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Archived — Fiber Optic Cable

Types of Fibers

Glass Fiber Glass fiber is the most common type of fiber available, with companies such as Corning and Siecor producing billions of meters per year. Common industry-standard glass fibers are differentiated by the diameter of the core: larger cores allow more modes to propagate; smaller cores allow fewer. Glass fiber is available in three common sizes: two multimode fibers and one single mode fiber. Multi-mode fibers have larger cores and allow many modes to travel through the fiber. The two standard sizes for multi-mode fiber are 62.5/125 mm, and 50/125 mm. The first number indicates the core diameter and the

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Is multimode fiber a better choice than single mode fiber?

Well, the short answer is YES for premises and local area networks. Single mode and multimode fibers have different network applications, because they have very different optical-performance attributes. In the design of premises and local area networks the decisive factor is the overall cost of all components. The large core of multimode fibers (50um or 62.5um) has distinct advantages: it enables low loss connection and facilitates fiber-to-fiber and fiber-to-transceiver alignment. This makes it best suited to premises and local area network applications. Premises and LAN networks include three major components: fibers, switch equipment and optical transceivers. Since switch equipment are independent of

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