Inventor

BERGH RALPH A

US27 patents

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

BERGH RALPH A

UNIV LELAND STANFORD JUNIOR

Apparatus and method for reducing phase errors in an interferometer

Method of manufacturing a fiber optic directional coupler

Fiber optic directional coupler

Fiber optic rotation sensor

Polarizer and method

Magneto-optic rotator for providing additive Faraday rotations in a loop of optical fiber

Fiber optic switchable coupler

Magneto-optic rotator

Fiber optic rotation sensor utilizing a magnetic shield and an optical isolator

Fiber optic dye amplifier

Fiber optic directional coupler

Interferometer with Kerr effect compensation

Apparatus and method for reducing phase errors in an interferometer

HONEYWELL INC

Backscatter error reducer for interferometric fiber optic gyroscope

Kerr effect compensator for a fiber optic gyroscope

Vibration rectification error reducer for fiber optic gyroscope

Three-axis fiber optic gyroscope having a single source and multi-coupler configuration

Magnetically insensitive fiber optic rotation sensor

Trimming of fiber optic winding and method of achieving same

Apparatus and method for trimming of fiber optic winding

Optical fiber sensor coil using reverse quadrupoles and method of winding same

BERGH RALPH A

Method and apparatus for obtaining a digital measure of absolute rotation

Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same

Occasional calibration phase-difference modulation for sagnac interferometer

Signal processing for a Sagnac interferometer

Method and apparatus for multiplexing multiple Sagnac interferometers with single input for source light

Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same