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Do Signals Really Travel Faster In Fiber Optics? |
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Answer» You know that "sending communications at the speed of light" means the speed of light in GLASS (about 2/3 C), but you might be surprised to know that signals in UTP (UNSHIELDED twisted pair) cables like Cat 5E travel at about the same speed (2/3 C). Coax, meanwhile, has a FASTER NVP (nominal velocity of propagation), about 0.9C, due to it's design. Fibers "speed" is not referring to the speed of the signal in the fiber, but the bandwidth potential of the fiber. You know that "sending communications at the speed of light" means the speed of light in glass (about 2/3 C), but you might be surprised to know that signals in UTP (unshielded twisted pair) cables like Cat 5e travel at about the same speed (2/3 C). Coax, meanwhile, has a faster NVP (nominal velocity of propagation), about 0.9C, due to it's design. Fibers "speed" is not referring to the speed of the signal in the fiber, but the bandwidth potential of the fiber. |
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