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US20100309474 GYROSCOPE UTILIZING MEMS AND OPTICAL SENSING  
A gyroscope and a method of detecting rotation are provided. The gyroscope includes a structure configured to be driven to move about a drive axis. The structure is further configured to move...
US20120300214 GYROSCOPE UTILIZING TORSIONAL SPRINGS AND OPTICAL SENSING  
A gyroscope and a method of detecting rotation are provided. The gyroscope includes a structure configured to be driven to move about a drive axis. The structure is further configured to move...
US20140132961 FIBER OPTIC GYROSCOPE WITH FRONT END POLARIZER  
A fiber optic gyroscope (FOG) is provided. The FOG comprises a depolarizer that receives light from a light source, a multifunction integrated optic chip (MIOC) and a sensing coil coupled to...
US20110304852 SYSTEM TO REDUCE GYROSCOPIC ERRORS WITH LIMITED POWER SUPPLY QUALITY IN A FIBER OPTIC GYROSCOPE  
One embodiment is directed to a power supply for a fiber optic gyroscope that comprises at least one main power supply, at least one demodulator local power supply to operatively couple the main...
US20120229811 HIGH-LINEARITY SIGNAL-PROCESSING AMPLIFIER  
A clamp-point active circuit is provided. The clamp-point active circuit includes a rate amplifier configured to receive an output from a device transitioning between at least two levels. The...
US20080013094 SEMICONDUCTOR SUBSTRATE FOR INTERFEROMETER FIBER OPTIC GYROSCOPES  
A method for forming an interferometer is disclosed. The method involves forming a ring interferometer and a fiber optic gyroscope on a single semiconductor substrate.
US20150022819 FIBER OPTIC GYROSCOPE DEAD BAND ERROR SUPPRESSION  
Embodiments described herein provide a method of modulating an input light beam of a fiber optic coil of an IFOG. The method includes intermittently jumping the phase step of a feedback signal to...
US20110102801 DETERMINING AND COMPENSATING FOR MODULATOR DYNAMICS IN INTERFEROMETRIC FIBER-OPTIC GYROSCOPES  
Determining linear modulator dynamics in an interferometric fiber-optic gyroscope may be accomplished by applying a stimulus at a point within the gyroscope, observing a response in an output of...
US20150009505 FIBER-OPTIC MEASUREMENT DEVICE, GYROMETER, AND NAVIGATION AND INERTIAL-STABILIZATION SYSTEM  
A fiber-optic measurement device (10) includes a SAGNAC ring interferometer (20) having a proper frequency fp. The aim is to improve response time while maintaining high precision across the...
US20090201510 DETERMINING AND COMPENSATING FOR MODULATOR DYNAMICS IN INTERFEROMETRIC FIBER-OPTIC GYROSCOPES  
Determining linear modulator dynamics in an interferometric fiber-optic gyroscope may be accomplished by applying a stimulus at a point within the gyroscope, observing a response in an output of...
US20130188193 GUIDED MATTER-WAVE SAGNAC INTERFEROMETER  
The present invention provides an interferometer apparatus comprising a matter-wave guide enclosing an area, wherein a flux of particles may be guided in the matter-wave guide in at least two...
US20100231919 METHOD FOR DETERMINING LOADS ON A MECHANICAL STRUCTURE AND THE RESULTANT DAMAGE  
A method for determination of loads in a mechanical structure and/or of damage or states in the mechanical structure which result from the loads in the mechanical structure. Rotations of a part of...
US20090091763 MICROGYROSCOPE  
A new high-performance, compact microgyroscope is implemented using a microlaser such as a microsphere laser or a microdisc laser that can be easily reduced in size. The microgyroscope includes a...
US20120092676 ALL-FIBER INTERFEROMETRIC FIBER OPTIC GYROSCOPE FOR INHIBITING ZERO DRIFT  
A method for inhibiting zero drift of an all-fiber interferometric fiber optic gyroscope and a corresponding all-fiber interferometric fiber optic gyroscope are disclosed. The method comprises:...
US20100073681 BIAS-REDUCED FIBER OPTIC GYROSCOPE  
A fiber optic gyroscope includes a light source, a coupler coupled to the light source, a photodetector coupled to the coupler, an integrated optic circuit (IOC) coupled to the coupler by a first...
US20090219545 STITCHED WAVEGUIDE FOR USE IN A FIBER-OPTIC GYROSCOPE  
An integrated optical circuit includes a first waveguide portion of a first material. The first waveguide portion includes an input-port section terminating in a junction section from which first...
US20100296100 FIBER OPTIC GYROSCOPE ARRANGEMENTS AND METHODS  
This disclosure provides methods, systems and devices that may be used to measure, calculate, and orient a device such as a drill bit in a downhole environment. To that end, disclosed are fiber...
