Commissariat a L'energie Atomique Et Aux Energies Alternatives

Stmicroelectronics (Crolles 2) Sas

STMicroelectronics

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique

University Claude Bernard - Lyon 1

Institut National Des Sciences Appliquees De Lyon

Ecole Centrale De Lyon

Cpe Lyon Formation Continue Et Recherche

Et Aux Energies Alternatives

Stmicroelectronics (Crolles 2) Sas; Stmicroelectronics Sa

Alcatel Lucent

Stmicroelectronics (Rousset) Sas

Cpe Lyon

Salim Boutami

Karim Hassan

Michel Marty

Laurent Frey

Sergio Nicoletti

Mickaël Brun

Sandrine Lhostis

Sylvie Menezo

Jean-Jacques Yon

Pierre Labeye

Christophe Kopp

Jérôme Le Perchec

Geoffroy Dumont

Roch Espiau De Lamaestre

François Templier

Bruno Mourey

Vincent Reboud

Mathieu Dupoy

Maryse Fournier

Alain Gliere

Pierre Imperinetti

Jerome Hazart

Agnès Arnaud

Jean-Marc Fedeli

Laurent Duraffourg

Cedric Allier

Tony Maindron

Yohan Desieres

Olivier Gravrand

Pierre Joly

Gilles Grand

Cédric Allier

Romain Girard Desprolet

Stéphane Getin

Bernard Aventurier

Gabriel Jobert

Sébastien Becker

Alexandre Mary

Boris Taurel

Wilfried Rabaud

Cyrielle Monpeurt

Ujwol Palanchoke

Anthony Lefebvre

Stéphane Pocas

Sebastien Becker

Jérôme Hazart

Selimen Benahmed

Sebastien Jouan

Emerick Lorent

Bayram Karakus

Stephane Pocas

Olivier Cioni

Aurélien Suhm

Christian Seassal

Cécile Jamois

Justin Rouxel

Sébastien Jouan

Christophe Jany

Thomas Anfray

Guido Rademaker

Jonathan Pradelles

Grégory Maisons

Fabien Eloi

Julien Favreau

Jérome Hazart

Jérome Le Perchec

Espiau De Lamaestre Roch Roch

A light distributing device configured for, in use, distributing, over a scene to illuminate light rays that come from an auxiliary light source, and which comprises: a planar waveguide, with a core layer disposed between the two cladding layers; and an extraction set, located in the planar waveguide, and constituted by a plurality of diffraction gratings distributed in the two dimensions of a plane parallel to the plane of the planar waveguide.

Device for distributing light based on diffraction gratings

An optical particle detector including at least one channel intended to receive a fluid carrying at least one particle, and across which light rays are intended to pass such that the light rays are partially scattered by the at least one particle, a plurality of photodetectors capable of receiving said scattered light rays, wherein the detector includes at least one optical waveguide configured to collect, at least at one entrance of the waveguide, light rays that were not scattered by the at least one particle and having crossed the channel, and to reinject the unscattered light rays into the channel through at least one exit of the waveguide.

Optical particle detector and method of manufacturing the same

A device for the photoacoustic characterisation of a gaseous substance, includes a chamber intended to contain the gaseous substance to characterise and into which a light beam is injected. The chamber is delimited, inter alia, by an inner face, on which a part of the light beam is reflected. This inner face is etched so as to have recesses, each recess being delimited laterally by a lateral surface of which a part at least is tilted, with respect to an average plane of the inner face, by a given tilt angle (α).

Device for photoacoustic characterisation of a gaseous substance and method for manufacturing such a device

The invention relates to a diffuserintended to be facing a light sourcecomprising a transmission layerand a diffusion layerintended to diffuse a light transmitted by the light source, the diffuser being characterised in that the diffusion layer comprises a plurality of metal structures, called metal nanostructures, having dimensions less than a wavelength of the light transmitted, said metal nanostructures having varied sizes and being distributed within the diffusion layer such that adjacent metal nanostructures have between them, varied distances and preferably less than the wavelength of the light transmitted. The invention also relates to a method for manufacturing such a diffuser, and a display system comprising such a diffuser.

Diffusive structure for light source

The invention provides an optical particle sensor () comprising:

Optical particle sensor

A wavelength demultiplexing device configured so as to spatially distributing the spectral contributions of an incident light beam, when in use, and which includes a linear waveguide and a planar waveguide, formed in a coplanar way and adapted to be optically coupled with one another along a coupling line, by evanescent coupling. Such a device may further include diffraction gratings located in the planar waveguide, to extract light out of the latter.

