Turn up and express traffic validation for communication systems

A multiplexer module, comprising:

• a wavelength selective switch configured to receive a plurality of first optical signals within a plurality of passbands, selectively multiplex the first optical signals within the plurality of passbands into a second optical signal, and output the second optical signal;
• an optical performance monitor operable to receive a sample optical signal and determine a power of one or more slice within the sample optical signal, the sample optical signal being selected from a group consisting of a particular optical signal of the first optical signals and a portion of the second optical signal including the particular optical signal;
• a controller processor;
• and
• a controller memory, the controller memory being a non-transitory processor-readable memory storing processor-executable instructions, that when executed by the controller processor, cause the controller processor to:
• validate the particular optical signal of the plurality of first optical signals using the power of one or more slice within the sample optical signal;
• and
• if the particular optical signal of the plurality of first optical signals is valid, cause the wavelength selective switch to open a particular passband so as to multiplex the particular one of the plurality of first optical signals into the second optical signal,
• wherein the controller memory further includes processor executable instructions that when executed by the controller processor further cause the controller processor to:
• control the wavelength selective switch to selectively apply a first attenuation to the particular optical signal of the plurality of first optical signals;
• detect a first power of the particular optical signal from the optical performance monitor;
• control the wavelength selective switch to selectively apply a second attenuation to the particular optical signal, the second attenuation being less than the first attenuation;
• detect a second power of the particular optical signal from the optical performance monitor;
• and
• calculate a peak-to-floor ratio for the particular optical signal based at least in part on the first power and the second power.