US20130088720 OPTICAL GYROSCOPE  
A microfabricated optical gyroscope that utilizes a linear array of micron scale optical ring resonators closely spaced to allow evanescent coupling of electromagnetic fields in adjacent...
US20090086212 SEMICONDUCTOR RING LASER GYRO  
A semiconductor ring laser gyro comprises: A semiconductor ring laser gyro comprises: a closed optical circuit, the closed optical circuit comprising a plurality of reflection members; a...
US20120307252 RECYCLED LIGHT INTERFEROMETRIC FIBER OPTIC GYROSCOPE  
Interferometric fiber optic gyroscope. The gyroscope includes a pulsed light source for generating light pulses and a sense coil for receiving and trapping the light pulses travelling in clockwise...
US20080291459 Fiber optic gyroscope with integrated light source  
An integrated module for a fiber optic gyroscope system includes a fiber optic sensing coil arranged to sense rotations about a sensing axis via the Sagnac effect comprises a substrate, an optical...
US20110149293 FIBER OPTIC INTERFEROMETER AND METHOD FOR DETERMINING PHYSICAL STATE PARAMETERS IN THE INTERIOR OF A FIBER COIL OF A FIBER OPTIC INTERFEROMETER  
A fiber-optic interferometer comprising an optical fiber wound to form a fiber coil into which two partial light beams of a first light source can be coupled. The Bragg structure is integrated...
US20070273889 Calibration method for optical modulator  
An aspect of the present invention features a calibration apparatus for an optical modulator comprising: a light source emitting a beam to the optical modulator; an optical scanning unit scanning...
US20140218739 INTERFEROMETER EMPLOYING A MULTI-WAVEGUIDE OPTICAL LOOP PATH AND FIBER OPTIC ROTATION RATE SENSOR EMPLOYING SAME  
An interferometer employed, in part, as a Sagnac interferometer or fiber optic gyro (FOG) includes a light source that provides a source light wave that is split into first and second light waves...
US20080024786 Fiber optic gyroscope having a silicon-based optical chip  
According to one aspect of the present invention, a fiber optic gyroscope is provided. A substrate has a silicon layer formed over an insulating layer, a waveguide formed within the silicon layer...
US20150198444 SYSTEMS AND METHODS FOR CONTROLLING THE GAS CONVERSION IN A FIBER-OPTIC GYROSCOPE  
A fiber optic sensing coil apparatus for a fiber optic gyroscope is provided. In at least one embodiment, the fiber optic sensing coil apparatus comprises a housing providing a hermetically sealed...
US20120239329 SAGNAC PHASE SHIFT TRACKING METHOD FOR FIBER-OPTIC GYROSCOPES  
A Sagnac phase shift tracking method of fiber-optic gyroscopes comprises determining, for both a current time and a previous time, a value of a primary harmonic demodulated signal and a value of a...
US20100033729 BIAS-INSTABILITY REDUCTION IN FIBER OPTIC GYROSCOPES  
A computer-implementable method of reducing bias instability in a fiber optic gyroscope includes receiving, with a computer, a first data set enabling the computer to generate a model of the...
US20130057870 SYSTEMS AND METHODS FOR RESONATOR FIBER OPTIC GYROSCOPE INTENSITY MODULATION CONTROL  
Systems and methods for improved resonator fiber optic gyroscope intensity modulation control are provided. In one embodiment, a resonant fiber optic gyroscope (RFOG) having a residual intensity...
US20110071787 STABILIZED SOLID-STATE GYROLASER  
Solid-state gyrolaser having a device for stabilizing the intensities making it possible to maintain equilibrium of the two counter-propagating modes having at least a means for calculating a...
US20120062899 BIAXIAL OPTICAL GYROSCOPE  
A biaxial optical gyroscope is provided, which realizes mode separation using the waveguide devices with different material, and the biaxial optical gyroscope includes: a surface Plasmon Polariton...
US20140168655 BROADBAND FIBER LIGHT SOURCE WITH HIGH WAVELENGTH STABILITY UNDER RADIATION FOR IFOG APPLICATIONS  
A rare-earth-doped-fiber light source with wavelength stability includes a rare-earth doped fiber and an undoped fiber placed in proximity to each other and having the same host material and the...
US20100316332 BIAS-INSTABILITY REDUCTION IN FIBER OPTIC GYROSCOPES  
Apparatus for providing Bias-Instability reduction in Fiber Optic Gyroscopes are provided. In one embodiment, an optical circuit for a fiber optic gyroscope having a broadband light source and an...
