Topic
Ring laser gyroscope
About: Ring laser gyroscope is a research topic. Over the lifetime, 2070 publications have been published within this topic receiving 18609 citations. The topic is also known as: Sagnac interferometer.
Papers published on a yearly basis
Papers
More filters
Patent•
20 Mar 1981
TL;DR: In this paper, a triaxial ring laser gyroscope with three square optical paths which are planar and orthogonal with respect to one another is presented, comprising six optical mirrors interconnected two by two by means of twelve optical path segments.
Abstract: A triaxial ring laser gyroscope with three square optical paths which are planar and orthogonal with respect to one another, this laser gyroscope comprising six optical mirrors interconnected two by two by means of twelve optical path segments (capillary channels), said segments forming an octahedron, with one mirror for each corner, each of the mirrors operating simultaneously in two orthogonal optical paths.
13 citations
TL;DR: The results support the feasibility of the theoretical analysis and experimental demonstration of phase modulation spectroscopy employing an all-fiber piezoelectric transducer modulator for a fiber ring resonator fiber-optic gyroscope.
Abstract: The theoretical analysis and experimental demonstration of phase modulation spectroscopy employing an all-fiber piezoelectric transducer modulator for a fiber ring resonator fiber-optic gyroscope is presented for the first time as far as we know. The results support the feasibility of such a technique as a rotation detection scheme for a resonator fiber-optic gyroscope.
13 citations
TL;DR: In this article, the operation of a direction-switched mode-locked fiber laser gyroscope is described and a large bias in the beat frequency output is observed, which is caused by the optical Kerr effect when the two counterpropagating pulses in the laser cavity have different optical powers.
Abstract: The operation of a direction-switched mode-locked fiber laser gyroscope is described. We observed a large bias in the beat frequency output, and found that it was caused by the optical Kerr effect when the two counterpropagating pulses in the laser cavity have different optical powers. The beat frequency bias was 65 Hz per 1 mW of power difference when the scale factor of the gyroscope was 0.43 kHz/(/spl deg//s). We found that a small amount of backscattering in the laser cavity could result in random fluctuations in the beat frequency. It is shown that the random frequency noise can be suppressed efficiently by applying push-pull phase modulation in the laser cavity.
13 citations
Patent•
26 Aug 1983
TL;DR: A ring laser gyroscope has noise reduction means which removes or compensates for errors which result when a bias or dither is imparted to the gyronscope in order to reduce or avoid lock-in this paper.
Abstract: A ring laser gyroscope has noise reduction means which removes or compensates for errors which result when a bias or dither is imparted to the gyroscope in order to reduce or avoid lock-in. In one embodiment the gyroscope has processing means (25) including two photodiodes (26,27) which are exposed to the fringe pattern of the gyroscope output beams and which, by the use of a Norton input operational amplifier (30) configured as an electronic integrator, produce a signal which is algebraically summed with the uncorrected gyroscope output signal to produce a corrected gyroscope output signal.
13 citations
Patent•
03 Apr 1985TL;DR: In this paper, an electronic dither compensator for a ring laser gyroscope uses a velocity pickoff to eliminate the need for a differentiator following a displacement pick off in order to get a rate signal.
Abstract: An electronic dither compensator for a ring laser gyroscope uses a velocity pickoff to eliminate the need for a differentiator following a displacement pick off in order to get a rate signal. The dither pickoff is converted, in a voltage to frequency converter, to a pulse train which is synchronized with the pulse train of the uncompensated input from the gyro detector. An automatic gain control with an amplitude control loop is provided. The pulses from the voltage-to-frequency converter and uncompensated inputs are synchronized and summed and differenced as selected by means of logic to produce gyro output pulses free from the effects of dither rate.
13 citations