Coarse Wavelength-Division Multiplexing (CWDM), the first generation of WDM in optical communication, offers up to 18 channels. In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i. Understanding WDM: Ideal for L-Band HTS and Reference or Tx/Rx in a single fiber, in satcom and diverse antennas within broadcast applications. This allows multiple channels of data to be transmitted simultaneously. It's important to note here that the technology behind WDM in optical fiber communication is rapidly developing -- we haven't yet reached the limit on how many distinct wavelengths we can channel through a single strand of fiber.
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