(optical fibers) are long, thin strands of very pure glass about the diameter of a human hair. They are arranged in bundles called optical cables
and used to transmit light signals over long distances.
If you look closely at a single optical fiber, you will see that it has the following parts:
Hundreds or thousands of these optical fibers are arranged in bundles in optical cables. The bundles are protected by the cable's outer covering, called a jacket
Optical fibers come in two types: Single-mode fibers
- Used to transmit one signal per fiber (used in telephones and cable TV) Multi-mode fibers
- Used to transmit many signals per fiber (used in computer networks, local area networks)
Some optical fibers can be made from plastic
. These fibers have a large core (0.04 inches or 1 mm diameter) and transmit visible red light (wavelength = 650 nm) from LEDs."How Fiber Optics Work", HowStuffWorks
(»www.howstuffworks.com), by Craig C. Freudenrich, Ph.D.
HowStuffWorks, Inc., 2002.
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- fiber lengths can be used as voltage or temperature sensor.
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2010-03-24 00:26:39 (santanu )
last modified: 2002-03-24 03:26:20