Assertion: multiplexer's input | /r/CapableOf | comprise two or more wavelength ranges
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text: A wavelength demultiplexer (CWDM DMUX) (or optical demultiplexer (OD)) is a device which performs the inverse operation of a wavelength multiplexer, where the input is an optical signal comprising two or more wavelength ranges and the output of each port is a different preselected wavelength range.