Single-mode Fiber vs multi-mode Fiber

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Fiber Cable can be divided into 2 modes namely Single-mode and multi-mode.

Multi-mode cable has a larger core diameter (50um or 62.5um) than single-mode fiber (9um core diameter). Single Mode Fiber has a relatively narrow diameter and more bandwidth carrying capacity. Single-mode fiber gives you a higher transmission rate and up to 50 times more distance than multimode, but it also costs more. When light travels down multi-mode fiber it is reflected at different angles as it propagates down the transmission path. These multiple reflections cause the light to spread out in time as it propagates down the fiber, making it more difficult for the receiver to recover the data. Single-mode fiber being much narrower, confines the optical signal to a straighter path with fewer reflections. As a result, optical signal dispersion is significantly reduced, which translates into a leaner signal. Longer transmission lengths can therefore be achieved with single mode cable. Singlemode Fiber are the best choice for transmitting data over long distances. Singlemode fiber systems cost more to make and are more “fragile” in nature, which makes them more expensive for you to purchase.

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