1
Alain Dore, Jean Picard, Jacques Rochereau: Device for reading displacements of a movable member. Societe d Applications Generales d Electricite et de Mecanique, Larson Taylor and Hinds, February 14, 1978: US04074258 (27 worldwide citation)

A device for reading out the position of a movable member comprising a sc carried by that member and having equidistant coded references. Each reference is different from the others. A stationary optical system forms the image of a portion of the scale on a fixed detector. The detector comprises a l ...


2
Jacques Rochereau, Claude Leclerco: Interferometer gyroscope with electro-optical modulation and reduced reset frequency. Societe d Applications Generales d Electricite, Larson and Taylor, May 10, 1994: US05311281 (2 worldwide citation)

The gyroscope is based on the Sagnac effect and comprises a coiled dielectric waveguide, a source of electromagnetic waves provided with a splitter for sending two contrarotating waves from the source round the ring and an interference detector receiving the contrarotating waves. An electro-optical ...


3
Jacques Rochereau, Claude Leclercq: Ring gyro with electro-optical modulator.. Applic Gles Elec Meca, June 26, 1992: FR2670885-A1 (1 worldwide citation)

The gyro comprises a dielectric ring waveguide (10) and an electromagnetic source (12) fitted with a splitter to send into the ring two contrarotating waves coming from the source. An interference detector (22) receives the contrarotating waves. A first controlled electro-optical system gives the wa ...


4
Jacques Rochereau, Olivier Loubieres Philippetira: Fibre-optic gyro with extended measuring range and method relating thereto. Sagem, August 12, 1994: FR2701315-A1 (1 worldwide citation)

The gyro comprises: a fibre-optic coil (10); an electromagnetic source (12) fitted with a splitter for sending two counter-rotatory waves into the coil; an interference detector (22) for receiving the waves; electrooptical phase-shifting means (31) placed upstream of the coil for one wave and downst ...


5
Jacques Rochereau, Claude Leclercq: Interferometric gyroscope with electrooptic modulator.. Sagem, January 29, 1993: FR2679647-A1

The gyrometer based on the Sagnac effect comprises a dielectric waveguide in a ring (10); a source of electromagnetic waves (12) fitted with a splitter for sending into the ring two counter-rotatory waves coming from the source; an interference detector (22) receiving the counter-rotatory waves; fir ...


6
Jacques Rochereau, Claude Leclercq: Integrating gyro having electrooptic modulator. Soc Appl Gen Electr Mec &Lt Sagem&Gt, February 18, 1994: JP1994-042973

PURPOSE: To improve detectability and the linearity disposing a capacitor, being fed from a constant-current generator, in parallel with an electrooptic phase shifter. CONSTITUTION: A sawtooth save generator 30 drives one of electrooptic phase shifters 31 disposed at the opposite ends of a ring. The ...