Abstract: A photonic sensor including an interferometer having a first arm and a second arm including respective optical waveguides, wherein the first arm includes: at least a first coupling device for coupling a guided propagation mode of the waveguide and a free propagation mode of an ambient medium; and an optical system configured to direct the free propagation mode toward the or a second coupling device for coupling the free propagation mode of the ambient medium and a guided propagation mode of the waveguide; whereby a light wave traversing the first arm travels one portion of its path through the ambient medium.

Abstract: A gas-phase analytical system including an injection unit configured to inject a sample to be analyzed including at least one chemical compound, a unit for introducing a stream of carrier gas, a transport column, and a detection device, the chemical compound(s) being entrained by the gas into the column up to the device. The device is an optical detector including at least one Mach-Zehnder interferometric sensor supplied by an optical source and integrated into a microfluidic structure, the sensor comprising a sensing arm exposed to the chemical compound(s) and a reference arm impermeable to the chemical compound(s), the sensor(s) being designed to optically detect the passage of the chemical compound(s) through the sensing arm.

Abstract: An interferometric system for detecting analytes present in a fluid sample, including: an array of Mach-Zehnder interferometers arranged periodically and rectangularly whose arms extend in a spiral and/or serpentine fashion with an aspect ratio equal to 1; and an array of sensitive surfaces each formed of receptors with which the analytes are able to interact by adsorption/desorption and arranged periodically and hexagonally.

Abstract: An optical coupling device (100) configured to optically couple a first optical guide device (102) to a second optical guide device (104), comprising at least one first optical input-output through which the first optical guide device is intended to emit and/or receive a first light beam (103), and a second optical input-output through which the second optical guide device is intended to receive and/or emit the first light beam, further including at least one holographic diffraction structure (108) configured to guide and adapt the first light beam between the first and second optical inputs-outputs of the optical coupling device.

Abstract: A device includes capture sites; an imaging system for imaging the capture sites; a memory that stores a map of the capture sites including capture site shapes having respective predefined positions in the map and to be placed on an image of the capture sites, at a predefined position and in a predefined orientation so that the capture site shapes respectively indicate the areas of the image occupied by the capture sites; and a module for detecting an odor from an image of the capture sites and the map. The device includes an update module for obtaining an image of the capture sites, for determining, in the image, real areas respectively occupied by the capture sites, for determining, on the basis of the real areas, a correction of the position and/or of the orientation of the overlay of the map; and for updating the position and/or orientation of the overlay.

Abstract: An odor identification device includes capture sites designed to capture odorous volatile organic compounds present in an ambient air; an imaging system for imaging the capture sites designed to provide at least one raw image of the capture sites. The device further includes an unblurring module designed to implement an unblurring filter using an estimate of a spatial impulse response of the imaging system, on an image to be unblurred that originates from at least one raw image of the capture sites; and a module for identifying an odor from at least one image of the capture sites unblurred by the unblurring module.

Abstract: A photonic integrated circuit for an interferometric sensor includes a first waveguide called sensitive arm wherein a first portion of the light radiation is propagated, the sensitive arm being exposed to a first ambient medium and to at least one compound to be detected inducing a modification of the local refractive index perceived by the evanescent part of the electromagnetic field of the first portion of the light radiation, and a second waveguide called reference arm wherein a second portion of the light radiation is propagated, an encapsulation layer encapsulating the reference arm, the encapsulation layer being impermeable to the compound or compounds to be detected, so that the reference arm is exposed only to a second ambient medium, substantially of the same nature as the first ambient medium and without the compound to be detected and interferometric sensor comprising a photonic integrated circuit according to the invention.