Prepared by:Kapilbayeva Zhainagul Checked by:Shokaeva Karlygash
Optical or optical technology refers to anything relating to light or vision, whether it be visible light or infrared light, that performs a specific function. For example, optical fiber, like that shown to the right is a type of wire commonly made out of glass or plastic that carries light signals. These signals can be interpreted by a computer as data ( binary ) and is one example of how data can be transferred over a network. optical fiber binary
A computer mouse is an example of an optical device that uses optical technology. It uses a light- emitting diode and photodiodes to determine the direction a mouse is moving across a surface. mouse
Optical Fibers Besides entertaining cats, laser light has many other uses. One of these is carrying communication signals in optical fibers. Sounds or pictures are encoded in pulses of laser light, which are then sent through an optical fiber. All of the light reflects off the inside of the fiber, so none of it escapes as you can see in the Figure below. As a result, the signal remains strong even over long distances. More than one signal can travel through an optical fiber at the same time if different wavelengths of light are used. Optical fibers are used to carry telephone, cable TV, and Internet signals.below
Lasers Did you ever see a cat chase after a laser light, like the one in Figure below? A laser is a device that produces a very focused beam of visible light of just one wavelength and color. Waves of laser light are synchronized so the crests and troughs of the waves are all in the same plane. The Figure below shows why a beam of laser light is so focused compared with ordinary light from a flashlight.belowcolorbelow
Optical carrier Optical Character Recognition Optical communications Optical disc Optical drive Optical drive audio connector Optical mouse Optical reader Optical scanner Optical zoom
