SEMINAR ON DENSE WAVELENGTH DIVISION MULTIPLEXING : It has always been a technology talent to fill the constant need to extend the capabilities of the communication channel and DWDM (Dense Wavelength Division Multiplexing) resulted in a dramatic explosive expansion of the capacity of fiber networks to solve the problem of increasing traffic demand the most economical.
DWDM is a technique that allows the transmission of several discrete wavelengths with higher data rates than vegetable fibers allows single fiber bidirectional.
This is an advanced type of WDM optical channels in which shorter than the WDM.

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