A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LEDs it is monochromatic, occurring
… Definition continues below.
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An Optical Time Domain Reflectometer (OTDR) is an important instrument used by organizations to certify the performance of new fiber links and detect problems with existing fiber links.
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LIGHT EMITTING DIODES DEFINITION (continued): … at a single wavelength. Theoutput from an LED can range from red (at a wavelength of approximately 700 nanometers) to blue-violet (about 400 nanometers). Some LEDs emit infrared (IR) energy (830nanometers or longer); such a device is known as an infrared-emitting diode (IRED).
An LED or IRED consists of two elements of processed material called P-typesemiconductors and N-type semiconductors. These two elements are placed … Light Emitting Diodes definition sponsored by SearchCIO-Midmarket.com, powered by WhatIs.com an online computer dictionary
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