FIELD: physics.
SUBSTANCE: invention relates to integrated photonics and relates to a method for simultaneous polling of sensors of a resonance type of a multichannel sensor system based on a photonic integrated circuit. Method involves preliminary formation of a polling signal spectrum by passing broadband laser radiation through a spectrum envelope generator and supplying the obtained signal to the input ports of several parallel connected sensors through an optical splitter, based on the output signals of which by means of photodetectors, the change in optical power in the spectrum is determined from intensity. Spectrum envelope shaper is a micro-ring resonator or a Mach-Zehnder interferometer, wherein the Q-factor of the spectrum envelope shaper is lower than the Q-factor of the sensors.
EFFECT: reduction of losses on connections and reduction of signal attenuation in the circuit.
1 cl, 4 dwg
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