Université De Technologie De Troyes

Université Joseph Fourier

Université Grenoble Alpes

Centre National De La Recherche Scientifique-cnrs

Institut National Polytechnique De Grenoble

Surys

Sylvain Blaize

Yassine Hadjar

Aurelien Bruyant

Gilles Lerondel

Mikael Renault

Pierre Benech

Pascal Royer

Etienne Le Coarer

Pierre Kern

Alain Morand

Aurélien Bruyant

Laurent Arnaud

Soukaina Es-Saidi

Loïc Le Cunff

Demetrio Macias

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

Interferometric device and corresponding spectrometer

A spectrometer for sampling interferograms in two dimensions offering a large spectral band and high spectral resolution with a relative compactness. The spectrometer includes a refracting surface, an array of detecting elements and an array of diffusion elements capturing means at the refracting surface of an interferogram delivered from two interference beams (F, F) and forming interference lines parallel to each other along the transverse axis (Ox) of the interferogram within the plane (xOy) of the refracting surface, the array of detection elements being parallel to the plane of the refracting surface and arranged to detect the spatial distribution of the interferogram, wherein the array is a two-dimensional array over an entirety of which the detections elements are disposed equidistantly, and wherein interference lines exhibit an angular shift with the capturing means.

Compact spectrometer for two-dimensional sampling

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 (&#x3c8;) 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.

Evanescent wave microspectrometer

The invention relates to a spectrograph () comprising a waveguide () provided with accesses (), a means for injecting two guided contra-propagative waves by each accesses in such a way that a spatial interference is formed in the waveguide, means () for detecting the energy of the evanescent wave of the guided field produced by the interference of said contra-propagative waves.

Contra-propagative wave spectograph

Growing community of inventors

Troyes, France

Sylvain Blaize