Inventor

LEFEVRE HERVE

FR47 patents

⚠️ This page may combine multiple inventors who share the name “LEFEVRE HERVE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEFEVRE HERVE

PHOTONETICS

Singlemode laser source tunable in wavelength with a self-aligned external cavity

Optical reflector and laser with external cavity incorporating such a reflector

Singlemode laser source tunable in wavelength with a self-aligned external cavity

Optical spectrum analyzer and process for analyzing the corresponding spectrum

Tunable laser source with a self-aligned external cavity and a retro-reflecting-dispersing device

Fiber optic measuring device, rate gyro, navigation and stabilization system, and current sensor

Optical-fiber measuring device, gyrometer, central navigation and stabilizing system

Multiwavelength source

Appliance for measuring polarization mode dispersion and corresponding measuring process

Optical wave-guide wavelength multiplexer and demultiplexer

Fibre optic measuring device, rate gyro, stabilization system and magnetic field or current sensor

Continuously wavelength-tunable monomode laser source

Process for measuring rotation speeds about several axes, and a multiplexed multi-axial gyrofiber allowing this measurement

Free space laser with self-aligned fiber output

Laser source with integral filtering of the amplified spontaneous emission

Wavelength tuneable laser source

Wavelength filtering self-aligned retroreflecting optical system, a monochromator and a laser incorporating such a system

Optical fiber wavelength, multiplexer and demultiplexer

Rectangular response optical filter for partitioning a limited spectral interval

THOMSON CSF

Multiple-point temperature sensor using optic fibers

Monomode optical fiber ring interferometric device with semiconductor diode as light energy emission reception/amplification means

Device for measuring a nonreciprocal phase shift produced in a closed-loop interferometer

Optic fiber hydrophone and antenna associating a series of hydrophones

Method of coiling an optical fiber gyroscope and an optical fiber coil thus obtained

Device for the connection of optic fibers to an integrated optic circuit and method for making the said device

Three-axis fiber-optic ring interferometer

Measuring device for the measurement, in a wide range, of a non-reciprocal phase shift generated in a ring interferometer, and measuring method

Optical fiber interferometric rate gyro particularly adapted to the measurement of low rotational speeds

Integrated optical waveguide, method for its manufacture, and its use in an electro-optical modulator

Compact optical coupling device and optical-fiber interferometer gyrometer comprising such a device

Spool for optic fiber and method for winding without stress on optic fiber

Method for the detection of polarization couplings in a birefringent optical system and application of this method to the assembling of the components of an optical system

Method and device for detecting propagation time variations in a ring interferometer and application thereof to wave length control

Monomode optical fiber reciprocal ring interferometer device

Coherent signal processing device using an optical delay line and application thereof to filtering correlation product and spectral analysis

Optical signal rejection filter and application of said filter to ring interferometers

IXBLUE

Attenuated primary reflection integrated optical circuit

Integrated optical circuit with an off-center groove

Interferometric measurement device

Fibre-optic measurement device, rate gyro, and inertial stabilisation and navigation unit

Interferometric measurement device comprising a filtering interferometer

Fibre-optic interferometric measurement device comprising a ring resonator, gyrometer and inertial attitude or navigation unit comprising such a device

LEFEVRE HERVE

Apolarized interferometric system, and apolarized interferometric measurement method

Fiber-optic measurement device, gyrometer, and navigation and inertial-stabilization system

PHOTONETIC S A

Light source with stabilized broadband and associated optical fiber gyroscope

PHONONETICS S A

Optical fiber measuring device, gyrometer, central navigation and stabilizing system

PHOTONECTICS

Optical fiber measuring device using phase difference