Understanding Fiber Optic Cable Specifications

Most cable configurations come with various sizes and types of fibers. For example many fibers have a buffer coating of 250 or 950 um diameter. This coating allows fibers of 8/125, 50/125, 62.5/125, or 100/140 um to be used. Each of these fibers can further be offered with various attenuations and bandwidths to satisfy the needs of a particular application. In addition, a cable using a loose-tube buffer can hold one or several fibers. None of these factors significantly influences cable construction. The same construction can accommodate all these differences easily.

As fiber optic technology became widespread, serious dabate evolved over which multimode fiber was best suited to different applications. For example, 62.5/125 and 100/140 um fibers were all proposed for premises wiring and local area networks. The debate centered on the technical and costs merits of each fiber: attenuation, bandwidth, NA, ease and cost of coupling light into the fiber, and so forth.

Multimode fiber is usually 50/125 and 62.5/125 in construction. The “winner” of these debates was the 62.5/125 um fiber, which is the specified or preferred fiber in nearly all applications involving premises wiring, LANs, computer interconnections, and similar uses. 50/125 fiber is making a “comeback” because of its higher bandwidth. Common type of 50/125 fiber optic cable has OM4 fiber optic cable, OM3 fiber optic cable, OM1 and OM2 fiber optic cable. Both OM1 and OM2 multimode cables use the orange color jacket (standard practice for commonly used indoor multimode), OM3 use a special color, which is called Aqua.

Single-mode fibers are still the preferred choice for long-distance, high-speed applications, while both 50/125 and 100/140 um are used in many applications. Here we recommend you singlemode simplex fiber optic cable from Fiberstore, they are designed for production termination where consistency and uniformity are vital for fast and efficient operation.

Fiber optic cables are typically offered with standard-grade and premium-grade fibers. Many application standards specify performace that is met by standard-grade cables. In most cases, the cable performance is a minimum, the cable may exceed the stated performance for a requirement such as bandwidth. For example, most standards call for a 62.5 um cable to have a minimum bandwidth of 160 MHz at 850 nm and 300 MHz at 1300 nm. The standard for FDDI networks call for a 500-MHz bandwidth at 1300 nm. It is possible to buy cable with a bandwidth of 200 MHz at 850 mn and 600 MHz at 1300 nm. Similarly, 50/125 um is available with a standard bandwidth of 500 MHz or an extended bandwidth of 1000 MHz (at both 850 and 1300 nm). The point is that it is possible to buy cabled fiber at different levels of performance for the same type of fiber.

As the best OEM fiber optic cable manufacturer, we provides a fantastic selection of bulk fiber optic cable with detailed specifications displayed for your convenient selecting. Per foot price of each fiber cable is flexible depending on the quantities of your order, making your cost of large order unexpected lower. Buy fiber optic cable from fiberstore, you can custom the cable plant to best fit your needs.