Light source modules for noise mitigation

An optical measurement system comprising:

• a controller;
• and
• a light source module having a set of outputs, comprising:
• a plurality of sets of light sources including a first set of light sources and a second set of light sources;
• a plurality of wavelength-specific multiplexers, each of which has an output and is configured to multiplex a corresponding set of light sources of the plurality of sets of light sources;
• and
• a multiplexing unit configured to route the outputs of the plurality of wavelength-specific multiplexers to the set of outputs, wherein:
• the controller is configured to simultaneously operate a first light source of the first set of light sources to generate light of a first wavelength and a second light source of the second set of light sources to generate light of a second wavelength, wherein the first wavelength is different from the second wavelength and the second wavelength is separated from the first wavelength by an amount that is less than a target separation amount of about 5 nanometers;
• the first light source and the second light source are multiplexed to the multiplexing unit by different wavelength-specific multiplexer of the plurality of wavelength-specific multiplexers;
• and
• the multiplexing unit is configured to simultaneously output light of the first wavelength and light of the second wavelength to at least one of the set of outputs.