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  • What is a DWDM used for?

  • FAQ    Release time:2023-07-20
  • Similar to CWDM’s mentioned in questions 3 and 4 DWDM’s are used to increase the amount of information or systems that can be transmitted over a single fiber. The DWDM’s will allow for many more channels using much tighter channel spacing. Typical DWDM’s will allow for but not limited to 32, 40 and 44 channels, while the 50GHz spacing will double that and allow for 64, 80 and 88 channels. 

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      What is a DWDM?
    • DWDM stands for Dense Wavelength Division Multiplexer. DWDM’s allow you to multiplex or demultiplex more than one wavelength over one fiber similar to the CWDM mentioned in questions 3 and 4. The word “Dense” is referring to the very narrow channel spacing measured in Gigahertz (GHz) as opposed to nanometer (nm). DWDM’s typically use channel spacing of 100GHz with a working channel passband of +/-12.5GHz from the wavelengths center. This allows you to add multiple wavelengths on to one fiber …
    • FAQ2023-07-20

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