US20090046294 SAGNAC SENSOR WITH NESTED WAVEGUIDES  
Proposed optical device is based on counter-propagating optical fields within at least one nested waveguide-cavity loop, where the part of the waveguide loop is fold into the external waveguide...
US20150116722 DISPERSION MANAGED INTERFEROMETRIC FIBER OPTIC GYROSCOPE  
A dispersion managed interferometric fiber optic gyroscope comprising: a coupler coupled to the broadband light source via a first input fiber; an IOC comprising: a beamsplitter that directs the...
US20090040526 INTERFEROMETRIC FIBER OPTIC GYROSCOPE WITH OFF-FREQUENCY MODULATION SIGNALS  
Interference in a rotation rate detector signal of an interferometric fiber-optic gyroscope from a bias phase modulator signal may be reduced or substantially avoided by transmitting one or more...
US20080218764 METHODS AND SYSTEMS FOR FIBER OPTIC GYROSCOPES VIBRATION ERROR SUPPRESSION  
Systems and methods for performing vibration error suppression in a fiber optic gyro sensor. An example system includes a light source, a sensing loop assembly, a photo detector, and a processing...
US20100328673 HIGH-INDEX CONTRAST WAVEGUIDE OPTICAL GYROSCOPE HAVING SEGMENTED PATHS  
A waveguide optical gyroscope is disclosed. The waveguide optical gyroscope includes a laser, two detectors, a set of couplers and a set of waveguides. The laser generates a light beam. A first...
US20110013194 ALTERNATE MODULATION SCHEME FOR AN INTERFEROMETRIC FIBER OPTIC GYROSCOPE  
An Interferometric Fiber Optic Gyro (IFOG) device for high accuracy sensing. An example IFOG includes an integrated optics chip (IOC) and a modulation component that modulates one or more light...
US20100177317 Matter-Wave Rate Gyro Integrated onto an Atom Chip and Associated Accelerometer  
The general field of the invention is that of rate gyros, of the matter-wave type, allowing the measurement of a speed of rotation in a given direction of measurement. This type of rate gyro works...
US20140268164 Suppression of lock-in effect due to a MIOC frequency response in a fiber-optic sagnac interferometer  
A fiber-optic Sagnac interferometer in a rotation rate sensor comprises a multifunctional integrated optical chip (MIOC) with a MIOC transfer function. A digital filter is connected upstream to...
US20100301352 INTERFEROMETRIC FIBER OPTIC GYROSCOPE WITH SILICON OPTICAL BENCH FRONT-END  
Method and apparatus are provided for a silicon substrate optical system for use in an interferometric fiber optic gyroscope (IFOG). A silicon substrate of the silicon substrate optical system is...
US20080094636 Fiber gas lasers and fiber ring laser gyroscopes based on these gas lasers  
This invention discloses to a type of fiber gas lasers and fiber ring laser gyroscopes based on these fiber gas lasers. The fiber gas lasers comprise of excitation gases, optical resonator and...
US20140029011 OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH  
An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical loop having a length and a laser source...
US20100290056 Abnormality detection appraratus of optical fiber gyro  
The numbers of pulses of the CW signal and the CCW signal of the optical fiber gyro during a predetermined sampling duration are detected by samplers. An abnormality determiner determines that the...
US20120281225 OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH  
An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical waveguide having a length and a laser...
US20100238450 FIBER OPTIC GYROSCOPE USING A LOW-POLARIZATION AND POLARIZATION-MAINTAINING HYBRID LIGHT PATH  
A fiber optic gyroscope using a low-polarization and polarization-maintaining hybrid light path comprises an optical meter head and a circuit signal processing part, The optical meter head...
US20080079946 Digital intensity suppression for vibration and radiation insensitivity in a fiber optic gyroscope  
A technique for operating an interferometric fiber optic gyroscope (IFOG) exploits digital intensity suppression to improve gyro performance. The IFOG includes an optical portion configured to...
US20100238451 DEPOLARIZER FOR A FIBER OPTIC GYROSCOPE (FOG) USING HIGH BIREFRINGENCE PHOTONIC CRYSTAL FIBER  
An environmentally robust fiber depolarizer for a fiber optic gyroscope. The depolarizer includes substantially a clockwise propagating leg and a counterclockwise propagating leg, distally coupled...
US20130321817 ALL-FIBER INTERFEROMETRIC FIBER OPTIC GYROSCOPE HAVING A MINIMUM RECIPROCAL CONFIGURATION  
An all-fiber interferometric fiber optic gyroscope having a minimum reciprocal configuration is described. The gyroscope comprises a polarized light source, a light detector, a light source...

Matches 1 - 50 out of 97 1 2 >