# Cabling Part 2: Fiber-Optic Cabling and Components, 5th by Bill Woodward

By Bill Woodward

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In fiberoptic transmission, digital signals make it possible to carry many thousands of conversations over a single fiber through the use of multiplexing, which will be explained later in this chapter. Analog to Digital (A/D) Conversion To transmit an analog signal such as a voice through a digital system, it is necessary to digitize, or encode, it. This is also known as analog to digital, or A/D, conversion. In A/D conversion, the smooth, continuously variable analog signal is translated into a digital signal that carries the same information.

As you friend aims the laser pointer at an angle toward the surface of the water, the light does not exit; instead it bounces off the surface of the water at an angle. Why did this happen? Detect crosstalk between multiple optical fibers. Crosstalk or optical coupling is the result of light leaking out of one fiber into another fiber. Master It You have bundled six flexible clear plastic strands together in an effort to make a fiber-optic scope that will allow you to look into the defroster vent in your car in hope of locating your missing Bluetooth headset.

Fiber optics is the backbone of the global telecommunications system. No other transmission medium can move the high rates of data over the long distances required to support the global telecommunications system. This technology works so well that the typical user may not be aware that it even exists. 1 are everywhere. From a distance, you can see the antennas at the top of the tower. As you get closer to the tower, you can see the copper cables running up the tower to the antennas. However, what you do not see are the optical fibers typically buried underground moving the data to and from the cell tower.

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