwater fiber optic cable through the radiation in the bottom of rivers, lakes and the riverbank, etc. The fiber optic cable, fiber optic cable laying environment than this pipe laying, burying the condition much worse. Underwater fiber optic cable must be used wire or steel armored structure, retaining layer structure according to the hydrogeological conditions of rivers into account. For example, in stony soil, erosion and strong seasonal riverbed, cable suffer from wear and tear, Rally situation, do not only need thick steel wire armored, to use its double-armored construction methods should be based on river width, water depth, flow rate, etc. for the selected drawing riverbed. Laying underwater fiber optic cable buried fiber optic cable severe conditions than many, techniques and measures to repair the failure is also much more difficult, so the reliability requirements of underwater fiber optic cable buried fiber optic cable than high.

Submarine cable is underwater cable, but the laying of underwater cables environmental conditions more severe than normal, demanding the submarine cable system and its original life requirements in more than 25 years.