2.4.8 Wavelength Division Multiplexing

Question 1

Wavelength Division Multiplexing (WDM)

Answer 1

Sends multiple data channels over a single fiber by using different colors (wavelengths) of light.

Question 2

Bidirectional (BiDi) Transceivers

Answer 2

Transceivers that send and receive data over a single fiber strand using slightly different wavelengths.

Question 3

Coarse Wavelength Division Multiplexing (CWDM)

Answer 3

WDM that supports up to 16 channels (wavelengths), less precise and cheaper than DWDM.

Question 4

Dense Wavelength Division Multiplexing (DWDM)

Answer 4

WDM that supports a high number of channels (20+), requires precise and expensive lasers.