Thales

Centre National De La Recherche Scientifique

Columbia University

Université Paris-Saclay

Université De Paris

Universite Paris Cité

Sylvain Combrie

Alfredo De Rossi

Chee Wei Wong

Daniel Dolfi

Vincent Laude

Paolo Bortolotti

Jean-Charles Beugnot

Fabien Bretenaker

Chad Husko

Loic Morvan

Pierre Colman

Remy Braive

Abdelmadjid Anane

Isabelle Robert

Fabrice Raineri

Sarah Benchabane

Nguyen Vy Quynh Tran

This oscillator comprises: a source generating an incident optical wave at a pulsation frequency &#x3c9;; an optomechanical resonator, having optical resonances at the pulsation frequency &#x3c9; and mechanical resonances at a frequency fand generating, from the incident optical wave, emergent optical waves at the pulsation frequencies &#x3c9; and &#x3c9;&#x2212;2&#x3c0;f, and an acoustic wave at frequency f; and, a photodiode delivering a useful signal at frequency ffrom the emergent waves. This oscillator further comprises: an acoustic propagation means for propagating the acoustic wave over a distance in order to produce a delayed acoustic wave; a means for converting the delayed acoustic wave into a delay signal at the frequency f; and, a control loop, processing the delay signal in order to obtain a control signal applied to the source.

Radio frequency oscillator

The present invention relates to a radiofrequency oscillator comprising an optical resonator being a ring waveguide allowing the propagation of a first wave in a first direction and of a second wave in a second direction, the second direction being opposite to the first direction, and the resonator comprising an active optical medium generating a first optical line from the first wave and a second optical line from the second wave, the resonator being in contact with a part made of a material featuring a magneto-optic effect, an applier of external magnetic field of adjustable intensity on the resonator generating a frequency offset between the first wave and the second wave, and a processing circuit converting the beat between the two optical lines in a radiofrequency signal.

Radio frequency oscillator and associated source and apparatus

Exemplary embodiments of an apparatus, method, and computer readable medium are provided for producing a radiation. For example, a radiation having at least one pulse with a pulse-width of less than approximately 30 picoseconds can be produced using a photonic crystal waveguide arrangement which is (i) specifically structured and sized so as to be placed on an integrated circuit, and (ii) configured to produce the radiation having at least one pulse with a pulse-width of less than approximately 30 picoseconds.

Apparatus and method for generating femtosecond pulses via temporal soliton compression in photonic crystals

The invention relates to a photonic crystal circuit comprising a guide produced in a photonic crystal membrane on the surface of a substrate and a mode adapter coupled to said guide, wherein the membrane includes a central point constituting the mode adapter having a section gradient as termination of said guide, said point being suspended so as to allow the propagation of modes in a symmetrical manner. It also relates to an optical system incorporating said circuit coupled to an optical fiber.

Photonic crystal circuit comprising a guided mode adapter and optical system including said circuit coupled with an optical fiber

Growing community of inventors

Palaiseau, France

Sylvain Combrie