Compact spectrometer modules include an illumination channel and a detection channel. The illumination channel includes an illumination source operable to generate a broad spectrum of electromagnetic radiation. The detection channel includes an illumination detector and a Fabry-Perot component. The Fabry-Perot component is operable to pass a narrow spectrum of wavelengths to the illumination detector. Further, the Fabry-Perot component can be actuatable such that the Fabry- Perot component is operable to pass a plurality of narrow spectrums of wavelengths to the illumination detector.