Centre National De La Recherche Scientifique

Centre National De La Recherche Scientifique-cnrs

Virginie Nazabal

Jean-Louis Doualan

Patrice Camy

The invention relates to a chemical species optical sensor comprising: a fluorescent source () of incoherent infrared rays, including a chalcogenide glass matrix, doped with rare earth ions and combined with a pump source by means of a first optical fiber (); and at least one infrared ray detector (), provided with a spectral selection device () and set up to detect the rays that are emitted by said fluorescent source and have passed through a detection area (), said detector including a fluorescent element () formed by a chalcogenide glass matrix that is doped with rare earth ions and combined with a second pump source () by means of a second optical fiber (). Such a sensor can be used for differentially detecting a chemical species, and in particular CO.

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Rennes, France

Virginie Nazabal