Abstract: An interferometric device: includes a separator, for separating a collimated beam (F0) into first (F1) and second (F2) incident beams; at least one transducer; and a transparent optical system, including at least three planar diopters (D1, D2, D3). The the transducer is based on plasmon resonance and in contact with the diopter (D1); the diopter (D2) has a network of nanostructures; the optical system and the separator being configured such that the beam (F1) and the beam (F2) undergo total internal reflection on the diopter (D1) and on the diopter (D3), respectively, prior to interfering on the diopter (D2) by total internal reflection and to forming an interferogram in which the central fringe is located at a convergence point (ZOPD).

Abstract: An evanescent wave microspectrometer includes a planar diopter separating two transparent media, an optical sensor with a pixel array, and disposed in the second transparent medium, and an interference device disposed such that at least a part of the interference device is in contact with evanescent waves generated at the surface of the diopter. The micro-spectrometer also includes a memory storing a map having a set of set of data grids including the optical response of said sensor for a set of quasi-monochromatic wavelengths of a calibration light source, and a calculator configured to determine the spectrum (?) of a test light source configured to generate evanescent waves at the surface of the diopter, on the basis of the map and the optical response of the sensor.

Abstract: An evanescent wave microspectrometer includes a planar diopter separating two transparent media, an optical sensor with a pixel array, and disposed in the second transparent medium, and an interference device disposed such that at least a part of the interference device is in contact with evanescent waves generated at the surface of the diopter. The micro-spectrometer also includes a memory storing a map having a set of set of data grids including the optical response of said sensor for a set of quasi-monochromatic wavelengths of a calibration light source, and a calculator configured to determine the spectrum (?) of a test light source configured to generate evanescent waves at the surface of the diopter, on the basis of the map and the optical response of the sensor.

Abstract: An interferometric device: includes a separator, for separating a collimated beam (F0) into first (F1) and second (F2) incident beams; at least one transducer; and a transparent optical system, including at least three planar diopters (D1, D2, D3). The the transducer is based on plasmon resonance and in contact with the diopter (D1); the diopter (D2) has a network of nanostructures; the optical system and the separator being configured such that the beam (F1) and the beam (F2) undergo total internal reflection on the diopter (D1) and on the diopter (D3), respectively, prior to interfering on the diopter (D2) by total internal reflection and to forming an interferogram in which the central fringe is located at a convergence point (ZOPD).