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-CWDM vs DWDM-

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Dense Wavelength Division Multiplexing DWDM is an abbreviation, this is a used to improve the existing fiber-optic backbone network bandwidth laser technology. More specifically, the technology is specified in an optical fiber in a single optical carrier multiplexing close spectral spacing to take advantage of the transmission performance can be achieved (for example, to achieve the minimum degree of dispersion or attenuation), so that at given information transmission capacity, the need to reduce the total number of optical fiber.

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