Strands of glass are inside of fiber optic cables, which are very thin. The center of these strands is where the light travels.
One optical fiber has enough strength to carry three million voice calls. Fiber optic cables also have a unique feature to help them prevent loss of signal and to operate efficiently.
This is known as cladding and is a layer of glass that helps to reflect light back in on itself. There are two main types of fiber optic cables functioning in a fiber optic network.
fiber optics technician
These are known as single mode and multi-mode. Single-mode is known for thin glass strands, along with the use of a laser. Multi-mode is known for the use of LEDs.
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