Abstract: The invention relates to a laser source for emitting multispectral light emission having a plurality of spectral lines separated by a determined spectral interval. The laser source comprises a bank of tunable lasers, an optical filter having a plurality of resonant frequencies, a photodetector arranged downstream of the optical filter in order to establish a signal representative of the multispectral radiation, a modulator associated with the bank of tunable lasers, the modulator being capable of modulating by a modulation frequency the emission frequency of the light emission emitted by at least one tunable laser of the bank. The laser source also comprises a locking device of at least one tunable laser configured to process the signal representative of the multispectral radiation and to adjust the emission frequency to a resonant frequency of the filter.

Abstract: The invention relates to a method for the spectral positioning of a photonic system, the photonic system carrying out the steps of conditioning a control signal (V) in order to produce a digital control signal, carrying out a first step (OP1) of processing the digital control signal in order to produce at least one digital signal, which digital signal is referred to as the “first locking signal”, representative of the power of a second harmonic or the main component of the modulation frequency (Fd) present in the digital control signal, carrying out a second step (OP2) of processing the first locking signal (Vr1) in order to produce a digital adjustment command, the second step (OP2) being intended to optimize the amplitude of the first locking signal, (Vr1) and conditioning the digital adjustment command in order to produce the adjustment command (CLa) and apply the adjustment command to the adjustment device (H1).

Abstract: The invention relates to a photonic system comprising a laser source capable of emitting at least one multispectral light radiation. The photonic system comprises a photonic component having a plurality of tunable optical filters respectively having a plurality of resonant frequencies. The photonic system also comprises a photodetector arranged downstream of the component to establish a signal representative of the multispectral radiation, a modulator associated with the bank of tunable lasers. The laser source also comprises a locking device configured to process the signal representative of the multispectral radiation and to adjust the resonant frequency of a tunable optical filter of the photonic component to the emission frequency of the light radiation of a laser of the bank.

Abstract: The invention relates to a laser source for emitting multispectral light emission having a plurality of spectral lines separated by a determined spectral interval. The laser source comprises a bank of tunable lasers, an optical filter having a plurality of resonant frequencies, a photodetector arranged downstream of the optical filter in order to establish a signal representative of the multispectral radiation, a modulator associated with the bank of tunable lasers, the modulator being capable of modulating by a modulation frequency the emission frequency of the light emission emitted by at least one tunable laser of the bank. The laser source also comprises a locking device of at least one tunable laser configured to process the signal representative of the multispectral radiation and to adjust the emission frequency to a resonant frequency of the filter.