Inventor

QIU TIEQUN

US69 patents

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

QIU TIEQUN

HONEYWELL INT INC

System and method for reducing laser phase noise in a resonator fiber optic gyroscope

Optical resonator gyro and method for reducing resonance asymmetry errors

Laser with transmission and reflection mode feedback control

Systems and methods for fiber optic gyroscopes utilizing reference ring resonators

Three-laser resonator fiber optic gyroscope with enhanced frequency reference cavity

Systems and methods for stabilized stimulated brillouin scattering lasers with ultra-low phase noise

Resonator fiber optic gyroscope without frequency overlap in sideband-heterodyne-detection modulations

Systems and methods for a polarization matched resonator fiber optic gyroscope

Methods and apparatus of tracking/locking resonator free spectral range and its application in resonator fiber optic gyroscope

Method and system for detecting optical ring resonator resonance frequencies and free spectral range to reduce the number of lasers in a resonator fiber optic gyroscope

Optical frequency comb stimulated Brillouin scattering gyroscope

Light-phase-noise error reducer

Bias-instability reduction in fiber optic gyroscopes

Systems and methods for reducing polarization-related bias errors in RFOGS

Apparatus and method for diminishing mode lock induced error in stimulated brillouin scattering waveguide ring laser gyroscopes

Small low cost resonator fiber optic gyroscope with reduced optical errors

Stimulated Brillouin scattering (SBS) gyro with coupled resonator for frequency-dependent output coupling

Single pump cascaded stimulated Brillouin scattering (SBS) ring laser gyro

Compensated broadband fiber light source with stable mean wavelength

Symmetric three-laser resonator fiber optic gyroscope

Controlled modulation of light beam with highly stable suppression of carrier or sidebands

Bias-instability reduction in fiber optic gyroscopes

Apparatus and method for diminished bias error due to polarization mismatch

Reducing rotation sensing errors from laser source signal and modulation cross-talk

System and method for glare suppression and ranging

Resonant fiber optic gyroscope with polarizing crystal waveguide coupler

RFOG with optical heterodyning for optical signal discrimination

Systems and methods for correcting errors in gyroscopes

RFOG with reduced polarization mode induced bias error

Bias-reduced fiber optic gyroscope with polarizing fibers

Optical gyroscope with broadband comb interrogation

Resonant optical gyroscope with a broadband light source and RIN reduction techniques

Closed loop operation of broadband resonator optical gyroscope using sawtooth phase modulations

Broadband resonator optical gyroscope with efficient optical power management for low shot noise

QIU TIEQUN

Fiber resonator gyroscope with low round trip loss and high output power

Resonator fiber optic gyroscopes with reduced rotation rate instability from back reflections

Fiber light source with high mean wavelength stability and reliability

Resonator optical gyroscope having input beam modulation optimized for high sensitivity and low bias

Compact resonator fiber optic gyroscopes

STRANDJORD LEE K

Laser with transmission and reflection mode feedback control

System and method for reducing errors in a resonator fiber optic gyroscope

System and method for enhancing signal-to-noise ratio of a resonator fiber optic gyroscope

RFOG with optical heterodyning for optical signal discrimination

SANDERS GLEN A

Resonator fiber optic gyroscope utilizing laser frequency combs

Resonator fiber optic gyroscope (RFOG) with reduced bias error from high order spatial modes

Low noise resonator fiber optic gyro

Optical filtering for resonator-fiber-optic gyroscopes

STRANDJORD LEE

Cavity length modulation in resonator fiber optic gyroscopes

Residual intensity modulation (RIM) control loop in a resonator fiber-optic gyroscope (RFOG)

WU JIANFENG

Frequency stabilized laser system