Towards Integrated Optical Feedback FM-to-AM Conversion in Silicon Nitride for Displacement Sensing Applications

Abstract

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

Towards a label free coherent detectorless imaging module in photonic integrated circuits

“…The first experimental report of laser self-mixing propagated through a PIC, refers to the implementation of a FM to AM filter in silicon nitride waveguides. 11 Here we propose to extend the PIC functionality to include the control of the feedback coefficient and the illumination of the target by an Optical Phase Array (OPA) 21 used as a spatial light modulator 14 for the structuring of the light field required by single-pixel imaging. The functional blocks of the PIC are depicted in (Figure 3).…”

“…8 Being inherently confocal, 9 OFI allows volume scanning down to the penetration depth available at the wavelength of use. To further improve OFI portability, in-fiber applications 10 and, quite recently, applications in silicon photonics integrated circuit (PIC) 11 have also been demonstrated.…”

Optical Feedback FM-to-AM Conversion with integrated Micro-Ring Resonator for Displacement Sensing Applications

“…Furthermore, the sensitivity and response steepness can be regulated through adjustments to the optical path imbalance in the two arms of the MZI. To perform the OFI FM-to-AM conversion, we have previously implemented MZIs on silicon nitride (Si 3 N 4 ) process [11], as illustrated in Fig. 2.…”