Wave Division Multiplexing: Coarse WDM (CWDM)

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Coarse WDM (CWDM)

Coarse Wave Division Multiplexing (CWDM) combines up to 16 wavelengths onto a single fiber. CWDM technology uses an ITU standard 20nm spacing between the wavelengths, from 1310nm to 1610nm. With CWDM technology, since the wavelengths are relatively far apart (compared to DWDM), the transponders are generally not very expensive.

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