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.

Optical inertial rotation sensor using semiconductor ring laser

Abstract: A novel optical inertial rotation sensor using a semiconductor ring laser (SRL) is proposed. The Sagnac frequency shift was detected for the first time as a beat note by the terminal voltage change of an SRL without branching the circulating optical power. These results show the feasibility of very small, simple optical gyroscopes.

Nonplanar three-axis ring laser gyro with shared mirror faces

Abstract: A ring loser gyroscope for sensing rotations about three orthogonal axes. A frame includes and internal arrangement of three intersecting cavities, each of which is arranged for measuring rotation about one of the orthogonal axes. Each cavity comprises a non-planar arrangement of four cavity legs. A pair of anodes and a cathode cooperate with the intersecting cavities and, in one embodiment, with bypass tubes, whereby undesired Fresnel-Frizeau phase shifts are eliminated by gas flow effect cancellations.

Sensitivity limit of a coupled-resonator optical waveguide gyroscope with separate input/output coupling

Abstract: This paper studies a coupled-resonator optical waveguide (CROW) gyroscope consisting of identical coupled rings and coupling ratios except the input and output couplers have a different coupling ratio. Under certain circumstances this gyroscope is found to be more sensitive than the same gyroscope with all equal coupling ratios. However, its maximum achievable sensitivity does not exceed that of an optimized single-ring resonator gyroscope with the same ring radius and loss. This conclusion applies whether the CROW gyroscope is folded or unfolded, whether it utilizes one or two input/output waveguides, and regardless of the number of rings and waveguide loss.