Wavelength demultiplexing device in particular for out-of-plane demultiplexing

A device for detecting gases or particles includes a light source capable of emitting a light beam, an interaction cavity including first and second reflective walls substantially parallel with each other, a plurality of monomode optical waveguides each having a first end of width loptically coupled to the light source and a second end of width l, greater than the width l, optically coupled to a first end of the interaction cavity, each optical waveguide including in its second end of width la diffraction grating having a pitch P in particular chosen as a function of a concentration C and a parameter &#x3b1; of interaction with the light beam of a type of gas or particle to detect; and a detector coupled to a second end of the interaction cavity.

Device for detecting gases or particles and method for manufacturing such a device

The present invention relates to a particle detector comprising at least an optical device configured to emit a luminous radiation; and a substrate extending in a plane and defining a channel intended to receive particles, the channel extending principally in a direction perpendicular to the principal plane; characterised in that the detector comprises a matrix of photo detectors and a reflecting surface; the matrix of photo detectors and the reflecting surface being disposed on mutually parallel planes and situated on either side of said portion of the substrate so that a part of the luminous radiation passes through the channel by being diffracted by a particle, then reflects off the reflecting surface, and then reaches the matrix of photo detectors.

Optical detector of particles

An optoelectronic device including an active area capable of supplying an electromagnetic radiation and sandwiched between first and second semiconductor layers, the first semiconductor layer delimiting a surface and including a first portion in contact with the active area and delimiting a first part of the surface and extending in a second portion delimiting a second part of the surface, the second portion forming a single-mode waveguide, the optoelectronic device including an opaque portion reflective for the electromagnetic radiation covering the first part and including a diffraction grating on the second part capable of extracting the electromagnetic radiation from the second portion.

Optoelectronic device with light-emitting diode with extraction enhancement

An optoelectronic device including an active area capable of supplying an electromagnetic radiation and sandwiched between first and second semiconductor layers, the first semiconductor layer delimiting a surface, the optoelectronic device further including a diffraction grating capable of extracting the electromagnetic radiation from the first semiconductor layer, the diffraction grating including holes extending in the first semiconductor layer from said surface, the width of the holes measured in a plane parallel to said surface increasing from a central portion of the diffraction grating to a peripheral portion of the diffraction grating.

A method for observing a fluorescent sample, the sample comprising a fluorescent agent that emits fluorescence light, in a fluorescence spectral band, when it is illuminated by excitation light, in an excitation spectral band, the method comprising the following steps:

Device and method for observing a fluorescent sample

A device of collimation of a light beam including a monomode waveguide, a first element of collimation of the light beam parallel to a first plane and a second element of collimation of the light beam parallel to a second plane, the first collimation element coupling the waveguide to the second collimation element.

Collimation device

The invention relates to an optical coupler () in a vertical configuration, capable of working for a wavelength and comprising a first waveguide () and a second waveguide (). The second waveguide () has a patterning () in the form of a series of patterns (), the patterns () extending along a transverse direction (X) perpendicular to the longitudinal direction (Z), being parallel to each other and orthogonal to the general direction of the first waveguide (), each pattern () being arranged both in the core () and the cladding () of the second waveguide () and having parameters influencing the evanescent wave coupling between the first waveguide () and the second waveguide (), said parameters being chosen such that the coupling (C) is greater than 15%.

Optical coupler provided with a structuration

An optical device for a biological or chemical sensor includes: an absorption cavity configured to receive a biological or chemical medium; an injection waveguide to inject an analysis light beam into the absorption cavity; and an extraction waveguide to extract a measurement light beam, corresponding to the analysis light beam after transit through the absorption cavity. The absorption cavity has a shape of a right cylinder with an elliptical base. One end of the injection waveguide is placed at a first focus of the ellipse and one and of the extraction waveguide is placed at a second focus of the ellipse. A core of the injection waveguide and a core of the extraction waveguide each have a tip-shaped end, with a constant height in a plane parallel to the generatrix of the right cylinder and a tip-shaped cross section in planes parallel to the base of the right cylinder.

Absorption cavity with entrance and exit waveguides for a chemical or biological sensor

A photodiode which includes a core of a first waveguide that terminates in a tapered termination that extends above a core, made of germanium or of SiGe, of a second waveguide, a matching strip that extends opposite the tapered termination on one side and opposite the core of the second waveguide on the opposite side, this matching strip being coupled optically to the core of the second waveguide by an evanescent coupling and including a first zone inside which its effective propagation index is equal to the effective propagation index of a second zone of the tapered termination, these first and second zones optically coupling the tapered termination to the matching strip through a modal coupling, and a low-index layer that extends between the matching strip and the tapered termination.

Photodiode with improved power absorption

Growing community of inventors

Grenoble, France

Salim Boutami