If you’ve worked with fiber
optics, you know that optical fiber is resistant to noise and outside
interference- unlike copper. Thus, we only have one concern when dealing with fiber optic cable: keeping the signal strength strong. Since we
don’t have to
worry about interference, we can cable fiber optic media
much farther than twisted-pair cable.
We noted earlier that computers communicate with high values and low
values. However, it would be more accurate to claim that they instead
communicate via “on” and “off” indications. Fiber optic media uses light
to signal this on or off state.
You’ll generally want to use fiber optic cable when copper media
proves to be too limited for long distances, or noisy environments. It
may cost a little more, but the speed and efficiency fiber optic cable
provides is well worth it. And in longer cable runs, fiber optic cable
will actually cost less than copper media.
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