Optical Amplifiers
Cost efficiency has led to repeaters being largely replaced in long-haul systems by optical amplifiers since one (broadband) amplifier can be used for many wavelengths in a Wavelength Division Multiplexing (WDM) system. Note that this class of device is sometimes called "Optical Amplifier Repeater".
Read more about this topic: Optical Communications Repeater
Famous quotes containing the word optical:
“There is an optical illusion about every person we meet.”
—Ralph Waldo Emerson (1803–1882)
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