OPTICAL MODULE, SIGNAL PROCESSING SYSTEM, AND SIGNAL PROCESSING METHOD

A signal processing unit of an optical module includes a voltage signal control unit that controls a voltage signal having a frequency for causing a movable mirror to resonate, so that the voltage signal is applied to the mirror device, and an intensity acquisition unit that performs an intensity acquisition process. The intensity acquisition process is a process of acquiring a measurement light intensity of the interference light of the measurement light M times at a first time interval based on the frequency of the voltage signal in each of a plurality of cycles among P cycles continuous in the voltage signal, acquiring an addition value of a plurality of the measurement light intensities mutually corresponding for the same number of times, acquiring a laser light intensity of the interference light of the laser light N times at a second time interval based on the frequency of the voltage signal in each of the plurality of cycles, and acquiring an addition value of a plurality of the laser light intensities mutually corresponding for the same number of times.