Interferometrischer Sensor und seine Anwendung in einer interferometrischen Vorrichtung.

摘要

The present invention relates to an interferometric sensor, characterised in that it comprises two interferometers in parallel, utilising (A) central and (B) exterior concentric light beams emanating from an optical fibre placed at the focus of a collimator lens (19), the first interferometer utilising a central beam (A) comprises a deformable membrane (115), the deformation of which is sensitive to the pressure and to the temperature which cause variation of its position in relation to one of the faces of a first glass plate (13) having parallel faces as a function of these two parameters, the second interferometer utilising the exterior beam (B) in which the distance between two faces of two glass plates having parallel faces (16, 17) retained by a cylindrical spacer (15) varies as a function of the differing coefficients of expansion of each one of these two plates (16, 15), the collimator lens (19) for the two beams of light in the direction of an optical fibre (113), these two optical beams having two different path differences, each creating a fluted spectrum of the source, each spectrum undergoing recombination by addition towards the optical fibre (113). ……