A MEMs and/or NEMs-type measurement system comprising: - a resonant assembly (ER) comprising: • an input (E) and an output (S), • a plurality of N optical resonators Ri indexed i, each having a resonance wavelength λr,i, • at least one waveguide (GO) to which the optical resonators are coupled, • at least one element (Ei, Eij) coupled to each resonator Ri and configured to modify an optical transmission or reflection close to the resonance of said optical resonator, said modification being dependent on a physical quantity (u) to be measured, the measurement system being characterised in that it further comprises: - an emission device (DE) configured to emit a plurality of N light beams each having an emission wavelength λi in the resonance band of the associated optical resonator, - a modulation device (DM) configured to modulate each of the light beams at a modulation frequency fmod(i), - an injection device (DI) configured to superpose the N light beams to form an input beam (Bin) and to inject the beam as input to the resonant assembly, - at least one detector (Det) configured to detect a light beam arising from the beam at the output of the resonant assembly (Bout) and to generate an output signal (Sout), - a demodulation device (DDM) comprising at least N demodulation modules of synchronous-detection type, denoted LIA, to demodulate the output signal, so as to extract characteristic signals (Sdemod(i,j)) associated with each element, measured values (uij, zij) of said physical quantity being determined from said characteristic signals. - a resonant assembly (ER) comprising: • an input (E) and an output (S), • a plurality of N optical resonators Ri indexed i, each having a resonance wavelength λr,i, • at least one waveguide (GO) to which the optical resonators are coupled, • at least one element (Ei, Eij) coupled to each resonator Ri and configured to modify an optical transmission or reflection close to the resonance of said optical resonator, said modification being dependent on a physical quantity (u) to be measured, • an input (E) and an output (S), • a plurality of N optical resonators Ri indexed i, each having a resonance wavelength λr,i, • at least one waveguide (GO) to which the optical resonators are coupled, • at least one element (Ei, Eij) coupled to each resonator Ri and configured to modify an optical transmission or reflection close to the resonance of said optical resonator, said modification being dependent on a physical quantity (u) to be measured, - an emission device (DE) configured to emit a plurality of N light beams each having an emission wavelength λi in the resonance band of the associated optical resonator, - a modulation device (DM) configured to modulate each of the light beams at a modulation frequency fmod(i), - an injection device (DI) configured to superpose the N light beams to form an input beam (Bin) and to inject the beam as input to the resonant assembly, - at least one detector (Det) configured to detect a light beam arising from the beam at the output of the resonant assembly (Bout) and to generate an output signal (Sout), - a demodulation device (DDM) comprising at least N demodulation modules of synchronous-detection type, denoted LIA, to demodulate the output signal, so as to extract characteristic signals (Sdemod(i,j)) associated with each element, measured values (uij, zij) of said physical quantity being determined from said characteristic signals. <EOS>