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    DWDM

    DWDM

    Dense Wave Division Multiplexing can fit 40 channels at 100GHz spacing—or 80 channels at 50GHz spacing—into the 3rd transmission window, or C-Band, at 1550nm.

    These tight tolerances require more sophisticated transceivers and highly sensitive filters and prisms in the passive devices, and as a result, deploying DWDM can be 30%+ more expensive than CWDM networks.

    DWDM accommodates more channels in a smaller band to maximize the capacity of fibers and can be amplified for longer distance transmissions, generally more than 35 miles (roughly 60 kilometers).

    DWDM

     

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