Optical sensor readout and interrogating an optical sensor

A process for interrogating an optical sensor with an optical sensor readout, the process comprising:

• receiving, by a microcavity sensor, an optical frequency comb;
• producing, by the microcavity sensor, a post-sensor optical frequency comb from the optical frequency comb;
• subjecting the microcavity sensor to a physical perturbation and changing a resonant condition of the microcavity sensor in response to the physical perturbation;
• communicating the post-sensor optical frequency comb from the microcavity sensor to a photo detector;
• an electro optic modulator in optical communication with the microcavity sensor receiving, by an electro optic modulator, input light and a radiofrequency drive signal;
• producing, by the electro optic modulator, the optical frequency comb from the input light based on the radiofrequency drive signal;
• communicating the optical frequency comb from the electro optic modulator to the microcavity sensor;
• the photo detector in optical communication with the microcavity sensor and that:
• receiving, by the photo detector, the post-sensor optical frequency comb from the microcavity sensor;
• receiving, by the photo detector, a frequency shifted light;
• and
• producing, by the photo detector, a radiofrequency interferogram from interference between the post-sensor optical frequency comb and the frequency shifted light, such that the radiofrequency interferogram includes information to determine the physical perturbation subjected to the microcavity sensor.