Thales

Centre National De La Recherche Scientifique

Sorbonne Université

Université Paris-saclay

Université Paris-sud 11

Université De Rennes I

Ecole Nationale Superieure De Chimie De Paris

Ecole Normale Superieure Paris-saclay

Loïc Morvan

Jean-Pierre Huignard

Jean-Paul Pocholle

Daniel Dolfi

Vincent Cros

Martine Doisy

Mehdi Alouini

Stéphanie Molin

Eric Lallier

Paolo Bortolotti

Abdelmadjid Anane

Romain Demur

Arnaud Grisard

Martin Collet

Abdelkrim El Amili

Grégoire Pillet

Philippe Goldner

Anne Chauvet

Perrine Berger

Alban Ferrier

The general field of the invention is that of fiber-optic sensors comprising at least one measurement optical fiber having an optically pumped doped amplifying medium, the optical characteristics of which are sensitive to a physical quantity, the fiber having at least one Bragg grating. The fiber is designed so as to generate, in the amplifying medium, two optical waves having different optical frequencies that propagate in the same direction after reflection on the Bragg grating and are emitted by the amplifying medium, the two optical frequencies depending on the physical quantity. The two waves may be generated using either a birefringent polarization-maintaining fiber or a DBR (Distributed Bragg Reflector) laser cavity. Notably, this sensor may be used as a hydrophone.

Self-referenced optical fiber sensor and related sensor network

Growing community of inventors

Orsay, France

Loïc Morvan